exadata database machine overview.docx

Exadata DataBase Machine Overview

This article is going to provide the overview about the Oracle’s Exadata database machine and the benefits of this engineering system. Oracle Database machine is fully integrated with oracle databases and it uses Exadata storage servers.This machine provides high performance and high availability for all type of database workloads.It also completely eliminates the all the bottlenecks and mainly IOPS. So you can simply consolidate multiple databases to one single database machine.These machines are very easy to deploy since one single script will be doing the job for you with help of Oracle Exadata Deployment Assistant (which generates the XML input file ).

Why do we need the database machines ?

Data warehousing issues:Oracle database machine will support large and complex queries.Since the storage is connected to high speed infiniband networks ,you will be getting more than enough I/O throughput to support massive scans.Using the smart scan feature, it reduces unproductive I/O. It aslo supports the parallel processing to improve the system performance.It uses the hybrid column compression to reduce the storage space.

OLTP issues:Database machines are completely eliminating the OLTP issues. It supports large user populations and transactions by providing the enough I/Os per second and caching frequently accessed data.It provides the consistent performance across all the tables and minimizing the IO latency.

Consolidation Issues:To reduce the datacenter space , most of the companies are behind the virtualization technologies for small and mid range operations.How this database machine is address the consolidation issues ? In database machine , you can accommodate multiple workloads on same box instead of having the multiple database servers on your environment. You can also prioritizing the workloads but it requires proper analysis and planning prior to the implementation.

Configuration issues:

Database eliminates the configuration issues completely. Since only oracle is going to provide the support for complete database machine components , all the hardwares and firmwares will be compatibility with the oracle database software.It also creates the well-balanced configuration across the database machine to eliminates the bottlenecks.

Database machine consists following components on it.1. Exadata Storage servers (cell)

2. Computing Nodes (Database servers – Typical oracle Linux x86_64 servers )

3. Infiniband Switches (Internal networking )

4. Cisco switches. (External networking )

5. Power distribution units

database machine x3-2 Full Rack

No of Exadata Stroage cells

No of Database Servers

No of Infiniband Switches

http://www.unixarena.com/wp-content/uploads/2014/11/database-machine-x3-2-Full-Rack.jpg

Full Rack 14 8 3

Half Rack 7 3 3

Quarter Rack

3 2 2

Exadata Storage servers:(cell)Exadata storage server is exclusively designed for oracle database.It is a self contained storage platform and runs the Exadata storage software. Databases are typically deployed across multiple exadata storage servers to provide the vast performance. The databases (compute nodes ) and cell communicate with each other via infiniband network.(40Gb/s). Exadata storage server runs on oracle Linux x86_64 and storage is managed by Exadata cell software.

You can’t allocate the Exadata storage to non-oracle database servers. The Exadata storage servers are exclusively designed to provide the storage to oracle databases within the Rack.

Exadata – Quarter Rack Example Exadata Storage Server X3-2 – Hardware Overview

http://www.unixarena.com/wp-content/uploads/2014/11/Exadata-1.jpg

Processors 12 Intel CPU cores

System Memory 64GB

Disk Drives (If HPD) 12×600 GB 15K RPM

Disk Drives (If HCD) 12x3TB 7.2K RPM

Flash 1.6 TB

Disk ControllerDisk Controller Host Bus Adapterwith 512 MB Battery Backed Write Cache

InfiniBand Network Dual-Port QDR (40Gb/s) InfiniBand Host Channel Adapter

Remote Management Integrated Lights Out Manager (ILOM) Ethernet Port

Power Supplies 2 x Redundant Hot-Swappable Power Supplies

Exadata Storage Server X3-2 Configuration Options Exadata storage servers is available in two type of configurations. q.HP(High Performance) disks 2. HC (High Capacity)disks. If you are looking for more storage space, then you need to choose the high capacity disk type (Ex: Dataware housing). If you need high performance (Ex: OLTP), You have to choose high performance disks.Please the below table to know the differences between the both configuration types.

High Performance Disks High Capacity Disks

Raw Disk Capacity 7.2TB 36TB

Raw Disk Throughput

1.8 GB/sec 1.3 GB/sec

Flash Throughput 7.25 GB/sec 6.75 GB/sec

X3-2 Database Server Hardware: OverviewConfiguration:

Processors 16 Intel CPU Cores

System Memory 256GB

Disk Drives 4 x 300 GB 10K RPM Disk Drives



Power Supplies 2 x Redundant Hot-Swappable Power Supplies

Network Interfaces• Dual-Port QDR (40Gb/s) InfiniBand Host Channel Adapter• Four 1/10 Gb Ethernet Ports (copper)• Two 10Gb Ethernet Ports (optical)

Database Machine X3-8 is only offered in a Full Rack.

Exadata – Database machine x3-8 Full Rack

Both X3-2 and X3-8 database machines contain 14 Exadata X3-2 cells, 3 InfiniBand switches, 2 power distribution units (PDUs) and an Ethernet switch.The difference is with the database server configuration. It just has 2

http://www.unixarena.com/wp-content/uploads/2014/11/database-machine-x3-8-Full-Rack.jpg

computing nodes where as X3-2 has 8 computing nodes. But x3-8 database servers has more cpu cores and physical memory.

X3-8 database Machine configuration:

Processors 80 Intel CPU Cores

System Memory 2TB

Disk Drives 4 x 300 GB 10K RPM Disk Drives



Power Supplies 4x Redundant Hot-Swappable Power Supplies

Network Interfaces• Dual-Port QDR (40Gb/s) InfiniBand Host Channel Adapter• Four 1/10 Gb Ethernet Ports (copper)• Two 10Gb Ethernet Ports (optical)

Exadata Storage Rack Expansions For an example , you have fully utilized the full rack of the database machine and running out of the Exadata storage cell space.How do you scale up the environment ? Should we need to order another database machine ? No. We just require Exadata storage servers . So we need to order for the Exadata Storage Expansion Racks along with Exadata storage servers and infiniband switches.

The full rack of the Exadata storage expansion can accommodate 18 Exadata storage servers and 3 infiniband Switches.In Half Rack , you can accommodate 9 Exadata storage servers and 3 infiniband switches. In Quarter rack , you can have only 4 Exadata storage servers and 2 Infiniband switches.

Infiniband Network OverviewInfiniband provides the inter-connectivity between the database servers and Exadata storage servers with the speed of 40Gb/s .It is used for storage networking ,RAC interconnect and high performance external connectivity.It

uses the ZDP protocol (Zero loss Zero Copy Datagram Protocol)so that very low CPU overhead required.

To explorer theX3-2 Exadata database machine 3D view,check out the below link, http://oracle.com.edgesuite.net/producttours/3d/exadata-x3-2/index.html

Architecture of Exadata Database Machine

Exadata Database machine provides a high performance,high availability and plenty of storage space platform for oracle database .The high availability clustering is is provided by Oracle RAC and ASM will be responsible for storage mirroring .Infiniband technology provides high bandwidth and low latency cluster interconnect and storage networking. The powerful compute nodes joins in the RAC cluster to offers the great performance.

In this article, we will see the

Exadata Database Machine Network architecture

Exadata Database Machine Storage architecture

Exadata Database Machine Software architecture.

How to scale up the Exadata Database Machine

Key components of the Exadata Database MachineShared storage: Exadata Storage servers Database Machine provides intelligent, high-performance shared storage to both single-instance and RAC implementations of Oracle Database using Exadata Storage Server technology.The Exadata storage servers is designed to provide the storage to oracle database using the ASM (Automatic Storage Management). ASM keeps the redundant copies of data on separate Exadata Storage Servers and it protects against the data loss if you lost the disk or entire storage server.

Shared Network – Infiniband

http://oracle.com.edgesuite.net/producttours/3d/exadata-x3-2/index.html

Database machine uses the infiniband network for interconnect between database servers and exadata storage servers. The infiniband network provides 40Gb/s speed.So the latency is very low and offers the high bandwidth. In Exadata Database machine , multiple infiniband switches and interface boning will be used to provide the network redundancy.

Shared cache:The database machine’s RAC environment, the database instance buffer cache are shared. If one instance has kept some data on cache and that required by another instance,the data will be provided to the required node via infiniband cluster interconnect. It increases the performance since the data is happening between memory to memory via cluster interconnect.

Database Server cluster:The Exadata database machine’s full rack consists , 8 compute nodes and you can able to build the 8-n0de cluster using the oracle RAC. The each compute nodes has up to 80 CPU cores and 256GB memory .

Cluster interconnect:By default, the database machine is configured use the infiniband storage network as cluster interconnect.

Database Machine – Network Architecture

There are three different networks has been shown on the above diagram.

Management Network – ILOM: ILOM(Integrated lights out manager) is the default remote hardware management on all oracle servers.It uses the traditional Ethernet network to manage the exadata database machine remotely. ILOM provides the graphical remote administration facility and it also helps the system administrators to monitor the hardware remotely.

Client Access:The database servers will be accessed by application servers via Ethernet network. Bonding will be created using multiple ethernet adapters for network redundancy and load balancing.Note: This database machine consists Cisco switch to provide the connectivity to ethernet networks.

InfiniBand Network ArchitectureThe below diagrams shows that how the infiniband links are connected to different components on X3-2 Half/Full Rack setup.

http://www.unixarena.com/wp-content/uploads/2014/11/Exadata-Network-Architecture.jpg

infiniband switch x3-2 half-full rack

The spine switch will be exists only on half rack and full rack exadata database configuration only. The spine switch will help you to scale the environment by providing the Inifiniband links to multiple racks. In the quarter rack of X3-2 model, you will get leaf switches . You can scale up to 18 rack by adding the infiniband cables to the infiniband switches.

How we can interconnect two racks ? Have a look at the below diagram closely.Single InfiniBand network formed based on a Fat Tree topology

Scale two Racks

http://www.unixarena.com/wp-content/uploads/2014/11/infiniband-switch-x3-2-half-full-rack.jpg

http://www.unixarena.com/wp-content/uploads/2014/11/Infifinband-netowrks.jpg

Six ports on each leaf switch are reserved for external connectivity.These ports are used for Connecting to media servers for tape backup,Connecting to external ETL servers,Client or application access Including Oracle Exalogic Elastic Cloud

Database Machine Software Architecture

Software architecture- exadata

CELLSRV, MS,RS & IORM are the important process of the exadata storage cell servers. In the DB servers , these storage’s griddisks are used to create the ASM diskgroup.In the database server, there will be special library called LIBCELL. In combination with the database kernel and ASM, LIBCELL transparently maps database I/O to exadata storage server.

http://www.unixarena.com/wp-content/uploads/2014/11/Software-architecute-exadata.jpg

There is no other filesystems are allowed to create in Exadata storage cell. Oracle Database must use the ASM for volume manager and filesystem.

Customers has option to choose the database servers operating system between oracle Linux and oracle Solaris x86 . Exadata will support the oracle database 11g release 2 and laster versions of database.

Database Machine Storage Architecture

Exadata Storage cell

Exadata storage servers has above mentioned software components. Oracle Linux is the default operating system for exadata storage cell software . CELLSRV is the core exadata storage component which provides the most of the services. Management Server (MS) provides Exadata cell management and configuration.MS is responsible for sending alerts and collects some statistics in addition to those collected by CELLSRV.Restart Server (RS) is used to start up/shut down the CELLSRV and MS services and monitors these services to automatically restart them if required.

How the disks are mapped to Database from the Exadata storage servers ?

http://www.unixarena.com/wp-content/uploads/2014/11/Storage-cell-1.jpg

Exadata Disks overview

If you look the below image , you can observe that database servers is considering the each cell nodes as failure group.

http://www.unixarena.com/wp-content/uploads/2014/11/Exadata-Disks-overview.jpg

Exadata DG

Exploring the Exadata Storage Cell Processes

Exadata storage cell is new to the industry and only oracle is offering such a customized storage for oracle database. Unlike the traditional SAN storage ,Exadata data storage will help to reduce the processing at the DB node level. Since the exadata storage cell has its own processors and 64GB physical memory , it can easily offload the DB nodes. It has huge amount of Flash storage to speed up the I/O .The default Flash cache settings is write through. These flash can also be used as storage (like harddrive). Flash devices can give 10x better performance than normal harddrive.

Examine the Exadata Storage cell Processes1. Login to Exadata storage cell .

http://www.unixarena.com/wp-content/uploads/2014/11/Exadata-DG.jpg

login as: root

[email protected]'s password:

Last login: Sat Nov 15 01:50:58 2014

[root@uaexacell1 ~]#

[root@uaexacell1 ~]# uname -a

Linux uaexacell1 2.6.39-300.26.1.el5uek #1 SMP Thu Jan 3 18:31:38 PST 2013 x86_64 x86_64 x86_64

GNU/Linux


2.List the exadata cell restart server process.(RS)

[root@uaexacell1 ~]# ps -ef |grep cellrs

root 10001 1 0 14:23 ? 00:00:00 /opt/oracle/cell11.2.3.2.1_LINUX.X64_130109/cellsrv/bin/cellrssrm

-ms 1 -cellsrv 1

root 10009 10001 0 14:23 ? 00:00:00

/opt/oracle/cell11.2.3.2.1_LINUX.X64_130109/cellsrv/bin/cellrsmmt -ms 1 -cellsrv 1

root 10010 10001 0 14:23 ? 00:00:00

/opt/oracle/cell11.2.3.2.1_LINUX.X64_130109/cellsrv/bin/cellrsomt -ms 1 -cellsrv 1

root 10011 10001 0 14:23 ? 00:00:00

/opt/oracle/cell11.2.3.2.1_LINUX.X64_130109/cellsrv/bin/cellrsbmt -ms 1 -cellsrv 1

root 10012 10011 0 14:23 ? 00:00:00

/opt/oracle/cell11.2.3.2.1_LINUX.X64_130109/cellsrv/bin/cellrsbkm -rs_conf

/opt/oracle/cell11.2.3.2.1_LINUX.X64_130109/cellsrv/deploy/config/cellinit.ora -ms_conf

/opt/oracle/cell11.2.3.2.1_LINUX.X64_130109/cellsrv/deploy/config/cellrsms.state -cellsrv_conf

/opt/oracle/cell11.2.3.2.1_LINUX.X64_130109/cellsrv/deploy/config/cellrsos.state -debug 0

root 10022 10012 0 14:23 ? 00:00:00

/opt/oracle/cell11.2.3.2.1_LINUX.X64_130109/cellsrv/bin/cellrssmt -rs_conf

/opt/oracle/cell11.2.3.2.1_LINUX.X64_130109/cellsrv/deploy/config/cellinit.ora -ms_conf

/opt/oracle/cell11.2.3.2.1_LINUX.X64_130109/cellsrv/deploy/config/cellrsms.state -cellsrv_conf

/opt/oracle/cell11.2.3.2.1_LINUX.X64_130109/cellsrv/deploy/config/cellrsos.state -debug 0

root 12992 12945 0 14:48 pts/2 00:00:00 grep cellrs


RS – Restart server process is responsible to make the cellsrv & ms process up for all the time. If these process are not responding or terminated, automatically RS(restart server) , will restart the cellsrv & ms process.

3.List the MS process. (Management Server process). MS maintains the cell configuration with the help of cellcli(command line utility). It also responsible for sending alerts and collecting the exadata cell statistics.

[root@uaexacell1 ~]# ps -ef | grep ms.err

root 10013 10009 1 14:23 ? 00:00:21 /usr/java/jdk1.5.0_15/bin/java -Xms256m -Xmx512m -

Djava.library.path=/opt/oracle/cell11.2.3.2.1_LINUX.X64_130109/cellsrv/lib -Ddisable.checkForUpdate=true -

jar /opt/oracle/cell11.2.3.2.1_LINUX.X64_130109/oc4j/ms/j2ee/home/oc4j.jar -out

/opt/oracle/cell11.2.3.2.1_LINUX.X64_130109/cellsrv/deploy/log/ms.lst -err

/opt/oracle/cell11.2.3.2.1_LINUX.X64_130109/cellsrv/deploy/log/ms.err

root 13945 12945 0 14:56 pts/2 00:00:00 grep ms.err


MS(Management server) process’s parent process id belongs to RS (restart server).RS will restart the MS when it crashes or terminated abnormally.

4.CELLSRV is multi-threaded process which provides the storage services to the database nodes. CELLSRV communicates with oracle database to serve simple block requests,such as database buffer cache reads and smart scan requests. You list the cellsrv process using below mentioned command.

[root@uaexacell1 ~]# ps -ef | grep "/cellsrv "

root 5705 10010 8 19:13 ? 00:08:20 /opt/oracle/cell11.2.3.2.1_LINUX.X64_130109/cellsrv/bin/cellsrv

100 5000 9 5042

1000 8390 4457 0 20:57 pts/1 00:00:00 grep /cellsrv


CELLSRV process’s parent process id belongs to RS process(restart server).RS will restart the CELLRSV when it crashes or terminated abnormally.

5.Let me kill the MS process and see if it restarts automatically.

[root@uaexacell1 ~]# ps -ef |grep ms.err







[root@uaexacell1 ~]# kill -9 10013






within few seconds another MS process has started with new PID.









6.How to stop and start the services on exadata storage cell using the init scripts ? Its like other start up scripts will be located on /etc/init.d and link has been added to /etc/rc3.d to bring up the cell process on the start-up.

[root@uaexacell1 ~]# cd /etc/init.d

[root@uaexacell1 init.d]# ls -lrt |grep cell

lrwxrwxrwx 1 root root 50 Nov 15 01:15 celld -> /opt/oracle/cell/cellsrv/deploy/scripts/unix/celld

[root@uaexacell1 init.d]# cd /etc/rc3.d

[root@uaexacell1 rc3.d]# ls -lrt |grep cell

lrwxrwxrwx 1 root root 15 Nov 15 01:15 S99celld -> ../init.d/celld

[root@uaexacell1 rc3.d]#

This script can be used to start, stop, restart the exadata cell software.

To stop the cell software

[root@uaexacell1 rc3.d]# ./S99celld stop

Stopping the RS, CELLSRV, and MS services...

The SHUTDOWN of services was successful.


To start the cell software

[root@uaexacell1 rc3.d]# ./S99celld start

Starting the RS, CELLSRV, and MS services...

Getting the state of RS services... running

Starting CELLSRV services...

The STARTUP of CELLSRV services was successful.

Starting MS services...

The STARTUP of MS services was successful.


TO restart the cell software,

[root@uaexacell1 rc3.d]# ./S99celld restart










Cell software services will be managed using celladmin user and cellcli utility. You can also start,stop,restart the services using cellcli utility.We will see the cellcli in next article.

Hope this article give you the overview of the exadata storage cell processes.

Exadata – CELLCLI command Line Utility1

Exadata storage is managed by CELLCLI command line utility. Management process (MS) will communicate with cellcli to maintain the configuration on the system. CELLCLI utility can be launched by user “celladmin” or “root”. In this article ,we will see how to list the storage objects and how to stop/start the cell services using the CELLCLI utility.At the end of the article, we will see how to use the help command to form the command syntax.

1. Login to Exadata storage cell using celladmin user and start cellcli utility.

[celladmin@uaexacell1 ~]$ id

uid=1000(celladmin) gid=500(celladmin) groups=500(celladmin),502(cellusers)

[celladmin@uaexacell1 ~]$ cellcli

CellCLI: Release 11.2.3.2.1 - Production on Sun Nov 16 16:05:27 GMT+05:30 2014

Copyright (c) 2007, 2012, Oracle. All rights reserved.

Cell Efficiency Ratio: 1

CellCLI>

Note:CELLCLI is case in-sensitive. So you can use the both upper & lower case.2. List the cell information. (Exadata storage box)

CellCLI> list cell

uaexacell1 online

CellCLI> list cell detail

name: uaexacell1

bbuTempThreshold: 60

bbuChargeThreshold: 800

bmcType: absent

cellVersion: OSS_11.2.3.2.1_LINUX.X64_130109

cpuCount: 1

diagHistoryDays: 7

fanCount: 1/1

fanStatus: normal

flashCacheMode: WriteThrough

id: a3c87541-4d0e-478a-9ec9-8a4bea3eeaac

interconnectCount: 2

interconnect1: eth1

iormBoost: 0.0

ipaddress1: 192.168.1.5/24

kernelVersion: 2.6.39-300.26.1.el5uek

makeModel: Fake hardware

metricHistoryDays: 7

offloadEfficiency: 1.0

powerCount: 1/1

powerStatus: normal

releaseVersion: 11.2.3.2.1

releaseTrackingBug: 14522699

status: online

temperatureReading: 0.0

temperatureStatus: normal

upTime: 0 days, 2:24

cellsrvStatus: running

msStatus: running

rsStatus: running

CellCLI>

3. List the available storage devices on the system.It will list both harddrives and flash disks.

CellCLI> LIST LUN

/opt/oracle/cell11.2.3.2.1_LINUX.X64_130109/disks/raw/DISK00

/opt/oracle/cell11.2.3.2.1_LINUX.X64_130109/disks/raw/DISK00 normal



























/opt/oracle/cell11.2.3.2.1_LINUX.X64_130109/disks/raw/FLASH00

/opt/oracle/cell11.2.3.2.1_LINUX.X64_130109/disks/raw/FLASH00 normal



























CellCLI>

My Exdata storage is running on virtual hardware. That’s why you are seeing the storage devices are listing with full path. In real hardware, You will be just seeing the controller number and disks numbers. (Ex: 0_0 0_0 normal). Note: Exadata VM will be used by oracle only for training purposes.

4. The below command will list only the harddisks attached to the exadata server.

CellCLI> list lun where disktype=harddisk





























CellCLI>

5.The below command list only the flash devices which are attached to the exadata storage server.

CellCLI> list lun where disktype=flashdisk





























CellCLI>

6.List the celldisks

CellCLI> list celldisk

CD_DISK00_uaexacell1 normal














FD_00_uaexacell1 normal














CellCLI>

7. List grid disks

CellCLI> list griddisk

DATA01_CD_DISK00_uaexacell1 active














CellCLI>

8. List the flash disks which are configured as flashcache.

CellCLI> list flashcache detail

name: uaexacell1_FLASHCACHE

cellDisk:

FD_05_uaexacell1,FD_02_uaexacell1,FD_04_uaexacell1,FD_03_uaexacell1,FD_01_uaexacell1,FD_12_uaexacel

l1

creationTime: 2014-11-16T18:57:54+05:30

degradedCelldisks:

effectiveCacheSize: 4.3125G

id: f972c16a-5fcc-4cc7-8083-a06b026f662b

size: 4.3125G

status: normal

CellCLI>

9.List the flashcache which are configured as flashlog.

CellCLI> list flashlog detail

name: uaexacell1_FLASHLOG

cellDisk: FD_13_uaexacell1

creationTime: 2014-11-16T16:31:23+05:30

degradedCelldisks:

effectiveSize: 512M

efficiency: 100.0

id: 1fbc893b-4ab1-4861-b6cc-0b86bd45376d

size: 512M

status: normal

CellCLI>

10.List only the status of the RS,MS and CELLSRV status.

CellCLI> list cell attributes rsStatus, msStatus, cellsrvStatus detail

rsStatus: running

msStatus: running

cellsrvStatus: running

11. To stop the services using CELLCLI,

CellCLI> alter cell shutdown services all



CellCLI>

12.To start the services using CELLCLI,

CellCLI> alter cell startup services all







CellCLI>

13.To restart the services forcefully using CELLCLI,

CellCLI> alter cell restart services all force









CellCLI>

The same way you can shutdown the services forcefully by swapping the “restart” command with “shutdown”

14. How to get the command syntax help in Exadata CELLCLI ?

Just execute the command “help” to get the list of commands.

CellCLI> help

HELP [topic]

Available Topics:

ALTER

ALTER ALERTHISTORY

ALTER CELL

ALTER CELLDISK

ALTER FLASHCACHE

ALTER GRIDDISK

ALTER IBPORT

ALTER IORMPLAN

ALTER LUN

ALTER PHYSICALDISK

ALTER QUARANTINE

ALTER THRESHOLD

ASSIGN KEY

CALIBRATE

CREATE

CREATE CELL

CREATE CELLDISK

CREATE FLASHCACHE

CREATE FLASHLOG

CREATE GRIDDISK

CREATE KEY

CREATE QUARANTINE

CREATE THRESHOLD

DESCRIBE

DROP

DROP ALERTHISTORY

DROP CELL

DROP CELLDISK

DROP FLASHCACHE

DROP FLASHLOG

DROP GRIDDISK

DROP QUARANTINE

DROP THRESHOLD

EXPORT CELLDISK

IMPORT CELLDISK

LIST

LIST ACTIVEREQUEST

LIST ALERTDEFINITION

LIST ALERTHISTORY

LIST CELL

LIST CELLDISK

LIST FLASHCACHE

LIST FLASHCACHECONTENT

LIST FLASHLOG

LIST GRIDDISK

LIST IBPORT

LIST IORMPLAN

LIST KEY

LIST LUN

LIST METRICCURRENT

LIST METRICDEFINITION

LIST METRICHISTORY

LIST PHYSICALDISK

LIST QUARANTINE

LIST THRESHOLD

SET

SPOOL

START

CellCLI>

15. To get the help for specific topic,use HELP <TOPIC> command.

CellCLI> HELP LIST

Enter HELP LIST <object_type> for specific help syntax.

<object_type>: {ACTIVEREQUEST | ALERTHISTORY | ALERTDEFINITION | CELL

| CELLDISK | FLASHCACHE | FLASHLOG | FLASHCACHECONTENT | GRIDDISK

| IBPORT | IORMPLAN | KEY | LUN

| METRICCURRENT | METRICDEFINITION | METRICHISTORY

| PHYSICALDISK | QUARANTINE | THRESHOLD }

CellCLI>

16.To get the help of specific command,use the below syntax,

CellCLI> HELP LIST CELLDISK

Usage: LIST CELLDISK [ | ] [<attribute_list>] [DETAIL]

Purpose: Displays specified attributes for cell disks.

Arguments:

: The name of the cell disk to be displayed.

: an expression which determines which cell disks should

be displayed.

<attribute_list>: The attributes that are to be displayed.

ATTRIBUTES {ALL | attr1 [, attr2]... }

Options:

[DETAIL]: Formats the display as an attribute on each line, with

an attribute descriptor preceding each value.

Examples:

LIST CELLDISK cd1 DETAIL

LIST CELLDISK where freespace > 100M

CellCLI>

You can check the exadata storage cell logs using the below command,

CellCLI> list alerthistory

1_1 2014-11-15T01:17:14+05:30 critical "File system "/" is 84% full, which is above the 80%

threshold. Accelerated space reclamation has started. This alert will be cleared when file system "/"

becomes less than 75% full. Top three directories ordered by total space usage are as follows: /usr :

2.35G /tmp : 1.37G /opt : 593.27M"




2.35G /tmp : 1.37G /opt : 593.36M"




2.35G /tmp : 1.37G /opt : 593.38M"




2.35G /tmp : 1.37G /opt : 593.39M"

1_5 2014-11-16T15:00:21+05:30 clear "File system "/" is 62% full, which is below the 75%

threshold. Normal space reclamation will resume."

2 2014-11-16T14:47:28+05:30 critical "RS-7445 [Serv CELLSRV hang detected] [It will be

restarted] [] [] [] [] [] [] [] [] [] []"

3 2014-11-16T15:07:05+05:30 critical "RS-7445 [Serv MS is absent] [It will be restarted] []

[] [] [] [] [] [] [] [] []"

4 2014-11-16T16:31:51+05:30 critical "ORA-07445: exception encountered: core dump

[_ZN14FlashCacheCore20fcDeleteMemoryForFciEj()+45] [11] [0x000000000] [] [] []"















12 2014-11-16T16:59:48+05:30 critical "RS-7445 [CELLSRV monitor disabled] [Detected a

flood of restarts] [] [] [] [] [] [] [] [] [] []"





CellCLI>

Exadata Storage Cell – Administrating the Disks

Exadata Storage server uses the cell software to manage the disks. Like volume manager, we need to build couple of virtual layers to get the grid disks.These griddisk will be used to create the ASM disk group on the database level . In this article, we will see that how we can create/delete the celldisk, griddisk,flashcache & flashlog using the cellcli utility as well as Linux command line.As i said earlier, we can also use flash disk to create the griddisks for high write intensive databases. But in most of the cases, we will be using those flash disks for flashcache and flashlog purposes due to the storage limitation.

Exadata Storage ArchitectureThe below diagram will explain that how the virtual storage objects are built on exadata storage server .

Exadata storage cell disks

1. Login to the exadata storage server celladmin and start cellcli utility.

[celladmin@uaexacell1 ~]$ id

uid=1000(celladmin) gid=500(celladmin) groups=500(celladmin),502(cellusers)

[celladmin@uaexacell1 ~]$ cellcli

CellCLI: Release 11.2.3.2.1 - Production on Sun Nov 16 22:19:23 GMT+05:30 2014

Copyright (c) 2007, 2012, Oracle. All rights reserved.

Cell Efficiency Ratio: 1

CellCLI>

http://www.unixarena.com/wp-content/uploads/2014/11/Exadata-storage-cell-disks.jpg

2.List the physical disks. It lists all the attached harddisks and flash drives.

CellCLI> list physicaldisk



























CellCLI>

3.Check the existing celldisks.

CellCLI> LIST CELLDISK

CellCLI>

4. Create the celldisks on all disks. (we normally do this)

CellCLI> CREATE CELLDISK ALL

CellDisk CD_DISK00_uaexacell1 successfully created














CellDisk FD_00_uaexacell1 successfully created














CellCLI> LIST CELLDISK







CellCLI>

We have successfully created the celldisks on all the harddisks and flashdisks. This is one time activity and you no need to perform celldisk creation unless you replace any faulty drives.

5.To create the griddisk on all the harddisks , use the below command.

CellCLI> create griddisk ALL HARDDISK PREFIX=CD_DISK

GridDisk CD_DISK_CD_DISK00_uaexacell1 successfully created














CellCLI>

6.If you want to create the griddisk with specific size & name, use the below syntax,

CellCLI> CREATE GRIDDISK DATA01_DG celldisk = CD_DISK00_uaexacell1, size =100M

GridDisk DATA01_DG successfully created


DATA01_DG active

CellCLI> list griddisk detail

name: DATA01_DG

availableTo:

cachingPolicy: default

cellDisk: CD_DISK00_uaexacell1

comment:

creationTime: 2014-11-16T22:27:50+05:30

diskType: HardDisk

errorCount: 0

id: d681708b-9717-41fc-afad-78d61ca2f476

offset: 48M

size: 96M

status: active

CellCLI>

If you are having the Exadata quarter rack , you need to create the same size grid disks on all the exadata storage cells. Oracle ASM will mirror across all the cell nodes for redundancy. When Database requires the additional space , its highly recommended to create the griddisk with existing griddisk size.

7.How to delete the griddisk ? Drop (delete) the specific griddisk using the below syntax

CellCLI> list griddisk DATA01_DG

DATA01_DG active

CellCLI> drop griddisk DATA01_DG

GridDisk DATA01_DG successfully dropped

CellCLI> list griddisk DATA01_DG

CELL-02007: Grid disk does not exist: DATA01_DG

CellCLI>

8.You can also drop the bunch of grid disks using the prefix.Please see the below syntax.


CD_DISK_CD_DISK00_uaexacell1 active














CellCLI> drop griddisk all prefix=CD_DISK

GridDisk CD_DISK_CD_DISK00_uaexacell1 successfully dropped














CellCLI>

The above command deletes the griddisk which name starts from “CD_DISK”.

9. How to drop specific celldisk ? Drop the specific celldisk using the below syntax.

CellCLI> list celldisk CD_DISK00_uaexacell1


CellCLI> drop celldisk CD_DISK00_uaexacell1

CellDisk CD_DISK00_uaexacell1 successfully dropped

CellCLI> list celldisk CD_DISK00_uaexacell1

CELL-02525: Unknown cell disk: CD_DISK00_uaexacell1

CellCLI>

Playing the Flashdisks

1. List the flashdisks

CellCLI> LIST CELLDISK where disktype=flashdisk















CellCLI>

Flashdisks will commonly used to create the flashcache and flashlog.

Exadata Flashdisk

2.Configuring specific flashdisks as flashlog.

CellCLI> CREATE FLASHLOG celldisk='FD_00_uaexacell1,FD_01_uaexacell1' , SIZE=100M

Flash log uaexacell1_FLASHLOG successfully created

CellCLI> LIST FLASHLOG

uaexacell1_FLASHLOG normal

CellCLI> LIST FLASHLOG DETAIL

name: uaexacell1_FLASHLOG

cellDisk: FD_00_uaexacell1,FD_01_uaexacell1

creationTime: 2014-11-16T23:02:50+05:30

degradedCelldisks:

effectiveSize: 96M

http://www.unixarena.com/wp-content/uploads/2014/11/Exadata-Flash.jpg

efficiency: 100.0

id: a12265f9-f80b-491b-a0e5-518b2143eede

size: 96M

status: normal

CellCLI>

3.Configuring flashcache on specific flashdisks.

CellCLI> CREATE FLASHCACHE celldisk='FD_03_uaexacell1,FD_04_uaexacell1' , SIZE=100M

Flash cache uaexacell1_FLASHCACHE successfully created

CellCLI> LIST FLASHCACHE

uaexacell1_FLASHCACHE normal

CellCLI> LIST FLASHCACHE DETAIL

name: uaexacell1_FLASHCACHE

cellDisk: FD_04_uaexacell1,FD_03_uaexacell1

creationTime: 2014-11-16T23:04:50+05:30

degradedCelldisks:

effectiveCacheSize: 96M

id: fe936779-abfc-4b70-a0d0-5146523cef48

size: 96M

status: normal

CellCLI>

4.Deleting the flashlog.

CellCLI> DROP FLASHLOG

Flash log uaexacell1_FLASHLOG successfully dropped

CellCLI> LIST FLASHLOG

CellCLI>

5.Deleting the flashcache.


uaexacell1_FLASHCACHE normal

CellCLI> DROP FLASHCACHE

Flash cache uaexacell1_FLASHCACHE successfully dropped


CellCLI>

We need to invoke cellcli utility to manage the virtual storage objects. Is it possible manage the storage from command line ? Yes. You can manage the storage from linux command line. The below example will show that all the

cellcli commands can be executed from the command line.you need to provide the command along with “cellcli -e” .

[celladmin@uaexacell1 ~]$ cellcli -e create griddisk all harddisk prefix=UADB

GridDisk UADB_CD_DISK01_uaexacell1 successfully created













[celladmin@uaexacell1 ~]$ cellcli -e list griddisk where disktype=harddisk

UADB_CD_DISK01_uaexacell1 active













[celladmin@uaexacell1 ~]$

Exadata – Distributed Command-Line Utility (dcli)

Distributed command line utility(dcli) provides an option to execute the monitoring and administration commands on multiple servers simultaneously.In exadata database machine , you may need to create the griddisks on all the exadata storage cells frequently. Each time , you need to login to all the storage cells and create the griddisk manually.But dcli will make our life easier once you configured the all the storage cells on any one of the storage cell or on the database node. In this article ,we will see how to configure the dcli on multiple storage cells.

It’s good to configure the dcli on the database server. So that you no need to login to exadata storage cells for each grid disk creation/drop.

1. Login to the database server or any one of the exadata storage cell.Make sure all the exadata stroage cells has been added to the /etc/hosts file.

[root@uaexacell1 ~]# cat /etc/hosts

# Do not remove the following line, or various programs

# that require network functionality will fail.

127.0.0.1 localhost.localdomain localhost

192.168.2.50 uaexacell1

192.168.2.51 uaexacell2

192.168.2.52 uaexacell3


2. Create the file with all the exadata storage cell .

[root@uaexacell1 ~]# cat << END >> exacells

> uaexacell1

> uaexacell2

> uaexacell3

> END


[root@uaexacell1 ~]# cat exacells

uaexacell1

uaexacell2

uaexacell3


3.Create the ssh key for the host.

[root@uaexacell1 ~]# ssh-keygen -t rsa

Generating public/private rsa key pair.

Enter file in which to save the key (/root/.ssh/id_rsa):

Created directory '/root/.ssh'.

Enter passphrase (empty for no passphrase):

Enter same passphrase again:

Your identification has been saved in /root/.ssh/id_rsa.

Your public key has been saved in /root/.ssh/id_rsa.pub.

The key fingerprint is:

15:ac:fb:66:8b:5f:32:09:dd:b9:e7:ca:6c:ef:6b:b4 root@uaexacell1


4.Execute the below command to make the password less login for all the hosts which we have added in exacells file. DCLI Utility configures the password less authentication across the nodes using ssh .

[root@uaexacell1 ~]# dcli -g exacells -k

The authenticity of host 'uaexacell1 (192.168.2.50)' can't be established.

RSA key fingerprint is e6:e9:4f:d1:a0:05:eb:38:d5:bf:5b:fb:2a:5f:2c:b7.

Are you sure you want to continue connecting (yes/no)? yes

Warning: Permanently added 'uaexacell1,192.168.2.50' (RSA) to the list of known hosts.

celladmin@uaexacell1's password:



uaexacell1: ssh key added




We have successfully configured the dcli utility on all the exadata storage cells. Now we can monitor & administrate cells nodes from the current host.

5.Let me check the status of the all exadata cells.

[root@uaexacell1 ~]# dcli -g exacells cellcli -e list cell

uaexacell1: uaexacell1 online




6.Create the griddisk on all the exadata storage node using the dcli utility.

[root@uaexacell1 ~]# dcli -g exacells cellcli -e list celldisk where disktype=harddisk

uaexacell1: CD_DISK01_uaexacell1 normal


















[root@uaexacell1 ~]# dcli -g exacells cellcli -e create griddisk HRDB celldisk=CD_DISK01_uaexacell1,

size=100M

uaexacell1: GridDisk HRDB successfully created




[root@uaexacell1 ~]# dcli -g exacells cellcli -e list griddisk HRDB detail

uaexacell1: name: HRDB

uaexacell1: availableTo:

uaexacell1: cachingPolicy: default

uaexacell1: cellDisk: CD_DISK01_uaexacell1

uaexacell1: comment:

uaexacell1: creationTime: 2014-11-17T15:46:43+05:30

uaexacell1: diskType: HardDisk

uaexacell1: errorCount: 0

uaexacell1: id: 3bf213a3-dafc-41b7-b133-5580dd04c334

uaexacell1: offset: 48M

uaexacell1: size: 96M

uaexacell1: status: active









uaexacell2: id: 21014da6-6e17-4ca1-a7dc-cc059bd75654












uaexacell3: id: 3821ce2c-4376-4674-8cb4-6c8868b5b1f9





You can also use the dcli command without having the hosts file.

[root@uaexacell1 ~]# dcli -c uaexacell1,uaexacell2,uaexacell3 cellcli -e drop griddisk HRDB

uaexacell1: GridDisk HRDB successfully dropped




Exadata Storage Cell Commands Cheat Sheet

It is not an easy to remember the commands since most of the UNIX administrators are working on multiple Operating systems and different OS flavors. Exadata and ZFS appliance are adding additional responsibility to Unix administrator and need to remember those appliance commands as well. This

article will provide the reference to all Exadata storage cell commands with examples for some complex command options.

All the below mentioned commands will work only on cellcli prompt.

Listing the Exadata Storage cell Objects (LIST)Command Description Examples

cellcli To Manage the Exadata cell Storage

[root@uaexacell1 init.d]# cellcliCellCLI: Release 11.2.3.2.1 – Production on Tue Nov 18 02:16:03 GMT+05:30 2014Copyright (c) 2007, 2012, Oracle. All rights reserved.Cell Efficiency Ratio: 1CellCLI>

LIST CELL List the Cell StatusCellCLI> LIST CELLuaexacell1 onlineCellCLI>

LIST LUN To list all the physical Drive & Flash drives

LIST PHYSICALDISK To list all the physical Drive & Flash drives

LIST LUN where celldisk = <celldisk>To list the LUN which is mapped to specific disk

CellCLI> LIST LUN where celldisk = FD_13_uaexacell1FLASH13 FLASH13 normal

LIST CELL DETAIL List the cell Status with all attributes

CellCLI> LIST CELL DETAILname: uaexacell1bbuTempThreshold: 60bbuChargeThreshold: 800bmcType: absent

LIST CELL attributes <attribute> To list the specific cell attributesCellCLI> LIST CELL attributes flashCacheModeWriteThrough

LIST CELLDISK List all the cell DisksCellCLI> LIST CELLDISKCD_DISK00_uaexacell1 normalCD_DISK01_uaexacell1 normal

LIST CELLDISK DETAIL List all the cell Disks with Detailed CellCLI> LIST CELLDISK detail

information

name: FD_13_uaexacell1comment:creationTime: 2014-11-15T01:46:57+05:30deviceName: 0_0devicePartition: 0_0diskType: FlashDisk

LIST CELLDISK <CELLDISK> detail TO list the Specific celldisk detail

CellCLI> LIST CELLDISK FD_00_uaexacell1 detailname: FD_00_uaexacell1comment:creationTime: 2014-11-15T01:46:56+05:30

LIST CELLDISK where disktype=harddisk

To list the celldisk which are created using harddisk

CellCLI> LIST CELLDISK where disktype=harddiskCD_DISK00_uaexacell1 normalCD_DISK01_uaexacell1 normalCD_DISK02_uaexacell1 normal

LIST CELLDISK where disktype=flashdisk

To list the celldisk which are created using Flashdisk

CellCLI> LIST CELLDISK where disktype=flashdiskFD_00_uaexacell1 normalFD_01_uaexacell1 normalFD_02_uaexacell1 normal

LIST CELLDISK where freespace > SIZETo list the celldisks which has more than specificed size

CellCLI> LIST CELLDISK where freespace > 50MFD_00_uaexacell1 normalFD_01_uaexacell1 normal

LIST FLASHCACHE To list the configured FLASHCACHE

LIST FLASHCACHE DETAIL To list the configured FLASHCACHE in detail

LIST FLASHLOG To list the configured FLASHLOG

LIST FLASHLOG DETAIL To list the configured FLASHLOG in detail

LIST FLASHCACHECONTENT To list the Flashcache content

LIST GRIDDISK To list the griddisksCellCLI> LIST GRIDDISKDATA01_CD_DISK00_uaexacell1 DATA01_CD_DISK01_uaexacell1

LIST GRIDDISK DETAIL To list the griddisks in detail CellCLI> LIST GRIDDISK DETAIL

name: DATA01_CD_DISK00_uaexacell1availableTo:cachingPolicy: defaultcellDisk: CD_DISK00_uaexacell1

LIST GRIDDISK <GRIDDISK_NAME> To list the specific GriddiskCellCLI> LIST GRIDDISK DATA01_CD_DISK00_uaexacell1DATA01_CD_DISK00_uaexacell1

LIST GRIDDISK <GRIDDISK_NAME> detail

To list the specific Griddisk in detail

CellCLI> LIST GRIDDISK DATA01_CD_DISK00_uaexacell1 detailname: DATA01_CD_DISK00_uaexacell1availableTo:cachingPolicy: defaultcellDisk: CD_DISK00_uaexacell1

LIST GRIDDISK where size > SIZETo list the griddisk which size is higher than specified value

CellCLI> LIST GRIDDISK where size > 750MDATA01_CD_DISK00_uaexacell1

LIST IBPORT To list the inifiniband Port

LIST IORMPLAN To list the IORMPLANCellCLI> LIST IORMPLANuaexacell1_IORMPLAN active

LIST IORMPLAN DETAIL To list the IORMPLAN in DETAIL

CellCLI> LIST IORMPLAN DETAILname: uaexacell1_IORMPLANcatPlan:dbPlan:objective: basicstatus: active

LIST METRICCURRENT To get the I/O’s second for all the objects

CellCLI> LIST METRICCURRENTCD_BY_FC_DIRTY CD_DISK00_uaexacell1MBCD_BY_FC_DIRTY CD_DISK01_uaexacell1MBCD_BY_FC_DIRTY CD_DISK02_uaexacell1MBCD_BY_FC_DIRTY CD_DISK03_uaexacell1MB

LIST METRICCURRENT cl_cput, cl_runq detail

To list the RUNQ

CellCLI> list metriccurrent cl_cput, cl_runq detailname: CL_CPUTalertState: normalcollectionTime: 2014-11-18T02:42:26+05:30metricObjectName: uaexacell1metricType: InstantaneousmetricValue: 4.7 %objectType: CELLname: alertState: normalcollectionTime: 2014-11-18T02:42:26+05:30metricObjectName: uaexacell1metricType: InstantaneousmetricValue: 12.2objectType: CELL

LIST QUARANTINE To list the QUARANTINE disk

LIST QUARANTINE detail To list the QUARANTINE disk in detail

LIST THRESHOLD To list the thersold limits

LIST THRESHOLD DETAIL To list the thersold limits in detail

LIST ACTIVEREQUEST To list the active Requests

LIST ALERTHISTORY To list the alerts

CREATING the Exadata Storage cell Objects (CREATE)The below commands will be used most commonly on exadata storage to create the virtual objects.

CREATE CELL <CELL_NAME> interconnect1=<ethx> Configures the cell network

CellCLI> CREATE CELL uaexacell1Cell uaexacell1 successfully createdStarting CELLSRV services…The STARTUP of CELLSRV services was successful.Flash cell disks, FlashCache, and FlashLog will be created.

CREATE CELLDISK <CELLDISK_NAME> <LUN> Creates cell disk(s) according to CREATE CELLDISK UADBG1

attributes provided.

CREATE CELLDISK ALL HARDISKCreates cell disk(s) on all the harddisks

CellCLI> CREATE CELLDISK ALL HARDDISKCellDisk CD_DISK00_uaexacell1 successfully createdCellDisk CD_DISK01_uaexacell1 successfully createdCellDisk CD_DISK02_uaexacell1 successfully created

CREATE CELLDISK ALLCreates cell disk(s) on all the harddisks & flashdisks

CellCLI> CREATE CELLDISK ALLCellDisk CD_DISK00_uaexacell1 successfully created

CREATE CELLDISK ALL FLASHDISKCreates cell disk(s) on all the flashdisks

CellCLI> CREATE CELLDISK ALL FLASHDISKCellDisk FD_00_uaexacell1 successfully created

CREATE FLASHCACHE celldisk=”Flash_celldisk1″Creates flash cache for IO requests on specific flashdisk

CellCLI> CREATE FLASHCACHE celldisk=”FD_00_uaexacell1,FD_01_uaexacell1″, size=500M

CREATE FLASHCACHE ALL size = <size>Creates flash cache for IO requests on all deviceswith specific size

CREATE FLASHCACHE ALL size = 10G

CREATE FLASHLOG celldisk=”Flash_celldisk1″Creates flash log for logging requests on specified flashdisk

CellCLI> CREATE FLASHLOG celldisk=”FD_00_uaexacell1,FD_01_uaexacell1″, size=500M

CREATE FLASHLOG ALL size = <size>Creates flash log for logging requests on all deviceswith specific size

CREATE FLASHLOG ALL size = 252M

CREATE GRIDDISK <GRIDDISK_NAME> CELLDISK=<celldisk>

Creates grid disk on specific disk

CellCLI> CREATE GRIDDISK UADBDK1 CELLDISK=CD_DISK00_uaexacell1GridDisk UADBDK1 successfully createdCellCLI>

CREATE GRIDDISK <GRIDDISK_NAME> CELLDISK=<celldisk>, size=<size>

Creates grid disk on specific disk with specific size

CellCLI> CREATE GRIDDISK UADBDK2 CELLDISK=CD_DISK02_uaexacell1, SIZE=100MGridDisk UADBDK2 successfully createdCellCLI>

CREATE GRIDDISK ALL HARDDISK PREFIX=<Disk_Name>, size=<size>

Create Grid disks on all the harddisk with specific size.

CellCLI> CREATE GRIDDISK ALLsize=100MCell disks were skipped because they had no freespace for grid disks: CD_DISK00_uaexacell1.

GridDisk UADBPROD_CD_DISK01_uaexacell1 successfully createdGridDisk UADBPROD_CD_DISK02_uaexacell1 successfully createdGridDisk UADBPROD_CD_DISK03_uaexacell1 successfully createdGridDisk UADBPROD_CD_DISK04_uaexacell1 successfully createdGridDisk UADBPROD_CD_DISK05_uaexacell1 successfully createdGridDisk UADBPROD_CD_DISK06_uaexacell1 successfully createdGridDisk UADBPROD_CD_DISK07_uaexacell1 successfully createdGridDisk UADBPROD_CD_DISK08_uaexacell1 successfully createdGridDisk UADBPROD_CD_DISK09_uaexacell1 successfully createdGridDisk UADBPROD_CD_DISK10_uaexacell1 successfully created

CREATE GRIDDISK ALL FLASHDISK PREFIX=<Disk_Name>, size=<size>

Create Grid disks on all the flashdisk with specific size.

CellCLI> CREATE GRIDDISK ALL FLASHDISK PREFIX=UAFLSHDB, size=100MGridDisk UAFLSHDB_FD_00_uaexacell1 successfully createdGridDisk UAFLSHDB_FD_01_uaexacell1 successfully createdGridDisk UAFLSHDB_FD_02_uaexacell1 successfully createdGridDisk UAFLSHDB_FD_03_uaexacell1 successfully createdGridDisk UAFLSHDB_FD_04_uaexacell1 successfully createdGridDisk UAFLSHDB_FD_05_uaexacell1 successfully createdGridDisk UAFLSHDB_FD_06_uaexacell1 successfully createdGridDisk UAFLSHDB_FD_07_uaexacell1 successfully createdGridDisk UAFLSHDB_FD_08_uaexacell1 successfully createdGridDisk UAFLSHDB_FD_09_uaexacell1 successfully createdGridDisk UAFLSHDB_FD_10_uaexacell1 successfully created

CREATE KEYCreates and displays random key for use in assigning client keys.

CellCLI> CREATE KEY1820ef8f9c2bafcd12e15ebfe267abadCellCLI>

CREATE QUARANTINE quarantineType=<“SQLID” or “DISK REGION” or \“SQL PLAN” or “CELL OFFLOAD”> attributename=value

Define the attributes for a new quarantine entity

CellCLI> CREATE QUARANTINE quarantineType=”SQLID”, sqlid=”5xnjp4cutc1s8″Quarantine successfully created.CellCLI>

CREATE THRESHOLD <Thersold1> attributename=value

Defines conditions for generation of a metric alert.

CellCLI> CREATE THRESHOLD db_io_rq_sm_sec.db123comparison=’>’, critical=120Threshold db_io_rq_sm_sec.db123 successfully createdCellCLI>

DELETING the Exadata Storage cell Objects (DROP)

The below mentioned cellcli commands will help you to remove the various objects on the exadata storage cell. Be carefully with “force” option since it can remove the object even though it is in use.

DROP ALERTHISTORY <ALER1>, <ALERT2>Removes the specific alert from the cell’s alert history.

CellCLI> DROP ALERTHISTORY 2Alert 2 successfully droppedCellCLI>

DROP ALERTHISTORY ALLRemoves all alert from the cell’s alert history.

CellCLI> DROP ALERTHISTORY ALLAlert 1_1 successfully droppedAlert 1_2 successfully droppedAlert 1_3 successfully droppedAlert 1_4 successfully droppedAlert 1_5 successfully droppedAlert 1_6 successfully dropped

DROP THRESHOLD <THERSOLD>Removes specific threshold from the cell

CellCLI> DROP THRESHOLD db_io_rq_sm_sec.db123Threshold db_io_rq_sm_sec.db123 successfully droppedCellCLI>

DROP THRESHOLD ALL Removes all threshold from the cell CellCLI> DROP THRESHOLD ALL

DROP QUARANTINE <quarantine1> Removes quarantine from the cell CellCLI> DROP QUARANTINE QADB1

DROP QUARANTINE ALLRemoves all the quarantine from the cell

CellCLI> DROP QUARANTINE ALL

DROP GRIDDISK <Griddisk_Name>Removes the specific grid disk from the cell

CellCLI> DROP GRIDDISK UADBDK1GridDisk UADBDK1 successfully droppedCellCLI>

DROP GRIDDISK ALL PREFIX=<GRIDDISK_STARTNAME>

Removes the set of grid disks from the cell by using the prefix

CellCLI> DROP GRIDDISK ALL PREFIX=UAFLSHDBGridDisk UAFLSHDB_FD_00_uaexacell1 successfully droppedGridDisk UAFLSHDB_FD_01_uaexacell1 successfully droppedGridDisk UAFLSHDB_FD_02_uaexacell1 successfully droppedGridDisk UAFLSHDB_FD_03_uaexacell1 successfully droppedGridDisk UAFLSHDB_FD_04_uaexacell1 successfully droppedGridDisk UAFLSHDB_FD_05_uaexacell1 successfully dropped

DROP GRIDDISK <GRIDDISK> ERASE=1pass Removes the specific grid disks from the cell and Performs secure data

CellCLI> DROP GRIDDISK UADBPROD_CD_DISK10_uaexacell1 ERASE=1pass

deletion on the grid diskGridDisk UADBPROD_CD_DISK10_uaexacell1 successfully droppedCellCLI>

DROP GRIDDISK <GRIDDISK> FORCEDrops grid disk even if it is currently active.

CellCLI> DROP GRIDDISK UADBPROD_CD_DISK08_uaexacell1 FORCEGridDisk UADBPROD_CD_DISK08_uaexacell1 successfully dropped

DROP GRIDDISK ALL HARDDISKDrops griddisks which are created on top of hardisk

DROP GRIDDISK ALL HARDDISK

Modifying the Exadata Storage cell Objects (ALTER)The below mentioned commands will help you to modify the cell attributes and various objects setting. ALTER command will be used to perform the start/stop/restart the MS/RS/CELLSRV services as well.

ALTER ALERTHISTORY 123 examinedby=<user_name>

Sets the examinedby attribute of alerts ALTER ALERTHISTORY 123 examinedby=lingesh

ALTER CELL RESTART SERVICES ALL All(RS+CELLSRV+MS) services are restarted CellCLI>ALTER CELL RESTART SERVICES ALL

ALTER CELL RESTART SERVICES < RS | MS | CELLSRV >

To restart specific services

CellCLI>ALTER CELL RESTART SERVICES RS

CellCLI>ALTER CELL RESTART SERVICES MS

CellCLI>ALTER CELL RESTART SERVICES CELLSRV

ALTER CELL SHUTDOWN SERVICES ALL All(RS+CELLSRV+MS) services will be halted CellCLI>ALTER CELL SHUTDOWN SERVICES

ALTER CELL SHUTDOWN SERVICES < RS | MS | CELLSRV >

To shutdown specfic service

CellCLI>ALTER CELL SHUTDOWN SERVICES RS

CellCLI>ALTER CELL SHUTDOWN SERVICES MS

CellCLI>ALTER CELL SHUTDOWN SERVICES CELLSRV

ALTER CELL STARTUP SERVICES ALL All(RS+CELLSRV+MS) services will be started CellCLI>ALTER CELL STARTUP SERVICES

ALTER CELL STARTUP SERVICES < RS | MS | To start specific Service CellCLI>ALTER CELL STARTUP SERVICES RS

CELLSRV >CellCLI>ALTER CELL STARTUP SERVICES MS

CellCLI>ALTER CELL STARTUP SERVICES CELLSRV

ALTER CELL NAME=<Name>To Set the Name/Re-name to the Exadata Storage Cell

CellCLI> ALTER CELL NAME=UAEXACELL1

Cell UAEXACELL1 successfully altered

CellCLI>

ALTER CELL flashCacheMode=WriteBack

To Modify the flashcache mode to writeback from writethrough. To perform this,You need to drop the flashcache & Stop the cellsrv .Then you need to create the new Flashcache

CellCLI> DROP flashcache

Flash cache UAEXACELL1_FLASHCACHE successfully dropped

CellCLI>

CellCLI> ALTER CELL SHUTDOWN SERVICES CELLSRV

Stopping CELLSRV services…

The SHUTDOWN of CELLSRV services was successful.

CellCLI>

CellCLI> ALTER CELL flashCacheMode=WriteBack

Cell UAEXACELL1 successfully altered

CellCLI>

CellCLI> CREATE FLASHCACHE celldisk=”FD_00_uaexacell1,FD_01_uaexacell1″, size=500M

ALTER CELL interconnect1=<Network_Interface> To set the network interface for cell stroage. CellCLI> ALTER CELL INTERCONNECT1=eth1

A restart of all services is required to put new network configuration into effect. MS-CELLSRV communication

may be hampered until restart.Cell UAEXACELL1 successfully altered

ALTER CELL LED OFF The chassis LED is turned off. CellCLI> ALTER CELL LED OFF

ALTER CELL LED ON The chassis LED is turned on. CellCLI> ALTER CELL LED ON

ALTER CELL smtpServer='<SMTP_SERVER>’ Set the SMTP serverCellCLI> ALTER CELL smtpServer=’myrelay.unixarena.com’

ALTER CELL smtpFromAddr='<[email protected]>’

Set the Email From AddressCellCLI> ALTER CELL smtpFromAddr=’[email protected]’

ALTER CELL smtpToAddr='<[email protected]>’

Send the alrets to this Email AddressCellCLI> ALTER CELL smtpToAddr=’[email protected]’

ALTER CELL smtpFrom='<myhostname>’ Alias host name for email CellCLI> ALTER CELL smtpFrom=’uaexacell1′

ALTER CELL smtpPort=’25’ Set the SMTP port CellCLI> ALTER CELL smtpPort=’25’

ALTER CELL smtpUseSSL=’TRUE’ Make the smtp to use SLL CellCLI> ALTER CELL smtpUseSSL=’TRUE’

ALTER CELL notificationPolicy=’critical,warning,clear’

Send the alrets for critical,warning and clearCellCLI> ALTER CELL notificationPolicy=’critical,warning,clear’

ALTER CELL notificationMethod=’mail’ Set the notification method as email CellCLI> ALTER CELL notificationMethod=’mail’

ALTER CELLDISK <existing_celldisk_name> name='<new_cell_name>’,

Modify’s the celldisk name

CellCLI> ALTER CELLDISK CD_DISK00_uaexacell1 name=’UACELLD’, comment=’Re-named for UnixArena’

comment='<comments>’ CellDisk UACELLD successfully altered

ALTER CELLDISK ALL HARDDISK FLUSH Dirty blocks for all harddisk will be flushed CellCLI> ALTER CELLDISK ALL HARDDISK FLUSH

ALTER CELLDISK ALL HARDDISK FLUSH NOWAITAllows alter command to complete while flush operation continues on all harddisks

CellCLI> ALTER CELLDISK ALL HARDDISK FLUSH NOWAIT

Flash cache flush is in progress

CellCLI>

ALTER CELLDISK ALL HARDDISK CANCEL FLUSHPrevious flush operation on all harddisk will be terminated

CellCLI> ALTER CELLDISK ALL HARDDISK CANCEL FLUSH

CellDisk CD_DISK02_uaexacell1 successfully altered




ALTER CELLDISK <CELLDISK> FLUSH Dirty blocks for specific celldisk will be flushed CellCLI> ALTER CELLDISK

ALTER CELLDISK <CELLDISK> FLUSH NOWAITAllows alter command to complete while flush operation continues on specific celldisk

CellCLI> ALTER CELLDISKNOWAIT

Flash cache flush is in progress

ALTER FLASHCACHE ALL size=<size> Resize the all Flash celldisks to specified size ALTER FLASHCACHE ALL size=100G

ALTER FLASHCACHE ALL All the flashsdisks will be assigned to Flashcache

CellCLI> ALTER FLASHCACHE ALL

Flash cache uaexacell1_FLASHCACHE altered successfully

ALTER FLASHCACHECELLDISK='<Flashcelldisk1>,<Flashcelldisk2>’

The specified Flashcell disks be assigned to Flashcache &

CellCLI> ALTER FLASHCACHE CELLDISK=’FD_09_uaexacell1,FD_04_uaexacell1′

other flashdisks will be removedFlash cache uaexacell1_FLASHCACHE altered successfully

ALTER FLASHCACHE ALL FLUSH Dirty blocks for all Flashdisks will be flushed CellCLI> ALTER FLASHCACHE ALL

ALTER FLASHCACHE ALL CANCEL FLUSHPrevious flush operation on all Flashdisk will be terminated

CellCLI> ALTER FLASHCACHE ALL CANCEL FLUSH


ALTER FLASHCACHE ALL FLUSH NOWAIT Allows alter command to complete while flush operation

CellCLI> ALTER FLASHCACHE ALL FLUSH NOWAIT

continues on all the flash celldisk Flash cache flush is in progress

ALTER FLASHCACHE CELLDISK=<FLASH-CELLDISK> FLUSH

Dirty blocks for specific flash celldisk will be flushed

CellCLI> ALTER FLASHCACHE CELLDISK=FD_04_uaexacell1 FLUSH


ALTER FLASHCACHECELLDISK=<FLASH-CELLDISK> CANCEL FLUSH

Previous flush operation on specific flash celldisk will be terminated

CellCLI> ALTER FLASHCACHE CELLDISK=FD_04_uaexacell1 CANCEL FLUSH


Do not modify the Exadata Storage cell configuration without notifying oracle support.

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