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Oracle Database 12c Essentials

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Exam A

QUESTION 1Which statement about CDB architecture is true?

A. Oracle-supplied metadata resides only in the root container.B. A seed PDB can sometimes be opened for particular operations.C. Multiple PDBs with the same name can reside in the same CDB.D. A CDB can have an infinite number of PDBs.E. You can create common users in PDBs.

Correct Answer: ASection: (none)Explanation

Explanation/Reference:Reference:http://docs.oracle.com/cd/E16655_01/server.121/e17633/cdbovrvw.htm#CNCPT89235

QUESTION 2As part of your Oracle Database 12c post-installation tasks, you run these commands:

Cd $ORACLE_HOME/binsrvctl stop database -d myDbchopt enable dmsrvctl start database -d myDb

What does this do?

A. It enables the Oracle Data Mining option in your Oracle binary files.B. It creates the Fast Recovery Area disk group.C. It generates Client Static Library.D. It configures one of the Oracle user accounts.E. It configures Oracle Net Services.F. It configures Oracle Messaging Gateway.



Explanation/Reference:Reference: http://docs.oracle.com/cd/E16655_01/install.121/e17889/postinst.htm#RILIN1049 (see 4.4)

QUESTION 3Exhibit below:

Which three statements are true about terminating a session?

A. Without any error, you can terminate the active session by executing:SQL> ALTER SYSTEM KILL SESSION '7, 15';

B. You can terminate the active session by executing:SQL> ALTER SYSTEM KILL SESSION "7, 15';But you also get the error message:ORA-00028: your session has been killed

C. You cannot terminate the active session. You have to wait until that session becomes inactive.D. Without any error, you can terminate the inactive session by executing:

SQL> ALTER SYSTEM KILL SESSION '12, 63';E. When an inactive session is killed, the status of that session remains visible in VSSESSION with status KILLED. The rowf the terminated session is removed

from VSSESSION after the user attempts to use the session again.F. You cannot terminate the inactive session. You have to wait until that session becomes active again.

Correct Answer: BDESection: (none)Explanation

Explanation/Reference:B (not A, Not C):* You terminate a current session using the SQL statement ALTER SYSTEM KILL SESSION. The following statement terminates the session whose systemidentifier is 7 and serial number is15:* Terminating an Active Session


If a user session is processing a transaction (ACTIVE status) when you terminate the session, the transaction is rolled back and the user immediately receives thefollowing message:

ORA-00028: your session has been killed

ALTER SYSTEM KILL SESSION '7,15';

E (not F): Terminating an Inactive Session

If the session is not making a SQL call to Oracle Database (is INACTIVE) when it is terminated, the ORA-00028 message is not returned immediately. Themessage is not returned until the user subsequently attempts to use the terminated session.

When an inactive session has been terminated, the STATUS of the session in the V$SESSION view is KILLED. The row for the terminated session is removedfrom V$SESSION after the user attempts to use the session again and receives the ORA-00028 message.

Reference: Oracle Database Administrator's Guide, Terminating Sessions URL: http://docs.oracle.com/cd/B28359_01/server.111/b28310/manproc008.htm#ADMIN11192

QUESTION 4Which two statements are true about shared server sessions?


A. No Program Global Area (PGA) is allocated for shared server processes.B. User Global Area is stored in System Global Area (SGA).C. Shared SQL Area is allocated from Program Global Area (PGA).D. Private SQL Area is allocated from Library Cache.E. Large Pool is used for SQL work areas.

Correct Answer: ADSection: (none)Explanation

Explanation/Reference:


A: The PGA is memory specific to an operating process or thread that is not shared by other processes or threads on the system. Because the PGA is process-specific, it is never allocated in the SGA.

The PGA is a memory heap that contains session-dependent variables required by a dedicated or shared server process. The server process allocates memorystructures that it requires in the PGA.D: The library cache is a shared pool memory structure that stores executable SQL and PL/SQL code. This cache contains the shared SQL and PL/SQL areas andcontrol structures such as locks and library cache handles. In a shared server architecture, the library cache also contains private SQL areas.

Incorrect:Not B: The SGA is a read/write memory area that, along with the Oracle background processes, form a database instance. All server processes that execute onbehalf of users can read information in the instance SGA. Several processes write to the SGA during database operation. not C: A private SQL area (PGA) holdsinformation about a parsed SQL statement and other session-specific information for processing. When a server process executes SQL or PL/SQL code, theprocess uses the private SQL area to store bind variable values, query execution state information, and query execution work areas.

Reference: Oracle Database Concepts, 12c, Memory Architecture

QUESTION 5Which targets can be managed by using Enterprise Manager Cloud Control?

A. Hosts and databasesB. Hosts, databases, and application serversC. Application servers and web applicationsD. Databases, Oracle Management Server (OMS), and Oracle Management Repository (OMR)E. Databases, application servers, and web applicationsF. Hosts, databases, application servers, web applications, OMS, and OMR


Explanation/Reference:Reference: http://www.oracle.com/technetwork/oem/framework-infra/wp-em12c-security-best- practicesv2-1493383.pdf (page 3, second bulleted point, last coupleof sentences)

QUESTION 6Which two statements are true regarding SQL*Plus?

A. It has commands for performing database administration operations.B. It can be used in interactive but not batch mode for SQL commands.C. It has to be installed separately after the Oracle Database 12c installation.


D. Operating system commands can be executed from the SQL*Plus command prompt.

Correct Answer: ACSection: (none)Explanation

Explanation/Reference:C: how to start SQL*Plus:1- Make sure that SQL*Plus has been installed on your computer.2. Log on to the operating system (if required).3. Enter the command, SQLPLUS, and press Return.Etc.

Not B: In SQL*Plus command-line, the use of an external editor in combination with the @, @@ or START commands is an effective method of creating andexecuting generic scripts. You can write scripts which contain SQL*Plus, SQL and PL/SQL commands, which you can retrieve and edit. This is especially useful forstoring complex commands or frequently used reports.

Reference: http://docs.oracle.com/cd/B14117_01/server.101/b12170/qstart.htm

QUESTION 7Which two statements about the Process Monitor (PMON) process are true?

A. PMON performs process recovery when a client process fails.B. During instance startup, PMON takes care of instance recovery.C. PMON performs listener registration.D. PMON restarts background and dispatcher processes when they fail.E. PMON resolves failures of distributed transactions.



QUESTION 8Which statement is true about loading data by using the conventional path of SQL*Loader?

A. Redo is not generated while performing conventional path loads.B. Only PRIMARY KEY, UNIQUE KEY, and NOT NULL constraints are checked,


C. No exclusive locks are acquired when the conventional path loads are performed.D. Instead of performing transactions, SQL*Loader directly writes data blocks to the data files.E. INSERT triggers are disabled before the conventional path load and re-enabled at the end of the load.

Correct Answer: BSection: (none)Explanation

Explanation/Reference:Reference: http://docs.oracle.com/cd/A57673_01/DOC/server/doc/SUT73/ch8.htm#data %20paths (see direct loads, integrity constraints, and triggers)

QUESTION 9Identify three key properties of a transaction in Oracle Database 12c.

A. durabilityB. consistencyC. concurrencyD. isolationE. scalabilityF. manageability

Correct Answer: ABDSection: (none)Explanation

Explanation/Reference:Reference: http://docs.oracle.com/cd/E16655_01/server.121/e17633/transact.htm#CNCPT016

QUESTION 10Which type of file system is NOT valid for storing data files, online redo log files, and control files for a pluggable database?



A. Automatic Storage Management (ASM)B. OS file systemC. logical volume (LVM)D. clustered file systemE. RAW

Correct Answer: ESection: (none)Explanation


QUESTION 11Which two statements about ADDM are true?

A. Real-Time ADDM uses AWR snapshots of the last 10 minutes.B. Real-Time ADDM uses ASH recent activity from SGA data.C. Real-Time ADDM analyzes performance in a completely different fashion than regular ADDM.D. Regular ADDM uses AWR snapshots that are not yet purged.

Correct Answer: CDSection: (none)Explanation

Explanation/Reference:C: Real-Time ADDM provides an innovative way to analyze problems in unresponsive or hung databases. Using a normal and a diagnostic mode connection Real-Time ADDM runs through a set of predefined criteria to analyze the current performance and helps the DBA to resolve deadlocks, hangs, shared pool contentionsand many other exception situations that today forces the administrator to bounce their databases, causing significant loss of revenue. Real-Time ADDM is the onlytool available in the market today that can log into a hung database, analyze the problem and recommend a resolution

Note: Real-Time ADDM is an innovative way to analyze problems in extremely slow or unresponsive databases, which would have traditionally required a databaserestart. Real-Time ADDM can help resolve issues such as deadlocks, hangs, and shared pool contentions, as well as many other exception situations, withoutresorting to a restart of the database.

D: ADDM builds upon the data captured in AWR.

QUESTION 12Which two items are key for maintaining data consistency in Oracle Database 12c?


A. undo dataB. isolation levelC. lock mechanismD. serializability

Correct Answer: CSection: (none)Explanation

Explanation/Reference:Reference: http://docs.oracle.com/cd/E11882_01/server.112/e25789/consist.htm#CNCPT88969 (overview of the oracle database locking mechanism)

QUESTION 13You are about to install Oracle Database 12c Enterprise Edition. Which statement is true?

A. You should not install the Oracle Database software into an existing Oracle home from a different release.B. A multitenant container database (CDB) can have several pluggable databases (PDBs) with different character sets.C. Oracle recommends that you back up the root. sh script after you complete the installation.D. Cloning an Oracle home is useful if you are performing multiple Oracle Database Installations.E. You can stop existing Oracle processes, including the listener and the database running in the Oracle home, before the database software installation.



QUESTION 14Which logical storage relationship is correct?

A. Tablespace< Segment < Extent < Oracle DatablockB. B) Segment < Extent < Oracle Datablock<TablespaceC. Tablespace< Extent < Segment < Oracle DatablockD. Data File <Tablespace< Segment < Extent < Oracle Datablock

Correct Answer: A


Section: (none)Explanation

Explanation/Reference:Reference: http://www.dummies.com/how-to/content/basics-of-logical-structures-in-oracle- 12c.html

QUESTION 15Which two statements about multitenant architecture are true?

A. Multiple PDBs on a single server need multiple database instances and multiple sets of database files.B. Although consolidated into a single physical database, PDBs mimic the behavior of non- CDBs.C. A PDB administrator can use Oracle Flashback or point-in-time recovery to retrieve lost data from a PDB, only by shutting down all the PDBs from the CDB.D. It is easier to collect performance metrics for many databases in a CDB than individual non- CDB databases.E. It takes more time to apply a patch to one CDB that holds hundreds of PDBs than to hundreds of non-CDB databases.

Correct Answer: BDSection: (none)Explanation

Explanation/Reference:B: A PDB is a portable collection of schemas, schema objects, and nonschema objects that appears to an Oracle Net client as a non-CDB. All Oracle databasesbefore Oracle Database 12c were non-CDBs.

D: Ease of performance tuning

It is easier to collect performance metrics for a single database than for multiple databases. It is easier to size one SGA than 100 SGAs.

Reference: Benefits of the Multitenant Architecture for Database Consolidation URL: http://docs.oracle.com/cd/E16655_01/server.121/e17633/cdbovrvw.htm#CNCPT89239

QUESTION 16Which three statements represent the benefits of multitenant architecture for database consolidation?

A. You can unplug a PDB from a development CDB and plug it into a production CDB, which allows for easier and more rapid movement of data and code.B. You can consolidate shared database memory by combining multiple PDBs in a single CDB.C. Patching individual PDBs requires the same amount of time as patching individual databases.D. Consolidating separate databases into a single CDB requires the same amount of storage allocation.E. In multitenant architecture, a PDB behaves the same as a non-CDB as seen from a client connecting with Oracle Net. No client modification is required.


Correct Answer: ADESection: (none)Explanation

Explanation/Reference:A: By design, you can quickly plug a PDB into a CDB, unplug the PDB from the CDB, and then plug this PDB into a different CDB. The implementation techniquefor plugging and unplugging is similar to the transportable tablespace technique.D: The process of consolidating data from multiple databases into one database on one computer is known as database consolidation. Starting in Oracle Database12c, the Oracle Multitenant option enables you to consolidate data and code without altering existing schemas or applications.By consolidating hardware and sharing database memory and files, you reduce costs for hardware, storage, availability, and labor. For example, 100 PDBs on asingle server share one database instance and one set of database files, thereby requiring less hardware and fewer personnel.

E: A PDB is a portable collection of schemas, schema objects, and nonschema objects that appears to an Oracle Net client as a non-CDB. All Oracle databasesbefore Oracle Database 12c were non-CDBs.

Reference: Benefits of the Multitenant Architecture for Database Consolidation URL: http://docs.oracle.com/cd/E16655_01/server.121/e17633/cdbovrvw.htm#CNCPT89239

QUESTION 17Which statement about the Oracle Advanced Security Data Redaction feature is true?

A. It transparently encrypts data at rest in Oracle databases.B. It securely manages encryption keys.C. It protects against theft or loss of disks and backups.D. It prevents OS users from inspecting tablespace files.E. It limits the exposure of sensitive data in applications.F. It alters data in caches, buffers, and persistent storage.G. It impacts operational activities such as backup & restore, upgrade & patch, and replication.


Explanation/Reference:Redacting Sensitive Data for DisplayData Redaction provides selective, on-the-fly redaction of sensitive data in query results prior to display by applications so that unauthorized users cannot view thesensitive data. It enables consistent redaction of database columns across application modules accessing the same data. Data Redaction minimizes changes toapplications because it does not alter actual data in internal database buffers, caches, or storage, and it preserves the original data type and formatting whentransformed data is returned to the application. Data Redaction has no impact on database operational activities such as backup and restore, upgrade and patch,and high availability clusters.


Reference: Oracle Advanced Security, 12c, Oracle Data Sheet

QUESTION 18Which three statements about Automatic Database Diagnostic Monitor (ADDM) are true?

A. It requires the database to be open.B. It analyzes the performance of specified objects.C. It implements all recommendations automatically.D. It recommends solutions and quantifies expected benefits.E. It retains snapshots in the SYSAUX tablespace until the database is restarted.F. It analyzes the snapshots stored in the Automatic Workload Repository (AWR).

Correct Answer: BDFSection: (none)Explanation

Explanation/Reference:Reference: http://docs.oracle.com/cd/B19306_01/server.102/b14211/diagnsis.htm

QUESTION 19Which is the default port number for Database Express?

A. 7801B. 5500C. 2243D. 1521E. 22

Correct Answer: DSection: (none)Explanation

Explanation/Reference:Reference: http://docs.oracle.com/cd/B25329_01/doc/install.102/b25143.pdf (page 4, first bulleted point)

QUESTION 20Your customer is looking for a solution to address these downtime needs:- Online addition and removal of disks should automatically rebalance data across new storage configurations while storage, database, and applications remain


online.- Dynamically add or remove clustered nodes without disrupting the database or applications.- Automate the sizing and distribution of shared memory.- Add a column with a default value without disrupting the database or applications.- Perform rolling patch upgrades.

Which four would you recommend to address those needs?

A. Automatic Storage Management (ASM)B. Online Data and Application changeC. Global Data Services (GDS)D. Real Application Clusters (RAC)E. Oracle StreamsF. Online Table RedefinitionG. Oracle Database Vault

Correct Answer: ACDESection: (none)Explanation


QUESTION 21Your database instance is down because there was a user-initiated shutdown. Which option represents the actions performed, in the correct order, if you start upthe instance?


a - The control file is read.b - Memory is allocated.c - Background processes pre started.d -The initialization parameter file is read,e- Redo log files and data files are opened.


A. b, c, aB. d, a, eC. a, e, d, bD. d, b, c, a, eE. c, b, d, a, e


Explanation/Reference:answer is corrected.

QUESTION 22Which three components are always part of System Global Area?

A. Database Buffer CacheB. Undo Log BufferC. Shared PoolD. Small PoolE. Java PoolF. Private SQL Area

Correct Answer: ACESection: (none)Explanation

Explanation/Reference:Reference: http://docs.oracle.com/cd/E11882_01/server.112/e40540/memory.htm#CNCPT802

QUESTION 23Which two statements about Database Express are true?

A. It uses internal infrastructure components, such as XDB and SQL*Net.B. It can perform actions outside the database.C. It has background tasks and processes that periodically collect information via FTP.D. It has two new features: Performance Hub and Composite Active Reports.E. It is not supported on Standard Edition (SE) and Express Edition (XE).



Explanation/Reference:Reference: http://www.oracle.com/technetwork/database/manageability/emx-intro-1970113.html

QUESTION 24Which three operations can the PUBLIC user with the SYSOPER privilege perform?

A. STARTUPB. SHUTDOWNC. CREATE DATABASED. DROP DATABASEE. ALTER DATABASE RECOVER

Correct Answer: ABESection: (none)Explanation

Explanation/Reference:Reference: http://docs.oracle.com/cd/B28359_01/server.111/b28310/dba006.htm#ADMIN11049

QUESTION 25To revoke unnecessary and unused privileges, you can use Privilege Analysis. Which sequence should you follow?

1 -Start the analysis.2 - Set up the analysis policy type (database, role, context).3 - Generate the results.4 -View the results in DBA_USED_PRIVSand DBA_UNUSED_PRJVS.5 - Stop the analysis.

A. 1, 2, 3, 4, 5B. 2, 1, 5, 3, 4C. 5, 1, 2, 3, 4D. 2, 3, I, 5, 4E. 1, 2, 4, 5, 2




QUESTION 26Which command do you use to create a local role while you are connected as the local user?

A. create local role l_hr;B. create role c##_hr container=current;C. create role l_hr container=current;D. create role l_hr container=all;


Explanation/Reference:You can include CONTAINER=CURRENT in the CREATE ROLE statement to specify the role as a local role.

Reference: Oracle Database Security Guide , Creating a Local Role

QUESTION 27YOU want to move all objects of the CONSULTANT user from the test database to theDB- USER schema of the production database. Which option of IMPDPwould you use to accomplish this task?

A. FULLB. SCHEMASC. TRANSFORMD. REMAP_SCHEMAE. REMAP_TABLESPACE




QUESTION 28For which database operation do you need the database to be in MOUNT state?

A. renaming the control filesB. re-creating the control filesC. dropping a user in your databaseD. dropping a tablespace in your databaseE. configuring the database instance to operate in ARCHIVELOG or NOARCHIVELOG mode


Explanation/Reference:To enable or disable archiving, the database must be mounted but not open.

Note: See step 5 below.Changing the Database Archiving Mode

To change the archiving mode of the database, use the ALTER DATABASE statement with the ARCHIVELOG or NOARCHIVELOG clause. To change thearchiving mode, you must be connected to the database with administrator privileges (AS SYSDBA).

The following steps switch the database archiving mode from NOARCHIVELOG to ARCHIVELOG:

1.Shut down the database instance2.Back up the database.3.Edit the initialization parameter file to include the initialization parameters that specify the destinations for the archived redo log files4.Start a new instance and mount, but do not open, the database.

STARTUP MOUNTTo enable or disable archiving, the database must be mounted but not open.

5.Change the database archiving mode. Then open the database for normal operations.ALTER DATABASE ARCHIVELOG;ALTER DATABASE OPEN;

6.Shut down the database.SHUTDOWN IMMEDIATE


7.Back up the database.

QUESTION 29Examine the table:

Table name: PRODUCTSSchema: SCOTTTablespace: USERSOrganization: Standard (Heap Organized)

This table contains 20 rows. In the data that has been entered, the PROD_ID column contains only single-digit values, PROD_NAME has a maximum of fivecharacters, and PROD_RATE has four-digit values for all rows.

Which two statements are true regarding the modifications that can be performed to the structure of the PRODUCTS table?

A. PROD_NAME size can be increased from five to 10 characters.B. PROD_ID can be changed from CHAR to NUMBER data type.C. PROD_RATE size can be changed from NUMBER(4) to NUMBER(6, 2).D. New columns can be added only if they have a NOT NULL constraint.E. None of the existing columns can be dropped because they contain data.



QUESTION 30A DBA informs you that an Oracle instance has started. What does this imply?

A. Users can access the data in the database.B. Only SGA has been allocated for the database.C. Only background and user processes are running.D. Memory areas have been allocated and background processes have been started.



Explanation/Reference:answer is verified.

QUESTION 31Real-Time ADDM detects a high-load performance issue within the database. Which condition triggered it?

A. The average active sessions were more than three times the number of CPU cores.B. Active sessions were more than 10% of total load and CPU utilization was more than 50%.C. Memory allocations were more than 95% of physical memory.D. Hung sessions were more than 10% of total sessions.E. A deadlock was detected.F. The session limit was close to 100%.


Explanation/Reference:Reference:http://docs.oracle.com/cd/E16655_01/server.121/e15857/pfgrf_diag.htm#TGDBA95369 (table 7-1)

QUESTION 32Which command do you use to check for block corruption by validating the database?

A. RMAN> VALIDATE CHECK LOGICALB. RMAN> VALIDATE BACKUPC. RMAN> VALIDATE CORRUPT BLOCKSD. RMAN> VALIDATE DATABASE


Explanation/Reference:since 11g the syntax got changed toRMAN> validate [check logical] database;

Example:


DGMGRL> validate database verbose d1

output include:Block Corruptions found NO NO

QUESTION 33Which tool is recommended for moving a PDB to a non-CDB?


A. RMANB. Cold BackupC. Traditional Export / ImportD. Data PumpE. SQL*Plus


Explanation/Reference:Creating a PDB by Plugging an Unplugged PDB into a CDB

An unplugged PDB consists of an XML file that describes the PDB and the PDB's files (such as the data files and wallet file). You can use the CREATEPLUGGABLE DATABASE statement to plug in an unplugged PDB. To do so, you must include a USING clause that specifies the XML file that describes the PDB.

The source CDB is the CDB from which the PDB was unplugged. The target CDB is the CDB into which you are plugging the PDB. The source CDB and targetCDB can be the same CDB or different CDBs.

QUESTION 34Which two statements describe data dictionary views?

A. They are stored in the SYSTEM tablespace.B. They are based on virtual tables.


C. They are owned by the SYS user.D. They speed up query and data manipulation language (DML) operations.E. The VSFIXED_TABLEview can be queried to list the names of these views.

Correct Answer: DESection: (none)Explanation


QUESTION 35

Which two statements about this policy are true?

A. It replaces the first four digits of the value from the SALARY column with the number 9.B. It replaces the first digit of the value from the SALARY column with the number 4.C. It replaces the first digit of the value from the COMMISSION_PCTcolumn with 9.D. It replaces the first nine digits of the value from the COMMISSION_PCTcolumn with 1.E. It uses the full data redaction method.


F. It uses the random redaction method.

Correct Answer: DFSection: (none)Explanation


QUESTION 36Which option represents a function of Global Data Services (GDS)?

A. performs data replicationB. performs database failoversC. replaces the functionality of Oracle Clusterware and Oracle RACD. coordinates site failoversE. works seamlessly with Oracle Site Guard

Correct Answer: ABSection: (none)Explanation


QUESTION 37Which two statements represent where Oracle Net must reside?

A. Only on the client for traditional client/server applicationsB. Only on the database server for web-based applicationsC. On both the web server and database server for web-based applicationsD. On both the client and database server for traditional client/server applications.




QUESTION 38When you start up a CDB, which operations are performed automatically and in what order?

a - The instance is started.b - Control files are opened.c - The root container is opened (redo logs and root data files).d - Seed pluggable database is in READ ONLY mode.e - Other PDBs are still in MOUNTED mode.f - Triggers may fire if they exist to open other PDBs.

A. a, b, c, d, e, fB. b, c, a, d, e, fC. c, b, a, d, f, eD. a, b, c, dE. b, c, a, d



QUESTION 39Which new process was introduced as of Oracle Database 12c?

A. Result Cache Background process (RCBG)B. AQ Coordinator process (QMNC)C. Change Tracking Writer process (CTWR)D. Listener Registration process (LREG)


Explanation/Reference:Reference: http://musingdba.wordpress.com/2013/07/05/new-in-oracle-database-12c-a/


QUESTION 40

Which two statements are true about this common user?

A. SQL> conn c##usr/pwd@pdb1You are connected to PDB1 successfully.

B. SQL> conn c##usr/pwd@pdb2You are connected to PDB2 successfully.

C. SQL> conn c##usr/pwd@pdb2You are unable to create a connection. You first need to sync PDB2 by executing:SQL> conn / as sysdbaSQL>exec DBMS_PDB.SYNC_PDB;

D. SQL> conn c##usr/pwd@pdb2You are unable to create a connection. You need to create the common user c# #usr explicitly in PDB2 by executing:SQL>conn system/pwd@pdb2SQL> CREATE USER c##usrIDENTIFIED BYpwd CONTAINER=CURRENT; Now you are able to connect as common user c##usr to PDB2.




QUESTION 41Which two statements are true regarding undo data records?

A. They are required to support Flashback features.B. They are not required if Flashback features are enabled.C. They are retained until the session making the changes ends.D. Undo records contain copies of data as it appears after a change is made.E. Undo records contain copies of data as it appears before a change is made.

Correct Answer: AESection: (none)Explanation

Explanation/Reference:Reference: http://docs.oracle.com/cd/E11882_01/server.112/e25494/undo.htm#ADMIN11463

QUESTION 42Your customer has two CDBs: one for Production and one for development. You are asked to create a new development PDB (salesdev) from an existingproduction PDB (salesprd). Which two options would accomplish this?

A. You copy all the PDBSSEEDdata files from the production CDB into the development CDB and execute this on the development CDB;SQL> CREATE PLUGGABLE DATABASE salesdev ADMIN USER salesdm IDENTIFIED by password;

B. You alter the salesprd source database to open in read-only mode, and start cloning the source database:SQL> ALTER PLUGGABLE DATABASE salesprd OPEN READ ONLY; SQL> CREATE PLUGGABLE DATABASE salesdev FROM salesprd;

C. You alter the salesprd source database to open in read-only mode:SQL> ALTER PLUGGABLE DATABASE salesprd OPEN READ ONLY; In the development CDB, you create a databaselink "PRD" that connects to the root ofthe source CDB, and start cloning the source PDB:SQL> CREATE PLUGGABLE DATABASE salesdevFROM salesprd@prd;

D. Connected as the salesprd local DBA, you create an XML using:SQL> ALTER PLUGGABLE DATABASE salespdb UNPLUG INTO ' /tmp/salesprd-xml' ; Copy the XML file and all salesprd-related files to the target CDB andstart plugging the copy into the development CDB using:SQL> CREATE PLUGGABLE DATABASE salesdev USING' /tmp/salesprd.xml';


Explanation/Reference:A: Creating a PDB Using the Seed


You can use the CREATE PLUGGABLE DATABASE statement to create a PDB in a CDB using the files of the seed.

D: Plugging In an Unplugged PDBTo plug in an unplugged PDB, the following prerequisites must be met:* Complete the prerequisites described in "Preparing for PDBs".* The XML file that describes the PDB must exist in a location that is accessible to the CDB.The USING clause must specify the XML file.Etc

QUESTION 43Your database is down. You log in as the SYS user and issue this command:SQL> STARTUP

What happens after the instance is started?

A. Nothing else happens.B. The database is mounted but not opened.C. The database is mounted and finally opened.D. The database is opened and finally mounted.


Explanation/Reference:Reference: http://docs.oracle.com/cd/E17781_01/server.112/e18804/startup.htm

QUESTION 44Which option represents the steps to add a multiplexed copy of the current control file or to rename a control file in Oracle Database 12c?

a - Shut down the database.b - Restart the database.c - Copy an existing control file to a new location by using operating system commands. d - Edit the CONTROL_FILESparameter in the database initializationparameter file to add the new control file name, or to change the existingcontrol file name.

A. b, c, dB. a, c, d, bC. a, d, b, cD. c, d, b



Explanation/Reference:Reference: http://docs.oracle.com/cd/E16655_01/server.121/e17636/control.htm#ADMIN11287

QUESTION 45Your database is open and the listener is running. The DBA stops the listener by using the command:

LSNRCTL> STOP

What happens to the sessions that are currently connected to the database instance?

A. They can perform only queries.B. They are not affected and continue to function normally.C. They are terminated and the active transactions are rolled back.D. They are not allowed to perform any operations till the listener is started.


Explanation/Reference:Note: Oracle Net Listener is a separate process that runs on the database server. It receives incoming client connection requests and manages the traffic of theserequests to the database server.

QUESTION 46Your customer wants all email addresses from the database displayed as [hidden]@company.com. What method of data redaction must you use?

A. full redactionB. partial redactionC. regular expressionsD. random redactionE. no redaction




QUESTION 47Your customer is looking for a solution that meets these four needs:


1 - Replicate data from source to target for reporting purposes. 2 -Replicate data from one source to multiple targets. 3 - Replicate data between two databases forinstant failover. 4 - Replicate data from multiple sources to a single target for a data warehouse.

Which GoldenGate-supported topology would you recommended?

A. Uni-directional for 1Peer-to-peer for 2Bi-directional for 3Consolidation for 4

B. Peer-to-peer for 1Broadcast for 2Bi-directional for 3Consolidation for 4

C. Uni-directional for 1Broadcast for 2Bi-directional for 3Consolidation for 4

D. Peer-to-peer for 1Consolidation for 2Broadcast for 3Cascading for 4




QUESTION 48You execute some DMLcommands, followed by a COMMIT Statement. Which option correctly describes how the logwriter (LGWR) process takes part in thetransaction commit?

A. 1. LGWR writes the commit record to disk.2. LGWR writes all redo entries from Redo Log Buffer to disk.

B. 1. GWR writes only the transaction's redo entries from Redo Log Buffer to disk.2. LGWR writes the commit record to disk.

C. 1. LGWR puts the commit record to Redo Log Buffer.2. IGWR writes all redo entries from Redo Log Buffer to disk.

D. 1. LGWR puts the commit record to Redo Log Buffer.2. If the activity is high, LGWR waits three seconds for other transactions to commit.3. LGWR writes all redo log entries from Redo Log Buffer to disk.

E. 1. LGWR puts the commit record to Redo Log Buffer.2. LGWR signals the database writer (DBW) process to write dirty blocks to disk.3. LGWR writes all redo entries from Redo Log Buffer to disk.



QUESTION 49Which two statements about PDBs and CDBs are true?

A. There is only one SYSTEM tablespace per CDB.B. There is only one instance per PDB.C. There is a set of redo log files per PDB.D. There is only one UNDO tablespace per CDB.E. There is one SYSAUXtablespace per PDB.




QUESTION 50You went to create a new CDB foe your customer. Which two statements are true about the seed pluggable database that will reside in the new CDB?

A. You have to copy the seed data files yourself,B. You can use the new SEED FILE_NAME_CONVERTclause in the CREATE DATABASE statement.C. The seed pluggable database is not required.D. The seed pluggable database does not require data files.E. The seed pluggable database is always kept in READ ONLY mode.F. The seed pluggable database is not a container.G. The seed pluggable database can be dropped.

Correct Answer: BGSection: (none)Explanation

Explanation/Reference:answer is valid.

QUESTION 51You want to clone PDB1 and PDB2 into the same CDB. Which statement is correct?

A. You cannot do this, because you can only clone PDBs into another CDB.B. You can clone only one PDB (either PDB1 or PDB2) into the same CDB.C. Cloning a PDB can use the source files copy method to the target PDB files.D. Cloning a PDB can use the NOCOPY clause if the target PDB files use the source files.



QUESTION 52Consider 10 scenarios that result in database downtime. Which five of them are considered as planned downtime?


A. addition or removal of nodes, memory, or disksB. changing configuration parameters, upgrading, or patching Oracle softwareC. file deletionD. migrating to cluster architectureE. dropped database objectF. table definition changesG. runaway processes that consume system resourcesH. adding table partitioningI. operating system or storage device / driver failureJ. database or application deadlocks

Correct Answer: ADHIJSection: (none)Explanation

Explanation/Reference:Answer: A, D, H, I, J

QUESTION 53What happens if you execute these SQL statements?

SQL> show con_name

CON_NAME--------------------------------CDB$ROOT

SQL> create user 1_freed identified by y container=current;

A. A common user is created in the root container.B. A local user is created in the root container.C. A local user is created in all the PDBs.D. The second SQL statement fails because a local user cannot be created in the root container.




QUESTION 54A standby database is in mounted state and you are required to perform a failover to the physical standby. Which solution is best suited forthis scenario?

A. ALTER DATABASE RECOVER MANAGED STANDBY DATABASE statement with the FINISH keywordB. ALTER DATABASE PREPARE TO SWITCHOVER and ALTER DATABASE COMMIT TO SWITCHOVER statementsC. ALTER DATABASE RECOVER TO STANDBY DATABASE statement with the FINISH keywordD. D) ALTER DATABASE PREPARE SWITCHOVER and ALTER DATABASE COMMIT TO SWITCHOVER Statements



QUESTION 55Which two statements are true about transactions in Oracle Database 12c?

A. Multiple transactions can use the same undo segment.B. A transaction is assigned an undo segment when it is started.C. Multiple transactions cannot share the same extent in an undo tablespace.D. If all the segments in an undo tablespace are used, transactions use system undo segments to store undo data.



QUESTION 56Which two statements about Data Recovery Advisor are true?

A. Data Recovery Advisor can be used to diagnose and repair data corruptions in non-CDBs.B. Data Recovery Advisor cannot be used to diagnose and repair data corruptions in the root of a CDB.


C. Data Recovery Advisor can be used to diagnose and repair data corruptions in PDBs.D. You can use the ADVISE FAILURE command to display repair options after running LIST FAILURE in an RMAN session.


Explanation/Reference:A (not B): In the current release, Data Recovery Advisor can only be used to diagnose and repair data corruptions in non-CDBs and the root of a multitenantcontainer database (CDB). Not C: Data Recovery Advisor is not supported for pluggable databases (PDBs).

D: A failure is detected either automatically by the database or through a manual check such as the VALIDATE command. You can use the LIST FAILUREcommand to view problem statements for failures and the effect of these failures on database operations. Each failure is uniquely identified by a failure number. Inthe same RMAN session, you can then use the ADVISE FAILURE command to view repair options, which typically include both automated and manual options.

Reference: Oracle Database Backup and Recovery User's Guide, 12c, Diagnosing and Repairing Failures with Data Recovery Advisor

QUESTION 57Which two statements about multitenant architecture are true?

A. It ensures full backward compatibility with non-CDBs.B. It fully operates with RAC.C. It is integrated with Enterprise Manager, but not with the Resource Manager.D. It allows central management and administration of single databases.



QUESTION 58You are installing OracleDatabase 12c on a machine. When you run the installer; Oracle Universal installer (OUI) shows a message that says one of the product-specific prerequisite checks has failed:

Checking available swap space requirements...Expected result: 1512MBActual Result: 1018MBCheck complete. The overall result of this check is: failed «« Problem: The system does not have the required swap space.


What happens to the installation in this situation?

A. It can be continued.B. It resizes the swap space automatically when you proceed further.C. It can be continued, but the instance cannot be started without increasing swap space.D. It shows a message saying one or more prerequisite checks have failed and the installation aborts.


Explanation/Reference:Reference: https://bugs.kde.org/show_bug.cgi?id=111460

QUESTION 59Examine the command below:

LSNRCTL> SERVICES LISTENER2Connecting to (DESCRIPTION=(ADDRESS= (PROTOCOL=TCP) (HOST=estb. us. abc.com) (PORT=1525)))Services Summary. . .Service "orcl.oracle.com" has 1 instance(s).Instance "oracle", status UNKNOWN, has 1 handler(s) for this service... Handler(s):"DEDICATED" established:2 refused:0 LOCAL SERVER The command completed successfully

Which two statements are true about LISTENER2?

A. The ORCL instance is registered dynamically with the listener.B. The ORCL instance is registered statically in the listener.ora file.C. The number of current client connections handled by the service handler is two.D. The total number of client connections handled so far by the service handler is two.



QUESTION 60Which three statements are true about a database instance that has mounted a database but has not opened it?



A. System administrators and users with the CREATE SESSION system privilege may connect to the instance.B. Data files are open in read-only mode.C. A control file is open.D. System Global Area (SGA) is allocated and background processes are started.E. An alert log and trace files are open.F. Instance recovery is performed for the database.



QUESTION 61View the current parameter settings shown in the output below.

NAMETYPEVALUEdb_file_multiblock_read_count integer 107ddl_lock_timeout integer 60Distributed_lock_timeout integer 60dml_locks integer 748lock_sga boolean FALSEenab1e_dd1_1ogging boolean FALSEresumable_timeout integer 0

A user logs in to the HRschema and issues the following commands:

SQL> CREATE TABLE emp


(empno NUMBER(3),enamo VARCHAR2(20),sal NUMBER (8, 2));

SQL> INSERT INTO emp (empno, ename) VALUES(1, 'JAMES');

At this moment, a second user also logs in to the HRschema and issues the following command:

SQL> ALTER TABLE emp MODIFY salNUMBER(10, 2);

What happens in this scenario?

A. The second user's session immediately produces a "resource busy" error.B. The second user's command executes successfully.C. The second user's session waits for a time before producing a "resource busy" error.D. A deadlock is created.



QUESTION 62Your customer wants to migrate their production database from Oracle Database 10gon AIX to Oracle Database 12con Solaris, and is concerned about thedowntime. Which Oracle solution would you recommend?

A. Active Data GuardB. Oracle GoldenGateC. Oracle Real Application ClustersD. Oracle Transportable TablespacesE. Oracle Cloud Platform as a Service




QUESTION 63An Oracle instance is a combination of______.

A. database files and parameter file (initialization parameter file or server parameter file)B. System Global Area (SGA) and background processesC. a listener process, server processes, and background processesD. System Global Area (SGA), server processes, and background processesE. database files, System Global Area (SGA), and background processes


Explanation/Reference:Reference: http://docs.oracle.com/cd/A57673_01/DOC/server/doc/SCN73/ch9.htm#o instance

QUESTION 64You have two database servers EMP and EXP. A user of the database from the EXP server wants to extract some information from the database in the EMPserver for cross-verification. Which schema object enables the user to access the information from the remote database?

A. clusterB. database linkC. mapping tableD. materialized view


Explanation/Reference:Reference: http://docs.oracle.com/cd/B19306_01/server.102/b14200/statements_5005.htm

QUESTION 65Which two are client-side components of Oracle Data Guard Broker?

A. Oracle Enterprise Manager Cloud ControlB. Oracle Data Guard monitor


C. Oracle Data Guard command-line interface (DGMGRL)D. Oracle Data Guard Broker Manager


Explanation/Reference:Reference: http://books.google.com.pk/books?id=qK-biQrYzAUC&pg=PA55&lpg=PA55&dq=client-side+components+of+Oracle+Data+Guard+Broker&source=bl&ots=hHTjqx70n7&sig=1SkypkiGuUR1uPpy0QLGFPqy4mw&hl=en&sa=X&ei=qsT7Us7VDMWN7Aa-vYCgCg&ved=0CEQQ6AEwAw#v=onepage&q=client-side%20components%20of%20Oracle %20Data%20Guard%20Broker&f=false

QUESTION 66Your customer needs server availability that provides uninterrupted access to database services, handling any unexpected failure of one or more machines hostingthe database server, due to a hardware or software fault. Which product should your customer use?

A. Oracle Data GuardB. Oracle StreamsC. Oracle Real Application ClustersD. Oracle GoldenGate


Explanation/Reference:Reference: http://www.oracle.com/technetwork/database/availability/maximum-availability-wp- 12c-1896116.pdf (page 5, Server HA: Oracle Real ApplicationClusters)

QUESTION 67Your customer has three data centers in three different locations, location A has their production database running on Oracle Database 12c. They want to replicatethe data from location A to location B. which is 50 miles away and is used for disaster protection and database rolling upgrades. They also want to create a replicadatabase at location C, which must be open in read- write mode, while synchronizing with the primary database. Which two solutions would you recommend to yourcustomer?

A. Oracle GoldenGateB. Oracle Advanced Replication


C. Oracle Active Data GuardD. Oracle Streams



QUESTION 68Your database instance is running. db01 is a net service name. You issue a connection request by using the command:

SQL> CONNECT scott/tiger@db01

Which component receives the request and establishes the appropriate connection?

A. listenerB. user processC. service nameD. server process


Explanation/Reference:Reference: http://docs.oracle.com/cd/E11882_01/network.112/e41945/trouble.htm#NETAG394

QUESTION 69Which statement about Online Move Data file is true?

A. Moving a data file online prevents DML operations on segments stored in the data file.B. Flashing back a database to a point in time before a data file had been renamed online retains the new name.C. Moving a data file online can be performed if the data file is in OFFLINE mode.D. Moving a data file online cannot be performed if the data file is under BEGIN BACKUP.

Correct Answer: ASection: (none)


Explanation


QUESTION 70You execute the following command:SQL> ALTER USER skd ACCOUNT LOCK;

Which two statements are correct?

A. The SKD user cannot log in to the database instance.B. The objects owned by the SKD user are not accessible to any user.C. Other users can access objects owned by the SKD user, to which they have access.D. The SKD user's password expires and the user is forced to change the password at the next login.



QUESTION 71Examine the statements:SQL> CREATE TABLESPACE MYTBS DATAFILE '/disk1/mytbs_l.dbf ' SIZE 10M;

SQL> CREATE TABLE mytab (id NUMBER, descr VARCHAR2 (100) ) PARTITION BY RANGE(id) (partition pi values loss than (100000) tablespacemytbs storage (initial lm), partition p2 values less than (MAXVALUE) tablespacemytbs storage (initial 1m) );

When inserting data, you get the error:ORA-01688: unable to extend table SYS.MYTAB partition P2 by 128 in tablespace MYTBS

Which three operations would allow you to insert data without getting the error message?

A. Extend the logical volume by 10 MB where the data files are stored; # lvextend -L+10M /disklB. Add a data file:

SQL>ALTER TABLESPACE MYTBS ADD DATAFILE ' /disk1/mytbs_2 .dbf SIZE 10M;C. Move a partition to another tablespace:

SQL> CREATE TABLESPACE ADDITIONAL_TBS DATAFILE '/disk1/additional_tbs_1 .dbf' SIZE 10M;


SQL> ALTER TABLE MYTAB MOVE PARTITION P2 TABLESPACE ADDlTIONAL_TBS;D. Resize the existing data file:

SQL> ALTER DATABASE DATAFILE '/diskl/mytbs_l .dbf' RESIZE 20M; E) Remove a data file:SQL> ALTER TABLESPACE MYTBS DROP DATAFILE '/diskl/mytbs_l - dbf';

Correct Answer: BCDSection: (none)Explanation


QUESTION 72Which two statements about Automatic Data Optimization (ADO) are true?

A. ADO policies can automatically compress data when it qualifies.B. ADO policies can automatically move segments when necessary.C. ADO is not dependent on Heat Map, and works even if Heat Map is disabled.D. You cannot compress at block level, but you can compress at segment level.E. You can compress at row level only for QUERY LOW.



QUESTION 73Which statement about Oracle patches is false?



A. Interim patches, also known as "one-off" patches, are created to provide a specific fix between the releases of patch sets.B. Security Patch Update (SPU) is the primary means of releasing security fixes for Oracle products. SPUs are cumulative with respect to prior SPUs and

generally contain only security fixes.C. Patch Set Update (PSU) is a collection of proactive, stabilizing, cumulative patches for a particular product version (base release or patch set). PSUs are

cumulative and include all the security fixes from CPU patches, plus additional fixes.D. Patch Set is the main way in which Oracle provides bug fixes in between releases. Oracle bundles a number of fixes, tests them thoroughly together, and

packages, then together for easy download and installation.E. Terminal Patch Set is an unsupported patch set by Oracle Lifetime Support policies.


Explanation/Reference:Starting with Oracle Database version 12.1.0.1, Oracle only provides Patch Set Updates (PSU) to meet the Critical Patch Update (CPU) program requirements forsecurity patching. Security Patch Updates (SPU) will no longer be available.

QUESTION 74Which three statements represent the difference between a container database (CDB)and a non- container database?

A. A container database has exactly one seed PDB, and a non-container database has no seed PDB.B. In a newly created non-CDB that does not yet contain user data, the data dictionary contains only system metadata. When application users create their own

objects, this metadata is mixed with the system metadata. In a CDB, the data dictionary metadata is split between the root and the PDBs. The data dictionary inthe PDB contains pointers to the data dictionary in the root.

C. New views are introduced. Next to DBA_views, AIL_-views, and USER_-views, there are CDB_-views. Both CDB and non-CDB databases can access thisinformation.

D. You are allowed to create only a single HR user in a non-CDB database. This restriction is identical for a CDB database.E. Every PDB in a CDB has its own control file. A non-CDB, which has no containers, needs only one control file.



QUESTION 75The session of user SCOTT receives the following error after executing an UPDATE command on the EMP table:


ERROR at line 1:ORA-00060: deadlock detected while waiting for resource

You find out that a session opened by user JIM has a transaction that caused the deadlock. Which two statements are true about SCOTT's session in thisscenario?

A. The session is terminated after receiving the error and JIM can continue with his transaction.B. SCOTT should perform a COMMIT or ROLLBACK to allow JIM to continue with his transaction.C. The session is rolled back after receiving the error and JIM can continue with his transaction.D. SCOTT has to re-execute the last command in the transaction after he commits the transaction.



QUESTION 76Examine the command:SQL> CREATE TABLE orders(oid NUMBER (6) PRIMARY KEY, odato DATE, ccode NUMBER (6), oamt NUMBER (10, 2)) TABLESPACE users ;

Which two statements are true about the execution of the command?

A. A CHECK constraint is created on the OID column.B. A NOT NULL constraint is created on the OID column.C. The ORDERS table is the only object created in the USERS tablespace.D. The ORDERS table and a unique index are created in the USERS tablespace.E. The ORDERS table is created in the USERS tablespace and a unique index is created on the OID column in the SYSTEM tablespace.


Explanation/Reference:B: A NOT NULL constraint is put on the primary key.D:* To enable a unique or primary key constraint, you must have the privileges necessary to create an index on the table. You need these privileges because OracleDatabase creates an index on the columns of the unique or primary key in the schema containing the table.


* TABLESPACE Specify the tablespace in which Oracle Database creates the table, object table OIDINDEX, partition, LOB data segment, LOB index segment, orindex-organized table overflow data segment. If you omit TABLESPACE, then the database creates that item in the default tablespace of the owner of the schemacontaining the table.

Reference: Oracle Database SQL Language Reference 12c , CREATE TABLE

QUESTION 77Which three options correctly match environment variables with their specific functionality?

A. ORACLE_SID specifies the instance name.B. ORACLE_SID specifies the global database name.C. ORACLE_BASE specifies the root of the Oracle Database directory tree in all platforms.D. ORACLE_BASE specifies the root of the Oracle Database directory tree only in UNIX and Linux platforms.E. ORACLE_HOME specifies the directory containing the Oracle software executables and network files.F. ORACLE_HOME specifies the directory containing only the Oracle software executables, but not the network files.

Correct Answer: ACESection: (none)Explanation

Explanation/Reference:answer is valid and updated.

QUESTION 78Identify the correct order of consolidation density.

A. multitenant< schema consolidation< dedicated database< VMsB. schema consolidation< VMs< dedicated databases< multitenantC. dedicated databases< VMs< schema consolidation< multitenantD. VMs< dedicated databases< schema consolidation< multitenant



QUESTION 79


Examine the commands:SQL> CONNECT sys@CDBl AS SYSDBA$QL>STARTUP MOUNTSQL> ALTER DATABASE cdbl MOUNT;

Which four options represent what happens when these commands are executed?

A. The instance is started.B. The CDB control files are opened for the instance.C. The root is mounted.D. The root is opened.E. The PDBs are mounted.F. The PDBs are mounted, and the seed is opened in READ ONLY mode.G. The PDBs are mounted, and opened in READ WRITE mode, while the seed is opened In READ ONLY mode.

Correct Answer: ABCFSection: (none)Explanation


QUESTION 80Which two statements about switchover and failover are true?

A. A snapshot standby can be the target of a switchover or fast-start failover operation.B. Neither a switchover nor a failover is possible to a far sync instance.C. For fast-start failover, you must preselect the target standby database that will be used.D. You can activate a standby database to test whether it is being updated correctly.

Correct Answer: BCSection: (none)Explanation

Explanation/Reference:Reference: http://docs.oracle.com/cd/E16655_01/server.121/e17641/sofo.htm#DGBKR3404 http://docs.oracle.com/cd/E11882_01/server.112/e17023/sofo.htm#DGBKR3310

QUESTION 81


Identify three types of important statistics collection that you can disable in Oracle Database 12c by setting the STATISTIS_LEVEL parameter to BASIC.

A. Oracle Database alert.log fileB. object-level statisticsC. Automatic SGA Memory ManagementD. Oracle Database Trace filesE. all server-generated alerts

Correct Answer: BCESection: (none)Explanation


QUESTION 82You need to recover a database running In NOARCHIVELOG mode. Which two statements are true in this scenario?

A. You can perform complete recovery by using the command:RESTORE DATABASEFROM TAG"consistent_whole_backup";RECOVER DATABASE;

B. You can perform incomplete recovery by using the command:RESTORE DATABASE;FROM TAG "consistent_whole_backup";RECOVER DATABASE NOREDO;

C. Only consistent backups can be used for restoring a database in NOARCHIVELOG mode.D. Media recovery is possible in most cases.


Explanation/Reference:Reference:http://docs.oracle.com/cd/B19306_01/backup.102/b14191/rcmrecov.htm#CACGEAEE

QUESTION 83Which statement about a server parameter file (SPFILE) is false?


A. An SPFILE is a binary file that cannot be edited by using a text editor.B. You can create an SPFILE from an existing text initialization parameter file or from memory.C. You can use the SHOW PARAMETERS command to display the values of initialization parameters in an SPFILE.D. The instance first searches for an SPFILE named spfileoRACLE_SID.ora and, if this is not found. It searches for spfile.ora.


Explanation/Reference:Not A, not B: SPFILE is a text file that can be created from a file or from scratch.Not C: This shows database was started by spfile

SQL> show parameter spfile;

NAME TYPE VALUE---- ---- ---------------------------------------------------------- spfile string /root/apps/oracle/10g/dbs/spfile<DB_NAME>.ora No values returned means its started by pfile.

QUESTION 84Which statement about the Queryable Patch inventory feature is false?

A. It is used to retrieve installed patch information from a SQL prompt.B. It uses the PREPROCESSOR feature, which allows users to preprocess input data before it is sent to the access drivers.C. DBMS_QOPATCH provides a PL/SQL or SQL interface to view the database patches installed.D. It works in an Oracle database instance that is mounted. Therefore, it works in ASM instances and DG instances.


Explanation/Reference:* New in Oracle 12c is queryable Opatch. Oracle offers a set of tables and a PL/SQL packages to query the Oracle Inventory.Prior to Oracle 12c, it was not easy toList Oracle patches. Now from Oracle 12c and beyond, you can use the DBMS_QOPATCH package to list all patches.

* Using DBMS_QOPATCH feature, users can do:Query what patches are installed from SQL*Plus.Write wrapper programs to create reports and do validation checks across multiple environments. Check patches installed on Oracle RAC nodes from a singlelocation instead of having to log onto each one in turn.


QUESTION 85

A. Option AB. Option BC. Option CD. Option DE. Option E

Correct Answer: BCDSection: (none)Explanation


QUESTION 86


Identify two types of solutions in which you would need to use Active Data Guard and Golden Gate together.

A. a solution that provides zero-data-loss protection at any distance without impacting database performanceB. a solution for disaster protection and database rolling upgrades for a mission-critical OLTP database, where you also want to extract data from a data guard

primary database for ETL update o' an enterprise data warehouseC. a solution requiring minimal planned downtime and risk, using standby first patching, database rolling upgrades, and select platform migrationsD. a solution that helps with integrated automatic database and client failover between source and target, where you also need to establish advanced replication

(such as multi master and bidirectional replication and data transformations)


Explanation/Reference:Reference: http://www.oracle.com/technetwork/database/availability/active-data-guard-wp-12c- 1896127.pdf (page 16, last two bulleted points)

QUESTION 87You create a CDB with four containers: the loot, the seed, and two pluggable databases PDB1 and PDB2. Which four items can reside In PDB1, but not in theroot?


A. shared UNDO and default database temporary tablespaceB. Oracle-supplied metadataC. shared Oracle-supplied dataD. CDB views providing information across PDBsE. application tablespacesF. local temporary tablespacesG. local users and local rolesH. non-shared local metadata

Correct Answer: EFGH




QUESTION 88Which two statements are true when you execute an invoker's rights procedure?

A. The owner must have the INHERIT PRIVILEGES object privilege on the invoking user, or the INHERIT ANY PRIVILEGES privilege.B. Invoking users can control who can access their privileges when they run an invoker's rights procedure.C. The calling user must be granted the INHERIT PRIVILEGES object privilege on the user owner of the procedure.D. The calling user must grant the INHERIT PRIVILEGES object privilege on the user owner of the procedure.


Explanation/Reference:Reference: http://docs.oracle.com/cd/E16655_01/network.121/e17607/dr_ir.htm#DBSEG661

QUESTION 89Which parameter can be changed by explicitly re-creating the control file or by using the DBNEWID utility?

A. db_nameB. maxdatafilesC. control_filesD. instance_name


Explanation/Reference:Reference: http://docs.oracle.com/cd/B10501_01/server.920/a96652/ch14.htm

QUESTION 90Several tables are accidentally deleted from a PDB. Which database would you immediately connect to, and as which user, to recover these tables?


A. the CDB as the ROOT userB. the CDB as the CDBADMIN userC. the PDB as the ROOT userD. the PDB as the PDB Admin user



QUESTION 91Identify two solutions that Oracle provides for patch conflict.

A. merge patchB. combine patchC. overlay patchD. dual patchE. super patch



QUESTION 92You are in the middle of transaction, updating a table. The machine on which the database is running reboots because of a power outage. This causes a databaseinstance failure.Which statement is true in this situation?

A. The online redo log files and archived redo log files are required to accomplish a recovery.B. The uncommitted transaction is committed at the next startup of the database instance.C. The uncommitted transaction is rolled back automatically at the next opening of the database.D. The DBA has to perform a recovery on the database to recover the uncommitted transaction.




QUESTION 93Which three options best describe Patch Set Updates (PSUs) in Oracle Database 12c?

A. non-cumulativeB. multi-versionC. proactiveD. stabilizingE. cumulative

Correct Answer: CDESection: (none)Explanation


QUESTION 94For which use case would you use a rolling upgrade with the Oracle Active Data Guard feature?

A. when upgrading from Oracle Database 12c to the first patch set of Oracle Database 12cB. when upgrading from Oracle Database 10g to Oracle Database 12cC. when upgrading from Oracle Database 11g to Oracle Database 12cD. when upgrading from any previous version of Oracle Database to Oracle Database 12c


Explanation/Reference:You will be able to use this feature to perform database version upgrades starting with the first patchset of Oracle Database 12c (that is, you cannot use it toupgrade from any version earlier than the first Oracle Database 12c patchset). This means that the manual Transient Logical Standby upgrade procedure must stillbe used when upgrading from Oracle Database 11g to Oracle Database12c, or when upgrading from the initial Oracle Database 12c release to the first patchset of


Oracle Database 12c.

Reference: Oracle Data Guard Concepts and Administration, 12c, Using DBMS_ROLLING to Perform a Rolling Upgrade

QUESTION 95Which two statements about multi section backup are true?

A. It is available only for full backups.B. It supports incremental backups and image copies.C. Backup for each data file is divided into sections and is backed up in parallel. However, for image copies, sections are backed up sequentially.D. For image copies, sections are backed up in parallel and recomposed at the end.


Explanation/Reference:B (Not A): Starting with Oracle Database 12c Release 1 (12.1), RMAN supports multisection incremental backupsD (not C): Starting with Oracle Database 12c Release 1 (12.1), you can create multisection full backups that are stored as image copies. While the image copy isbeing created, multiple channels are used to write files sections. However, the output of this operation is one copy for each data file.

Reference: Specifying Multisection Incremental Backups Making Multisection Backups Using Image Copies

QUESTION 96Which tablespace contains the data dictionary, being automatically created at database creation?

A. USERSB. TEMPC. SYSAUXD. SYSTEME. EXAMPLE


Explanation/Reference:Reference: http://docs.oracle.com/cd/B10500_01/server.920/a96524/c04space.htm


QUESTION 97Which three tasks can you perform in Database Express?

A. View performance and status information about the database instance.B. Start up the database.C. Shut down the database.D. Create database structures.E. Manage users and security.



QUESTION 98Which two statements are true about the B-tree Index?

A. The leaf blocks in the index are doubly linked.B. The leaf node stores a bitmap for each key value.C. Rows with a NULL value in key columns also have entries in the Index.D. The deletion of a row from the table causes a logical deletion in the index leaf block and the space becomes available for a new leaf entry.


Explanation/Reference:Reference: http://www.siue.edu/~dbock/cmis565/module12-indexes.htm

QUESTION 99Which two statements are true about listeners?

A. Listeners use only the TCP/IP protocol.B. Multiple listener processes can run simultaneously on a host.C. Multiple database instances can be registered with a single listener,D. Listener-related errors can be traced only at the administrative level.


E. Only one database instance can be registered with a single listener at any time.

Correct Answer: BESection: (none)Explanation

Explanation/Reference:B: A network may contain multiple local and remote listeners.

E: Oracle Net Listener is a separate process that runs on the database server. It receives incoming client connection requests and manages the traffic of theserequests to the database server.

Incorrect:Not A: Because the configuration parameters have default values, it is possible to start and use a listener with no configuration. This default listener has a name ofLISTENER, supports no services on startup, and listens on the following TCP/IP protocol address:

(ADDRESS=(PROTOCOL=tcp)(HOST=host_name)(PORT=1521))

QUESTION 100You want to start a global service on your database. Which three conditions must be met?

A. The database is open and registered with a global service manager.B. The service has been disabled on that database.C. The database role is different from the role attribute of the service.D. The replication lag on the database does not exceed the maximum value specified for the service.E. The service has reached its cardinality defined by the number of preferred databases.F. No other database in the pool is a better candidate for starting the service.


Explanation/Reference:A: To provide global services, a database must be added to a Global Data Services pool. The valid node checking for registration (VNCR) feature provides theability to configure and dynamically update a set of IP addresses, host names, or subnets from which registration requests are allowed by the global servicemanager. Database instance registration with a global service manager succeeds only when the request originates from a valid node.

* Starting a Global Service

The gdsctl start service command is used to start an existing service on the Global Data Services pool databases.


GDSCTL>start service -service emp_report1 -gdspool hr If the -role parameter is specified for the service, the service only starts on the databases in which the rolematches the specified value (not C). If the -lag parameter is specified for the service, the service only starts on the databases for which replication lag does notexceed the specified value (D). Unless -preferred_all is specified for the service, the service only starts on the databases that are listed as preferred for the service.

QUESTION 101What must you do to an application for it to take advantage of partitioning?


A. recompile itB. rewrite its SQL queriesC. relinkD. rework the applications schemaE. nothing; it is transparent


Explanation/Reference:Reference: http://docs.oracle.com/cd/B19306_01/server.102/b14220/partconc.htm

QUESTION 102Which three statements about common and local roles are true?

A. When a role is granted to a user, the privileges in the role are limited to the context of the PDB.B. Local roles can be granted only to local users.C. Common roles can be granted to both local and common users.D. A user can create common roles if the user has the CREATE ROLE privilege, and SET CONTAINER for all PDBsE. Common roles can be created in the root and PDBs.

Correct Answer: ACD




QUESTION 103Which statement regarding Oracle Active Data Guard 12c is false?

A. Any application compatible with a read-only database can run on an Oracle Active Data Guard standby.B. It provides new support for DML to global temporary tables and the use of sequences in the standby database.C. It repairs block corruptions detected in the primary or standby database.D. It supports different software patch levels between a primary database and its physical standby database for the purpose of applying and validating Oracle

patches in a rolling fashion.E. It supports multi master and bidirectional replication architectures where there are multiple databases that all contain the same data, even if they are not

synchronized.



QUESTION 104Examine the command:sqlplus /nolog

In which scenario would this command execute successfully?

A. only from the server, if the database instance is not upB. from either a client or server, even if the database instance is not upC. from either a client or server, only if the database instance is up, and the command connects the session to the instanceD. from either a client or server, only if the database instance is up, but the command does not connect the session to the instance




QUESTION 105John is a CDB administrator, and Mike and Tim are PDB administrators of their respective databases- John takes a complete CDB backup by usingRMAN>Backup Database. Mike and Tim may need point-in-time recovery of their PDBs. Which statement is true?

A. Recovery of individual PDBs is not possible, because John did not back up by using RMAN>Backup Pluggable database pdb1 pdb2. However, complete CDBrecovery is still possible.

B. Mike and Tim need to individually take backups of their respective PDBs, because CDB-level backup does not include PDB data dictionary objects.C. Mike and Tim do not need to worry, because recovery of individual PDBs is possible.D. Recovery of individual PDBs is not possible at all.



QUESTION 106In this SQL statement, what is the partitioning criteria?

CREATE TABLE books_partPARTITION BY RANGE (cell_id) (PARTITION p0l VALUES LESS THAN (2),PARTITION p02 VALUES LESS THAN (3) ,. . .PARTITION pl4 VALUES LESS THAN (15),PARTITION pl5 VALUES LESS THAN (16),PARTITION pl6 VALUES LESS THAN (MAXVALUE))AS SELECT * FROM books;

A. booksB. pxxC. MAXVALUED. cell_idE. There is no partitioning criteria.




QUESTION 107Which four statements about users in Oracle Database 12c are correct?

A. A common user cannot have the same name as any local user across all PDBs.B. A common user can be created only in the root container.C. A local user with the proper privileges can also create a common user.D. If a PDB is closed, the common and local users of the PDB are not visible.E. A common user with the proper privileges can create a common user by using the CONTAINER=CURRENT clause.F. A common user is one that has the same username and authentication credentials across multiple PDBs.

Correct Answer: ABEFSection: (none)Explanation


QUESTION 108Which three DBA operations can be performed by using Oracle SQL Developer?

A. database backup and recovery using RMANB. performance tuning operations such as generation of AWR, ADDM, and ASH reportsC. storage configuration for archive logs and control filesD. storage configuration for data files and redo log groupsE. database status view and Data Pump export and import jobs


Explanation/Reference:A: 1.11.5 RMAN Backup/Recovery


Includes options related to database backup and recovery.

B: 1.17.4 ASH and AWR reportsThe ASH and AWR reports list information provided by the Active Session History (ASH) and Automated Workload Repository (AWR) features

E:1.11.3 Database StatusIncludes options for displaying status information about the database.

1.11.4 Data PumpIncludes options for using the Oracle Data Pump Export and Import utilities

Reference: Using DBA Features in SQL DeveloperURL: http://docs.oracle.com/cd/E35137_01/appdev.32/e35117/intro.htm#CEGDIAEC

QUESTION 109Consider an application in which memory required for each session is 400 KB and memory required for each server process is 4 MB. The pool size is 100 and thenumber of shared servers used is 100. If there are 5000 client connections, what is the amount of memory used by a dedicated server?

A. 615 MBB. 2.5 GBC. 4 GBD. 12 GBE. 22 GB



QUESTION 110When executing shutdown abort in a pluggable database (PDB), you ____________.

A. shut down abort the CDBB. shut down abort the PDBC. shut down immediate the PDBD. shut down immediate the CDB




QUESTION 111Which is the default isolation level in Oracle Database 12c?

A. serializableB. read-onlyC. read committedD. read uncommitted


Explanation/Reference:Reference: http://docs.oracle.com/cd/B28359_01/server.111/b28318/consist.htm#CNCPT1312 (see the sentence that comes right after table 13-1)

QUESTION 112Your customer is planning for a maximum-availability architecture at their data center to address their planned downtime, unplanned downtime, and replicationneeds.

Consider these options:- Instance, site recovery, and heterogeneous setup- Inter-region and intra-region load balancing across replicated databases- Fine-grained error investigation of incorrect results- Integrated client and application failover- Fastest and simplest database replication

Which four options would you recommend?

A. Oracle GoldenGateB. Global Data ServicesC. Oracle Data GuardD. Data Recovery Advisor


E. Oracle Flashback technologyF. Oracle Advanced Queuing

Correct Answer: ABCESection: (none)Explanation

Explanation/Reference:Reference:http://docs.oracle.com/cd/E16655_01/server.121/e17601/unplanned.htm#HAOVW11824

QUESTION 113Which two statements are true about Oracle Data Pump?

A. EXPDP and IMPDP are the client components of Oracle Data Pump.B. DBMS_DATAPUMP PL/SQL packages can be used independently of Data Pump clients.C. Oracle Data Pump export and import operations can be performed only by users with the SYSDBA privilege.D. Oracle Data Pump imports can be done from the export files generated in Original Export Release 9.x.E. EXPDP and IMPDP use the procedures provided by DBMS_METADATA to execute export and import commands.


Explanation/Reference:Reference: http://docs.oracle.com/cd/B19306_01/server.102/b14215/dp_overview.htm

QUESTION 114Which two statements correctly distinguish between undo and redo data?

A. Undo reverses a change, whereas redo re-creates a change.B. Redo reverses a change, whereas undo re-creates a change.C. Undo protects against inconsistent reads, whereas redo protects against data loss.D. Redo protects against inconsistent reads, whereas undo protects against data loss.




QUESTION 115After a ___________ statement is issued, a transaction ends. (select three)

A. COMMITB. ROLLBACKC. SAVEPOINTD. SELECTE. CREATE


Explanation/Reference:A transaction ends when any of the following actions occurs:

* (AB) A user issues a COMMIT or ROLLBACK statement without a SAVEPOINT clause.

* (E) A user runs a DDL command such as CREATE, DROP, RENAME, or ALTER.

Etc.

Reference: Oracle Database Concepts, 12c, End of a Transaction

QUESTION 116Which statement about Storage Snapshot Optimization is correct?

A. It enables you to use third-party technologies to take a storage snapshot of your database without putting the database in BACKUP mode. You can then use thesnapshot to recover all or part of the database.

B. It enables you to use RMAN to take a storage snapshot of your database. The database must be in BACKUP mode. You can then use the snapshot to recoverall or part of the database.

C. It enables you to use RMAN to take a storage snapshot of your database. The database doesn't have to be in BACKUP mode. You can then use the snapshotto recover all or part of the database.

D. It enables you to use third-party technologies to take a storage snapshot of your database. The database must be in BACKUP mode. You can then use thesnapshot to recover all or part of the database.

Correct Answer: A



Explanation/Reference:Reference:http://docs.oracle.com/cd/E16655_01/backup.121/e17630/release_changes.htm#BRADV276 (new features, third bullet)

QUESTION 117There are two listeners, LISTENER1 arid LISTENER2, and one service name ORCL available for your database. The database is running and currently, onlyLISIENER1 is started. You issue the command:

lsnrctl start listener2

What would be the outcome?

A. It starts the second listener without affecting current sessions.B. It starts the second listener and terminates all current sessions.C. It gives an error because multiple listeners cannot run simultaneously.D. It gives an error because multiple listeners can run simultaneously only if there are multiple net service names.


Explanation/Reference:Reference: https://blogs.oracle.com/rtsai/entry/how_to_configure_multiple_oracle

QUESTION 118You add the following code in the tnsnames.ora file on a client PC:sales=(DESCRIPTION=(ADDRESS= (PROTOCOL=TCP)(HOST=salesdata) (PORT=1521) ) (CONNECT_DATA=(SERVICE_NAME=sales.acme)))

Which statement is true about the code with respect to creating a new connect identifier?

A. It is created for the SALES database in the network domain ACME on the SALESDATA server.B. It is created for the SALESDATA database on the SALES server in the network domain called ACME.C. It generates an error because the connect identifier name cannot be a part of SERVICE_NAME.D. It generates an error because the server configuration mode (dedicated or shared) is not specified.



Explanation/Reference:* Example, Basic Format of tnsnames.ora File

net_service_name=(DESCRIPTION=(ADDRESS=(protocol_address_information))(CONNECT_DATA=(SERVICE_NAME=service_name)))

* This tnsnames.ora file is a configuration file that contains net service names mapped to connect descriptors for the local naming method, or net service namesmapped to listener protocol addresses.

A net service name is an alias mapped to a database network address contained in a connect descriptor. A connect descriptor contains the location of the listenerthrough a protocol address and the service name of the database to which to connect. Clients and database servers (that are clients of other database servers) usethe net service name when making a connection with an application.

Reference: Oracle Database Net Services Reference

QUESTION 119Which three statements are true about database storage structures?

A. A data file can span across tablespaces.B. An extent contains one or more segments.C. Tablespaces contain one or more data files.D. Data objects are stored as segments in tablespaces.E. Segments can span across data files within a tablespace.

Correct Answer: CDESection: (none)Explanation

Explanation/Reference:Not B: Segments contain extents.

QUESTION 120You are about to apply a patch to a database. Which recommended action is incorrect?


A. You should check the patch conflict with installed patches before applying the patch.B. You should make sure that you have a good backup of the software, database, and configuration files.C. You should install the latest O patch before applying the patch.D. You should check the fifth digit of the release information to confirm that the Patch Set Update (PSU) is applied successfully.E. You should stop all applications running from the software directory that is being patched.



QUESTION 121Which type of information is included in dynamic performance views?

1 - System and session parameters2 - Memory usage and allocation3 - File states (including RMAN backup files)4 - Progress of jobs and tasks5 - SQL execution6 - Statistics and metrics

A. 3, 4, and 5B. 1, 2, 5, and 6C. 1, 2, 3, and 4D. 2, 3, 5, and 6E. 2, 3, 4, 5, and 6F. 1, 2, 3, 4, 5, and 6

Correct Answer: FSection: (none)Explanation

Explanation/Reference:Reference: http://docs.oracle.com/cd/E16655_01/server.121/e17633/datadict.htm#CNCPT1213 (overview of dynamic performance views)

QUESTION 122


Which three statements are true about System Global Area (SGA)?

A. SGA contains shared memory structures for all Oracle processes running on a single server.B. Each server process has its own SGA.C. SGA is allocated automatically when a database is started.D. SGA is used to speed up queries by caching data blocks, program data, information about database objects, and query resultsE. SGA is allocated automatically when a database is mounted.F. SGA is read and written by server and background processes.

Correct Answer: CDFSection: (none)Explanation


QUESTION 123Why does performance degrade when many UPDATE, INSERT, or DELETEstatements are issued on a table that has an associated bitmap index?

A. The DML operations re-create the bitmap index blocks.B. The bitmap index is rebuilt automatically after a DML operation.C. The smallest amount of a bitmap that can be locked is a bitmap segment.D. Additional time is taken to remove NULL values from the bitmap index alter a DML operation.


Explanation/Reference:Bitmap indexes in currently "supported" versions of Oracle are maintained in a much more efficient manner than they were previously, to the point where the needfor frequently rebuilds has been much reduced, even in tables in which such indexes are not dropped during heavy loads.

That said, Bitmap indexes are still unsuitable in OLTP type environments (even in 11g or later) due to the locking implications associated with them.

Note: bitmap indexes are only suitable for static tables and materialized views which are updated at nigh and rebuilt after batch row loading.Not B: Like b-tree indexes, bitmap indexes should be rebuilt (ALTER INDEX . . . REBUILD) if there is a lot of DML (UPDATE, INSERT, DELETE) activity.

Not A: Since 10g, Oracle is significantly more efficient and where possible will simply adjust the current rowid range of the Bitmap index entry and modify thebitmap string accordingly to accommodate a new row value (resulting in an overall increase of just 2 bytes overall in this example) rather than create a totally new


index entry (which required an additional 21 bytes in the 9i example).

QUESTION 124Which two options can you use to list Oracle Database 12c patches by using Queryable Patch Inventory?

A. select patch from vSoption where opatch_data=' 333333' ;B. select xmltransform(dbms_qopatch.get_opatch_data(3333333), dbms_qopatch.GET_OPATCH_XSLT()) from dualC. select opatch from vSpatchsets where opatch_number = '333333';D. opatchlsinventory -xml


Explanation/Reference:Reference:http://www.oracle.com/technetwork/pt/articles/sql/queryable-patch-inventory-12c- 2098576-ptb.html

QUESTION 125What new role in Oracle Database 12c encompasses the administrative privileges required for backup and recovery?


A. SYSBKPB. SYSBKPRMANC. SYSRMAND. SYSBACKUP


Explanation/Reference:Reference:


http://docs.oracle.com/cd/E16655_01/backup.121/e17631/release_changes.htm#RCMRF90521 (sys backup privilege)

QUESTION 126Which statement is true about Enhanced Real-Time ADDM in Oracle Database 12c?

A. The analyzed result is lost when the database instance is restarted.B. It runs every 1 hour automatically.C. It is shipped only with Oracle Enterprise Manager 12c.D. It analyzes high CPU trend and identifies problems before they can threaten application performance.



QUESTION 127Examine the error:GSM-45054: GSM error or NET-40006: unable to start GSH What is the cause of this error, and what troubleshooting steps should you perform?

A. The GDS catalog database of its listener may be down. Verify that the GDS catalog database and its local listener are running.B. The GDS pool database may be down. Make sure that the GDS pool databases are up and the service is enabled and started.C. The GDS pool database's local listener may be down. Make sure that it is running.D. The global service may be down. Verify that the pool databases are up and the service is started.E. The global service may be disabled. Make sure that the pool databases are up and the service is enabled and started.



QUESTION 128Which three events signal a database writer (DWR) to write buffers to disk?

A. The database advances a checkpoint.B. A client process commits a transaction.


C. The redo log buffer becomes full.D. A server process cannot find non-dirty blocks after scanning a threshold number of buffers.E. A tablespace is changed to read-only status.F. The database is shut down in immediate mode.


Explanation/Reference:AE: When tablespace is changed to read only status it will issue a Partial checkpoint. During db shutdown a checkpoint is also issued. DWR writes when there is acheckpoint.

QUESTION 129Which three background processes are mandatory in a database Instance started with a minimally configured Initialization parameter file?

A. Process Monitor Process (PMON)B. Flashback Data Archive process (FBDA)C. Space Management Coordinator process (SMCO)D. Recoverer process (RECO)E. Listener Registration process (LREG)


Explanation/Reference:The mandatory background processes are present in all typical database configurations. These processes run by default in a database instance started with aminimally configured initialization parameter file.

The following are the mandatory background processes:(A) Process Monitor Process (PMON)(D) Recoverer Process (RECO)(E) Listener Registration Process (LREG)System Monitor Process (SMON)Database Writer Process (DBW)Log Writer Process (LGWR)Checkpoint Process (CKPT)Manageability Monitor Processes (MMON and MMNL)


Note: The mandatory processes are not the same release 11.

Reference: Oracle Database Concepts 12c, Mandatory Background Processes http://docs.oracle.com/database/121/CNCPT/process.htm#CNCPT008

QUESTION 130Oracle Database 12c provides new task-specific privileges (SYSBACKUP, SYSDG, and SYSKM) to handle standard administration duties. Which two statementsabout these standard administration privileges are true?

A. These administrative privileges enable you to connect to the database only if the database is open.B. After connecting with these privileges, you are connected under a predefined user whose name is the privilege name.C. These administrative privileges allow a user to view DBA_xxx, GV$, VS, and SELECT on application tables.D. Without being a member of OSBACKUP. OSDG, and OSKM OS groups, users cannot connect as administrative users by using OS authentication.



QUESTION 131Examine the output:

SQL> SELECT index_name, status FROM dba_indexes WHEREstatus='UNUSABLE'; INDEX_NAME STATUS--------------------- -----------------EIND UNUSABLE

Which two statements about this index are true?

A. It is ignored by the query optimizer.B. It is not used while the index is being rebuilt.C. The index cannot be rebuilt, and has to be re-created.D. The index is automatically rebuilt when used the next time.


Explanation/Reference:* Oracle indexes can go into a UNUSABLE state after maintenance operation on the table or if the index is marked as 'unusable' with an ALTER INDEX command.


A direct path load against a table or partition will also leave its indexes unusable. Queries and other operations agains a table with unuable indexes will generateerrors:ORA-01502: index `string.string' or partition of such index is in unusable state* The following SQL will print out a list of alter commands that can be executed to fix unusable indexes:Indexes:SELECT 'alter index '||index_name||' rebuild tablespace '||tablespace_name ||';' FROM dba_indexesWHERE status = 'UNUSABLE';

QUESTION 132All database users are currently connected to the database instance and are working. The HR user opens three database sessions and executes this command inone of the sessions:

SQL> UPDATE persons SET ccode='U031' WHERE ccode='U029'; 123 rows updated.

SQL> DELETE FROM persons WHERE exp='Y';3 rows deleted.

The SYS user opens a new session after HR executes the preceding commands. Which option represents the sessions that can see the effect of the UPDATE andDELETE commands?

A. all sessions of the HR userB. all sessions of the HR user and the SYS userC. the session of the HR user that executed the commandsD. all sessions for which database users have access privileges to the PERSONS table


Explanation/Reference:Without issue of commit by the HR user, the other users are unable to see the changes even though they have access.

QUESTION 133Which three statements about replication options are true?

A. The Oracle Streams information flow consists of three components: capture, redo transfer, arid consumption.B. Oracle Streams is deprecated in Oracle Database 12c Release 1.C. Oracle Database Advanced Replication is deprecated in Oracle Database 12c Release 1, including multimaster replication, updatable materialized views,

multitier materialized views, and deployment templates.D. Oracle Database Advanced Queuing is independent of Oracle Streams.


E. The Oracle GoldenGate software architecture is composed of three primary components:capture, propagate, and trail files.

Correct Answer: BCESection: (none)Explanation


QUESTION 134Identify three outcomes of using the Oracle Multitenant option in Oracle Database 12c.

A. less instance overheadB. increased storage costC. minor application changesD. fast and easy provisioningE. same time needed for patching and upgrade as in the previous releaseF. isolation



QUESTION 135Which statement is true regarding this connect string?

(DESCRIPTION(FAILOVER=on)(ADDRESS_LIST=(LOAD_BALANCE=ON)(ADDRESS=(host=sales-east1) (port=1522) )(ADDRESS=(host=sales-east2)(port=1522))(ADDRESS=(host=sales-east3) (port=1522) ))(ADDRESS_LIST=(LOAD_BALANCE=ON)(ADDRESS=(host=sales-west1) (port=1522) )


(ADDRESS=(host=sales-west2) (port=JS22))(ADDRESS=(host=sales-west3) (port=lS22) ) )(CONNECT_DATA=(SERVICE_NAME=sales)(REGION=east)))

A. It contains three global service managers in the client's local region (east).B. Client-side load balancing has been enabled only for the global service managers within the client's buddy (west).C. Connect-time failover between regions has not been enabled.D. The REGION parameter is optional.



QUESTION 136You connect to a database instance and execute a DML command that changes one data block. The block is read from the buffer cache, modified, and modified,and marked as dirty. You commit the transaction. What must take place before the block can be written to disk?

A. The buffer must be written to flash cache.B. A log writer (LGWR) must write all redo entries that have been copied into the buffer since the last time it wrote.C. The modified data block must be moved from the LRU list to the write queue.D. The database must advance the checkpoint.



QUESTION 137In Oracle Database 12c, when does a transaction begin?

A. when a transaction ID is allocated for it.B. when a user explicitly issues a "begin" statement


C. when a transaction is assigned to an available undo data segment to record undo entries for the new transactionD. when the first executable SQL statement is encountered


Explanation/Reference:A transaction begins when the first executable SQL statement is encountered. An executable SQL statement is a SQL statement that generates calls to a databaseinstance, including DML and DDL statements and the SET TRANSACTION statement.

QUESTION 138Your customer is looking for zero-data-loss failover with maximum data protection and high availability for their primary database. Which two solutions would yourecommend to the customer if the distance between the primary and the standby location is more than 300 miles?

A. Asynchronous redo transport with Data GuardB. Synchronous redo transport with Data GuardC. Active Data Guard Far SyncD. Data Guard SQL Apply


Explanation/Reference:B: The synchronous redo transport mode transmits redo data synchronously with respect to transaction commitment. A transaction cannot commit until all redogenerated by that transaction has been successfully sent to every enabled redo transport destination that uses the synchronous redo transport mode.Note that although there is no limit on the distance between a primary database and a SYNC redo transport destination, transaction commit latency increases asnetwork latency increases between a primary database and a SYNC redo transport destination.

C: An Oracle Data Guard far sync instance is a remote Oracle Data Guard destination that accepts redo from the primary database and then ships that redo toother members of the Oracle Data Guard configuration. A far sync instance manages a control file, receives redo into standby redo logs (SRLs), and archives thoseSRLs to local archived redo logs, but that is where the similarity with standbys ends. A far sync instance does not have user data files, cannot be opened foraccess, cannot run redo apply, and can never function in the primary role or be converted to any type of standby database.

Far sync instances are part of the Oracle Active Data Guard Far Sync feature, which requires an Oracle Active Data Guard license.

Reference:

QUESTION 139


Which database feature can be used for organizing data when there is a very large amount of data?

A. IndexB. PartitioningC. TriggersD. Row-level securityE. Database vault


Explanation/Reference:Reference: http://docs.oracle.com/cd/B28359_01/server.111/b28318/intro.htm#CNCPT999 (see very large databases)

QUESTION 140Which four items exist in the root of a CDB, but not in the PDBs?

A. shared UNDO and default database temporary tablespaceB. Oracle-supplied metadataC. shared Oracle-supplied dataD. CDB views providing information across PDBsE. application tablespacesF. local temporary tablespacesG. local users and local rolesH. non-shared local metadata

Correct Answer: ABCDSection: (none)Explanation


QUESTION 141Examine the command below:BEGIN DBMS_REDACT.ADD_POLICY(object_schema => 'mavis',


object_name => 'cust_info',column_name => 'emp_id',policy_name => 'redact_cust_ids',function_type => DBMS_REDACT.REGEXP,expression => '1=1',regexp_pattern => '(\d\d\d)(\d\d)(\d\d\d\d)',regexp_replace_string => 'XXXXX\3',regexp_position => 1,regexp_occurrence => 0,regexp_match_parameter => 'i',policy_description => 'Redacts customer IDs',column_description => 'emp_id contains employee ID numbers'); END;/

What do the regexp_pattern and regexp_replace_string parameters accomplish?

A. They find a pattern of nine digits; break the digits into three groups that contain the first three, the next two and then the last four digits; and replace all digitswith XXXXX concatenated with the last four digits.

B. They find a pattern of six digits; break the digits into two groups that contain the first five, and then the last digit; and replace all digits with XXXXX concatenatedwith the last digit.

C. They find a pattern of nine digits and display the digits as XXXXX XX XXXX.D. They find a pattern of nine digits and display the first five digits as XXXXX and the last four digits as 3333.



QUESTION 142Which normalization level is adopted in real-world database systems?

A. 1NFB. 2NFC. 3NFD. BCNF

Correct Answer: ASection: (none)


Explanation


QUESTION 143What happens when you execute these SQL statements?

ALTER SYSTEM SET SGA_TARGET = 992M;ALTER SYSTEM SET SHARED_POOL_SIZE = 0;ALTER SYSTEM SET LARGE_POOL_SIZE = 0;ALTER SYSTEM SET JAVA_POOL_SIZE = 0;ALTER SYSTEM SET DB_CACHE_SIZE = 0;ALTER SYSTEM SET STREAMS POOL SIZE = 0;

A. The database stops (shutdown abort).B. B) The database Stops (shutdown immediate).C. You activate Automatic Shared Memory Management.D. You get an error message.


Explanation/Reference:Reference: http://www.orafaq.com/forum/t/67825/0/ (see the second post)

QUESTION 144Which two statements about Global Data Services (GDS) are correct?

A. GDS allows scaling replication-aware application workloads beyond the cluster (that is, across replicated clusters).B. GDS helps in performing data replication.C. GDS works seamlessly with any combination of Oracle RAC databases, single-instance databases, Oracle Data Guard, Oracle Active Data Guard, and Oracle

Golden Gate.D. GDS helps to perform database failovers, and does not require Data Guard Broker.E. The GDSMGRL utility is a command-line interface for configuring and managing the Global Data Services framework.

Correct Answer: ACSection: (none)


Explanation

Explanation/Reference:Reference: http://www.oracle.com/technetwork/database/availability/global-data-services-12c- wp-1964780.pdf (page 8)

QUESTION 145Which three are initialization parameters for backup and recovery?

A. CLONEDBB. FILESYSTEMIO_OPTIONSC. DB_CREATE_FILE_DESTD. RECYCLEBINE. TAPE_ASYNCH_IO


Explanation/Reference:answer is modified.

QUESTION 146In which situation would you use static database registration for a listener?

A. when multiple databases are to be registered with the listenerB. when DBAs need to connect remotely to start up the database instanceC. when users need to connect the database instance by using the host naming methodD. when the database instance to be registered with the listener is configured in shared server mode



QUESTION 147YOUR database crashes after a user accidentally kills a background process. What are three possible ways to restart your database?


A. S sqlplus / as sysdbaSQL> restart;

B. S sqlplus / as sysdbaSQL> startup immediate;

C. S rman target /RMAN> Startup

D. S sqlplus / as sysdbaSQL> startup open recover;

E. S srvctl start database -db SORACLE_SID


Explanation/Reference:C: The following command starts an instance, reads the initialization parameters from the default location, and then mounts and opens the database. (You canoptionally specify a PFILE clause.)

STARTUPD: If you know that media recovery is required, you can start an instance, mount a database to the instance, and have the recovery process automatically start byusing the STARTUP command with the RECOVER clause:

STARTUP OPEN RECOVER

E: To start or stop your entire cluster database, that is, all of the instances and its enabled services, enter the following SRVCTL commands:

$ srvctl start database -db db_unique_name [-startoption start_options]

QUESTION 148Which two statements are true about a buffer cache?

A. When a buffer is read from a buffer cache, it may be inconsistent and require undo data to make it consistent.B. A buffer cache stores copies of data blocks from all files of the database.C. Buffer access is kept efficient by maintaining a least recently used (LRU) list for dirty and clean buffers.D. A buffer cache always resides completely in System Global Area (SGA).E. A buffer cache contains exactly three pools: default, keep, and recycle pool.

Correct Answer: AESection: (none)


Explanation


QUESTION 149You want to drop a pluggable database from a multitenant container database that is used for development, which two statements are true?

A. You can drop the PDB only if it is closed.B. You can drop the seed PDB, but you cannot create any other PDB within the CDB.C. You can drop the PDB and keep the data files to be reused by another PDB.D. When you drop the PDB, the data files and redo log files are automatically removed from the storage file system.



QUESTION 150Which process is responsible for writing the contents of database buffers to data files?

A. Process Monitor process (PMON)B. Listener Registration process (LREG)C. System Monitor process (SMON)D. Database Writer process (DBW)E. Log Writer process (LGWR)F. Checkpoint process (CKPT)


Explanation/Reference:Reference: http://docs.oracle.com/cd/E11882_01/server.112/e25789/process.htm#CNCPT1254 (see database writer process (DBW))

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