oracle weblogic server 12c: seamless oracle database integration (with nec, openworld, 2014)

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Oracle WebLogic Server 12c:Seamless Oracle Database Integration

Oracle WebLogic Product ManagementNEC Corporation


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Program Agenda

Introduction

WebLogic 12c integration to DB12c features

Planned and Unplanned outages WLS and AC

NEC tests and results

What is coming in WebLogic 12.2.1

Q&A

1

2

3

4

5

6


Introduction to NEC

Yuki Moriyama,Senior ManagerNEC Corporation

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WebLogic 12c integration to Oracle DB12c features


• High Availability with Application Continuity

• Scalability with Mutitenancy at the Database Tier

• Scalability with Database Resident Connection Pooling

• HA and DR with Global Data Services

Integration

Oracle WebLogic Server Integration with Oracle Database 12c

Application Continuity

Database Resident

Connection Pool

Global Data Services

Multitenant Database


Insert Picture Here

• Replays WebLogic Application work on recoverable errors

• Masks many hardware, software, network, storage errors and outages

• Oracle RAC, RAC One, & Active Data Guard

• Improves end-user experience

High Availability

Application Continuity


PDB1 PDB 2 PDB 3 PDB 4 PDB 5

Container Database

• Consolidate all Databases into one container Database.

• Pluggable databases appear as regular databases to WebLogic

• Database Data isolation

• Better use of resources at the database tier.

Scalability and Better Resource Utilization

WebLogic Integration with Multitenant Database

Data-Source

1

WebLogic Domain

Data-Source

2

Data-Source

3

Data-Source

4

WebLogic Domain

Data-Source

5

Data-Source

6

Container Database

PDB 6


DRCP

WebLogic

Busy Idle

Database 12c

WebLogic WebLogic WebLogic

• Better sharing and more efficient use of Database resources

• DRCP pools Database Sessions/Connections

• Added WebLogic deployments use the same number of Database Sessions/Connections

Improved DB Resource Utilization

Database Resident Connection Pooling


Database Resident Connection Pooling

• DRCP pools database server processes and sessions

• The Connection Broker chooses the connection and hands it off to WLS.

• When the pooled servers are in use, they are equivalent to dedicated sessions.

• Releasing resources leaves the server processes intact, but no longer associated with a connection

WebLogic WebLogic

WebLogic WebLogic

DRCP

Pooled Servers

Connection Broker

Handoff

Handoff

AfterHandoffBefore

Handoff


Australia Service

WebLogicApplications

South America

WebLogicApplications

Australia

SA Service

Australia Service

• Runtime load balancing of Global Services

• WebLogic reconnects transparently to the available services providing business continuity.

• Failover across the Data Centers

Global Data Services

High Availability of Global Services


FeatureWLS 10.3.6/12.1.1/12.1.2

WLS 10.3.6/12.1.

1 WLS 12.1.2 WLS 10.3.6/12.1.1 WLS 12.1.2

11g drivers 11gR2 DB

11g drivers 12c DB

12c drivers 11gR2 DB

12c drivers 11gR2 DB

12c drivers 12c DB

12c drivers 12c DB

Application Continuity No No No NoYes

(Active GridLink only, no XA)

Yes (Active GridLink and

Generic, no XA)

Multitenant Database Support No Yes No No Yes Yes

Multitenant Database w/Dynamic Switching No No No No No Yes

(No XA)

Database Resident Connection pooling No No No Yes No Yes

Global Database Services (GDS) No Yes (Active GridLink) No No Yes

(Active GridLink)Yes

(Active GridLink)

Most Complete DB 12c Support in WebLogic 12.1.2


Fault Handling

At database outages 5 problems confront users and applications

1. Fault detection2. Recovery within response time targets3. Error Handling 4. Outcome of in-flight work5. Continuation of in-flight work

Maximum Application Availability


Fast Application Notification

• Down – received in low ms to invoke failover

• Planned Down – drains sessions for planned maintenance with no user interruption whatsoever

• Up – Re-allocates sessions when services resume

• Load % - Advice to balance sessions for RAC locally and GDS globally

• Affinity - Advice when to keep conversation locality

Proven since 10g

12c: Auto-Configuration + Global Data Services


Unplanned Down Events

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Phases in Application Continuity

1 – Runtime Operation

•Demarcates database requests

• Tracks database operations and results

• Decides if an operation can or can not be replayed

2 – Reconnect

• Checks request has replay enabled (and not disabled by operations)

• Reserves a new session

3 – Replay

• Replays tracked operations

• Continues replay, if user visible results match, based on validations

• Continues request


WebLogic Server Integration to Application Continuity

• WebLogic DataSource marks request boundaries

• Database calls are “remembered” through commit

• On failure, the invalid DB session is replaced

• If it is safe and same results are returned to the application, operations are replayed

• Transparent to application!

RACNode 2

Listener

ONS

RACNode 3

Listener

ONS

RAC Cluster

Generic, Active GridLink Data Source

WebLogic Server

Application

RACNode 1

Listener

ONS

1. Request

2. Request

RACNode 1

Listener

ONS

3. Node 1 Down

RACNode 1

Listener

ONS

4. Init Callback

5. Replay

6. Response

7. Response


Planned Down Events

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Transparent Planned Outages with Active GridLink• When WLS receives FAN events

indicating Planned Down it will

– Redirect new work to other RAC instances

– Clean all idle connections in the pool

– Connections borrowed by applications are marked for cleanup

– Wait for work to complete ( drain work)

– After work is complete clean up connections

Get connection

Application Instance2

RAC DB

Instance1

Instance3

WebLogic Server

Instance Down

Get new connection

Drain Work

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Transparent Planned Outages Across Data Centers

WebLogic Server

Webogic Domain

Active GridLink

RAC Node 1 RAC Node 2 RAC Node 3 RAC Node 1 RAC Node 2 RAC Node 3

Transaction DataJMS Store Data

Application Data


Application Data

DataGuard

SCAN

RAC Cluster RAC Cluster

•Do a graceful shutdown of the entire RAC cluster.•A FAN event is sent to Active GridLink.•Active GridLink will allow work to drain. •With no configuration changes required to WLS and no interruption to applications failover to secondary DB.•Upgrade primary DB•In the same fashion failback.

Primary Secondary


NEC’s WebLogic/RACIntegration Test

Yuuki Makita,Senior Software EngineerNEC Corporation

© NEC Corporation 2014

Purpose of Our Test

High AvailabilityHigh Availability□ No service down in failure□ No service stop for

maintenance

NEC’s expectation to new functions

Easy to UseEasy to Use □ No code change□ No additional cost

Customer's request to NEC


…

Oracle WebLogic Server 12c

Test items1. Unplanned Outages

2. Planned Outages Node maintenance RAC maintenance

3. MeasuringApplication Continuity Overhead

Varioushttpworkload

Oracle Database RAC 12cData Guard 12c

Active GridLink

andApplication Continuity

DataGuard

Test Items and Environment

Application Server

Database Servers

TEST RESULTSWebLogic/RAC Integration Test


Test Items

1. Unplanned Outages

2. Planned Outages

3. Measuring Application Continuity Overhead


The Expectation of Unplanned Outages Test

New technology:RAC 12c +

Active GridLink

Current technology:RAC 11gR2 +

Generic Datasource

SQL

Replay

SQL

• Long wait for Timeout• Error returns

• Prompt failure detection• No error and SQL replay

:: FAN

(Fast Application Notification)

:

measured measured


Result of Unplanned Outages Test

1

2

WebLogic3,4

Oracle RAC

Application receives errors.

No error and SQL replay.

Public network failure1

Interconnect network failure2

Process down3

Process hang-up4

RAC 12c +Active GridLink

RAC 11gR2 +Generic Datasource

…can't detect in some situation.

30 sec

1 sec

1 sec

30 sec

1 sec

900sec (timeout)

Case:


Solution for Process Hang-up Detection

Oracle RAC

Oracle RAC

WebLogic

FAN

EXPRESSCLUSTER

Process hang-up4

No error and SQL replay.

118 sec

EXPRESSCLUSTER

Application Continuity replays with no errorby NEC EXPRESSCLUSTER

Replay

SQLDetect hang-up and force OS shutdown

Detect node down and send FAN

hang-up

failure RAC server

available RAC server

RAC 12c + Active GridLinkwith EXPRESSCLUSTER


Test Items


2. Planned Outages



The Expectation of Planned Outages Test▌ Following two type of maintenance are tested.

We expect both case of maintenance are free from application stop and error. RAC shutdown

Grid Infrastructure maintenance Storage maintenance

Primary

Standby

Active

Active

Multi-RAC(Data Guard)

Node shutdown Applying Patch Set Update Configuration change Hardware maintenance

MaintenanceMaintenance DataGuard


Results of Planned Outages Test

Both case of maintenance are freefrom application stop and error

120sec< 1sec

FAN

Connection retry toupgraded cluster

FAN

RAC sends FANwhen service stops.

DataGuard

Upgraded

Node shutdown RAC shutdown


Details of Node Shutdown Case

Node#1

WebLogic

Only Node#2 Both Nodes

FANFAN

Node#2

Both Nodes

StopService

1 StopInstance

3 RestartInstance

4: request and response

No need to stop application by Active GridLink

Maintenance

RestartService

5

DrainSession

2

<1sec <1sec


Details of RAC Shutdown Case

FAN

WebLogic

Stop Service1

FAN

StartInstance

120 secMaintenance

No need to stop application by Active GridLink and DataGuard

Connection retry by JDBC(RAC 12.1.0.2 new function)

Primary

Standby Primary

Standby

Swichover

RAC#1

RAC#2

Updated

Maintenance

4 StartService

5

2

3

: request and response

DrainSession



2. Planned Outages


Test Items


Measuring Application Continuity Overhead

▌We expected that Application Continuity overhead is small.

WebLogicOracle RAC

Application: Medrec(sample application of WebLogic)

Select andUpdate

Compared Test Cases:• Application Continuity ON OFF

Measured items:Response time, ThroughputCPU, Memory, Network I/O, Disk I/O

Client

25 threads10 min


Result of Application Continuity Overhead Test

■ AC OFF■ AC ON

select & update05

101520

Response time (ms)

AP server CPU DB server CPU0.00

0.04

0.08

0.12

CPU per one transaction(%)

Memory (number of GC)0.000.050.100.150.200.25

Memory per one transaction

select & update0

200

400

600

Throughput (tx/s)

Application continuity overhead is very small.

5% 5%

8%

3%

2%

SUMMARYWebLogic/RAC Integration Test


Summary of the Test

No service down in failure No service stop for

maintenance

No code change No additional cost

High AvailabilityHigh Availability

Easy to UseEasy to Use

NEC EXPRESSCLUSTER is necessary in some hang-up cases.

2. Planned Outages



NEC believes that high availability systemwill be easily built by WebLogic 12c and Database 12c.


Future Plans

▌Making best practiceDetailed test

• Workload characteristics suitable for Application Continuity• Assessment, Sizing

Actual customer case▌Test in future

Active GridLink and RAC with clustering of WebLogic for system availability.


WebLogic Server Roadmap

2009-2010 2011 2012 2013 2014 2015

WebLogic 11gR1 (10.3.1-6)

Oracle FMW 11g & Apps Manageability, Active GridLink,

Messaging, Coherence, OVAB Engineered Systems, Cloud JDK 6 and JDK 7 (WLS 10.3.6)

WebLogic 12c (12.1.2)

FMW 12c Infrastructure Mission Critical Cloud Platform Native Cloud Management Modern Development Platform JDK 7

WebLogic 12c (12.1.1)

Java EE 6 Developer Productivity, Oracle Traffic

Director, Disaster Recovery JDK 6 and JDK 7

WebLogic 12c (12.1.3) – June 2014 FMW 12c Infra, SOA, BPM, ODI XATransaction without Tlog feature with one participant TM Mission Critical Cloud Platform Native Cloud Management JDK 7 (post-GA JDK 8)

WebLogic 12cR2 (12.2.1) – CY2015

FMW 12c Platform WLS MultitenancyONS thread and socket optimizations Exalogic, HA and MAA XATransaction without Tlog feature with multiple participant TMs JDK 8


WebLogic Server 12.2.1 Multitenancy Concepts

• Introduce domain partition into WebLogic domains

• Apps and resources deployed for each partition (tenant)

• No application changes required

• Appropriate levels of end to end partition isolation:

• WebLogic infrastructure is shared among partitions

Managed Server/Cluster

Container Database

PDB1 PDB2

Virtual Host

App

App

JMS

Datasource

JNDI

Virtual Host

App

App

JMS

Datasource

JNDI

Partition 1 Partition 2

Web Tier


WebLogic 12.2.1 – JTA and Database Integration

• JTA and High Availability – Support “XATransactions without TLOG”

option for multi-TM participants– Expand support for DR configurations

• Density for GridLink deployments– ONS is reducing the number of sockets and

threads needed to manage FAN events.

• Application Continuity– Optimize connection harvesting on down

events

DeterminerRM 1

RM 2

TLog

4. ok

2. ok

8. okWLS Server Coordinator

(TM)

3. prepare

7. commit

1. prepare

6. ok

5. commit

No Transaction entry

WLS Server SubCoordinator

(TM)

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LLB/OTD

MS1 MS2 MS3

WLS Cluster 2MS1 MS2 MS3

WLS Cluster 1WLS

Admin

WebLogic Domain

C C CCoherence

File Store(Site Local Binaries, Config Data)

OHSWeb Tier

Management Console

Global Load Balancer

LLB/OTD

MS1 MS2 MS3

WLS Cluster 2MS1 MS2 MS3

WLS Cluster 1WLS

Admin

WebLogic Domain

C C CCoherence

File Store(Site Local Binaries, Config Data)

OHSWeb Tier

File Replication Technology

RAC Node 1 RAC Node 2 RAC Node 3 RAC Node 1 RAC Node 2 RAC Node 3


Application Data

Transaction Data

JMS Store DataApplication Data

Golden Gateor DataGuard

Site 1 Site 2

Session Replication

Active GridLink and SCAN

WebLogic 12.2.1 MAA - Active-Active Use Case

RAC Cluster RAC Cluster

oracle weblogic server 12c: seamless oracle database integration (with nec, openworld, 2014)

Software

oracle andor

oracle db12c featurescopyright

outages oracle rac

sole discretion of oracle

weblogic integration

weblogic deploymentsuse

xamultitenant database

db12c featuresplanned