Oracle WebLogic Server 12c: Seamless Oracle Database Integration (with NEC, OpenWorld, 2014)

Oracle WebLogic Server 12c:
Seamless Oracle Database Integration
Copyright © 2014 Oracle and/or its affiliates. All rights reserved. |
Oracle WebLogic Product Management
NEC Corporation

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information purposes only, and may not be incorporated into any contract. It is not a
commitment to deliver any material, code, or functionality, and should not be relied upon
in making purchasing decisions. The development, release, and timing of any features or
functionality described for Oracle’s products remains at the sole discretion of Oracle.
Oracle Confidential – Internal/Restricted/Highly Restricted 3

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 Manager
NEC Corporation

WebLogic 12c integration to Oracle DB12c features
Oracle Confidential – Internal/Restricted/Highly Restricted

Oracle WebLogic Server Integration with Oracle Database 12c
Integration
• 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
Application
Continuity
Database
Resident
Connection
Pool
Global Data
Services
Multitenant
Database

High Availability
• 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

WebLogic Integration with Multitenant Database
WebLogic Domain
PDB1 PDB 2 PDB 3 PDB 4 PDB 5
Container Database
Scalability and Better Resource
Utilization
• 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.
Data-
Source
1
Data-
Source
2
Data-
Source
3
Data-
Source
4
WebLogic Domain
Data-
Source
5
Data-
Source
6
Container Database
PDB 6

Database Resident Connection Pooling
WebLogic WebLogic
WebLogic WebLogic
DRCP
Busy
Idle
Database 12c
Improved DB Resource
Utilization
• 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

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
After
Before Handoff
Handoff

Australia
Service
WebLogic
Applications
South America
WebLogic
Applications
Australia
SA Service
Australia
Service
Global Data Services
High Availability of Global
Services
• Runtime load balancing of
Global Services
• WebLogic reconnects
transparently to the available
services providing business
continuity.
• Failover across the Data
Centers

Most Complete DB 12c Support in WebLogic 12.1.2
Feature
WLS 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 No
Yes
(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)

Fault Handling
Maximum Application Availability
At database outages 5 problems confront
users and applications
1. Fault detection
2. Recovery within response time targets
3. Error Handling
4. Outcome of in-flight work
5. Continuation of in-flight work

Proven since 10g
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
12c: Auto-Configuration
+ Global Data Services

Unplanned Down Events

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
Application
WebLogic Server
1. Request
7. Response
Generic, Active GridLink Data Source
2. Request
Listener
Listener
ONS
ONS
RAC
Node 1
• 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!
Listener
ONS
RAC
Node 2
6. Response
Listener
ONS
RAC
Node 3
RAC Cluster
RAC
Node 1
3. Node 1
Down
4. Init Callback
5. Replay

Planned Down Events

Transparent Planned Outages with Active GridLink
• When WLS receives FAN events
indicating Planned Down it will
– Redirect new work to other RAC instances
Drain Work
– 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
RAC DB
Instance1
20
Get connection
Application Instance2
Instance3
WebLogic
Server
Instance
Down
Get new connection

Transparent Planned Outages Across Data Centers
WebLogic Server
Webogic
Domain
Active GridLink
SCAN
Transaction
JMSD aSttaore Data
Application Data
Transaction
JMS StoDraet aData
Application Data
•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.
RAC Node 1 RAC Node 2 RAC Node 3 RAC Node 1 RAC Node 2 RAC Node 3
DataGuard
RAC Cluster RAC Cluster
Primary Secondary
Copyright © 2014 Oracle and/or its affiliates. All rights reserved. | Oracle Confidential – internal only, Restricted | 21

NEC’s WebLogic/RAC
Integration Test
Yuuki Makita,
Senior Software Engineer
NEC Corporation

Purpose of Our Test
High Availability
Page 23 © NEC Corporation 2014
 NEC’s expectation to new
functions
□ No service down in failure
□ No service stop for
maintenance
Easy to Use
□ No code change
□ No additional cost
 Customer's request to NEC

© NEC Corporation 2014
…
Active
GridLink
Application
Continuity
Oracle WebLogic
Server 12c
Test items
1. Unplanned Outages
2. Planned Outages
 Node maintenance
 RAC maintenance
3.Measuring
Overhead
Various
http
workload
and
Data
Guard
Oracle Database RAC 12c
Data Guard 12c
Test Items and Environment
Application Server
Database Servers

WebLogic/RAC Integration Test
TEST RESULTS

Test Items
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
900sec (timeout)
1
Oracle RAC
2
WebLogic
3,4
Application
receives errors.
No error and
SQL replay.
1 Public network failure
2 Interconnect network failure
3 Process down
4 Process hang-up
RAC 12c +
Active GridLink
RAC 11gR2 +
Generic Datasource
1 sec
30 sec
1 sec
…can't detect in some situation.
30 sec
1 sec
Case:

Solution for Process Hang-up Detection
Application Continuity replays with no error
failure RAC server
SQL
by NEC EXPRESSCLUSTER
Oracle RAC
Oracle RAC
WebLogic
FAN
hang-up
EXPRESSCLUSTER
4 Process hang-up
No error and
SQL replay.
118 sec
EXPRESSCLUSTER
Replay
Detect hang-up
and force OS
shutdown
Detect node down
and send FAN
available RAC server
RAC 12c + Active GridLink
with 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
Standby
Primary
Active
Active
Multi-RAC
(Data Guard)
 Node shutdown
 Applying Patch Set Update
 Configuration change
 Hardware maintenance
Maintenance Maintenance Data
Guard

Results of Planned Outages Test
Both case of maintenance are free
from application stop and error
RAC sends FAN
when service stops.
FAN
< 1sec 120sec
Connection retry to
upgraded cluster
FAN
Data
Guard
Upgraded
 Node shutdown  RAC shutdown

Details of Node Shutdown Case
No need to stop application by Active GridLink
Both Nodes
WebLogic
Node#1
<1sec <1sec
2
: request and 4
response
Only Node#2 Both Nodes
FAN
FAN
Node#2
1 Stop
Stop
Service
3 Restart
Instance
Instance
Maintenance
Restart
Service
5
Drain
Session

Details of RAC Shutdown Case
No need to stop application by Active GridLink and DataGuard
Standby Primary
FAN
WebLogic
Stop Service
1
FAN
4 Start
Start
Instance
120 sec
Maintenance
Connection retry by JDBC
(RAC 12.1.0.2 new function)
Primary
Swichover
Standby
RAC#1
RAC#2
Updated
Maintenance
Service
5
2
3
: request and
response
Drain
Session

Test Items
2. Planned Outages

Measuring Application Continuity Overhead
▌We expected that Application Continuity overhead is small.
Client
25 threads
10 min
WebLogic
Oracle RAC
Select and
Update
Application: Medrec
(sample application of WebLogic)
Compared Test Cases:
• Application Continuity ON OFF
Measured items:
Response time, Throughput
CPU, Memory, Network I/O, Disk I/O

Result of Application Continuity Overhead Test
Application continuity overhead is very small.
Response time (ms)
20
15
10
5
5% 5%
CPU per one transaction(%)
0.12
0.08
0.04
■ AC OFF
■ AC ON
0
select & update
0.00
AP server CPU DB server CPU
Throughput (tx/s)
600
400
200
Memory per one transaction
0.25
0.20
0.15
0.10
0.05
0.00
Memory (number of GC)
0
select & update
8%
3%
2%

WebLogic/RAC Integration Test
SUMMARY

Summary of the Test
1.Unplanned Outages
 No service down in failure
 No service stop for
maintenance
 No code change
 No additional cost
High Availability
Easy to Use
NEC EXPRESSCLUSTER is
necessary in some hang-up cases.
2. Planned Outages
3. Measuring Application
Continuity Overhead
NEC believes that high availability system
will be easily built by WebLogic 12c and Database 12c.

Future Plans
▌Making best practice
 Detailed 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.

What is coming in WebLogic 12.2.1
Oracle Confidential – Internal/Restricted/Highly Restricted

WebLogic 12cR2 (12.2.1) – CY2015
 FMW 12c Platform
 WLS Multitenancy
ONS thread and socket optimizations
 Exalogic, HA and MAA
 XATransaction without Tlog feature
with multiple participant TMs
 JDK 8
2009-2010 2011 2012 2013 2014 2015
WebLogic Server Roadmap
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 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
Virtual Host
Web Tier
Partition 1 Partition 2
App
App
JMS
Datasource
Managed Server/Cluster
PDB1 PDB2
Container Database
JNDI
Virtual Host
App
App
JMS
Datasource
JNDI

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
Determiner
RM 1
RM 2
TLog
WLS Server
Coordinator
(TM)
No
Transaction
entry
WLS Server
SubCoordinator
(TM)

WebLogic 12.2.1 MAA - Active-Active Use Case
Site 1 Site 2
WebLogic Domain
WLS Cluster 1
WLS Cluster 2
MS1 MS2 MS3
Active GridLink and SCAN
Transaction Data
JMS Store Data
Application Data
Transaction Data
JMS Store Data
Application Data
Session
Replication
Copyright © 2014 Oracle and/or its affiliates. All rights reserved. | Oracle Confidential – internal only, Restricted | 47
LLB/OTD
WebLogic Domain
WLS Cluster 1
WLS Cluster 2
MS1 MS2 MS3
MS1 MS2 MS3
WLS
Admin
Coherence C C C
File Store
(Site Local Binaries, Config Data)
OHS
Web Tier
Management Console
Global Load Balancer
LLB/OTD
MS1 MS2 MS3
WLS
Admin
Coherence C C C
File Store
(Site Local Binaries, Config Data)
OHS
Web Tier
File Replication
Technology
RAC Node 1 RAC Node 2 RAC Node 3 RAC Node 1 RAC Node 2 RAC Node 3
Golden Gate
or DataGuard
RAC Cluster RAC Cluster

Oracle WebLogic Server 12c: Seamless Oracle Database Integration (with NEC, OpenWorld, 2014)

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