The document discusses Oracle WebLogic Server multitenancy. It introduces domain partitions as administrative and runtime subsets of a domain that provide isolation for applications and resources. Partitions share OS, JVM, and WebLogic resources in an isolated manner. The document outlines key multitenancy concepts and demonstrates how partitions can be exported, imported, and migrated. It also shows how resource management policies like heap size triggers can be configured independently for each partition.

1. WebLogic Multitenancy
• WLSDM & JSL Product Manager
• WLSDM Community Leader
@mfevzikorkutata
Middleware & SOA Consultant
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2. Agenda
• About WebLogic 12cR2
• Multinetancy &
Microcontainers &
Partitions…
• Demo
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3. WebLogic Server 12c R2
Portable to Cloud
Continuously Available
Multitenant
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4. WebLogic Server Multitenant
Microcontainer
Portability for DevOps
Domain
Consolidation
Secure/Isolated
Multitenant Java
4
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5. Oracle WebLogic Server Multitenancy Concepts
• Key new concept is the domain partition
– Administrative and runtime subset of a domain
– Microcontainer for apps and resources
• Partitions share OS, JVM, WLS with isolation
– JVM: Heap, CPU, file descriptors
– Security: Shared or dedicated security realms
– Administration: Start/stop, admin role scoping
• Partitions are pluggable and portable
– Can be exported, imported and migrated
Container Database
PDB1 PDB2
Virtual Host
App
App
JMS
Datasource
JNDI
Virtual Host
App
App
JMS
Datasource
JNDI
Partition 1 Partition 2
Web Tier
Managed Server/Cluster
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6. WLS
Microcontainer
-ize
Export Import
WebLogic Server 12c R2 Partitions
My “BUZZY” word! ®
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7. I mean it 
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“microcainterize Vs. “containerize”

8. 8
Simplicity and Flexibility
Deploying SaaS Applications – Resource Group Templates
ContainerDatabase
WebLogic Server
OverridesPartition 1 – Bayland Urgent Care
Virtual
Target 1
App App JMS
Data
Source
OverridesPartition 2 – Valley Health
Virtual
Target 2
App App JMS
Data
Source
MedRec Resource
Group Template
App Deployment
App Deployment
JMS
Mail Session
JDBC System
Resource
Virtual Target 1
• Host:port
• URI
• Targets
Resource Group
Resource Group
Bayland PDB
Valley Health
PDB
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9. Partition Resource Management
9
Heap Example JVM
Partition 1 Partition 1 Partition 3 Partition 4 <name>heap-level-1</name>
<heap>
<trigger>
<name>1.25GB</name>
<value>1250</value>
<action>notify</action>
</trigger>
<trigger>
<name>1.5GB</name>
<value>1500</value>
<action>slow</action>
</trigger>
<trigger>
<name>2GB</name>
<value>2000</value>
<action>stop</action>
</trigger>
</heap>
1.25
1.5
2.0
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10. Partition Resource Management
10
Heap Example JVM
Partition 1 Partition 1 Partition 3 Partition 4 <name>heap-level-1</name>
<heap>
<trigger>
<name>1.25GB</name>
<value>1250</value>
<action>notify</action>
</trigger>
<trigger>
<name>1.5GB</name>
<value>1500</value>
<action>slow</action>
</trigger>
<trigger>
<name>2GB</name>
<value>2000</value>
<action>stop</action>
</trigger>
</heap>
1 GB
0.5 GB
0.75 GB
0.5 GB
1.25
1.5
2.0
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11. Partition Resource Management
11
Heap Example JVM
Partition 1 Partition 1 Partition 3 Partition 4 <name>heap-level-1</name>
<heap>
<trigger>
<name>1.25GB</name>
<value>1250</value>
<action>notify</action>
</trigger>
<trigger>
<name>1.5GB</name>
<value>1500</value>
<action>slow</action>
</trigger>
<trigger>
<name>2GB</name>
<value>2000</value>
<action>stop</action>
</trigger>
</heap>
1.26 GB
0.5 GB
0.75 GB
0.5 GB
Crossing 1.25 GB
triggers “notify” action
1.25
1.5
2.0
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12. Partition Resource Management
12
Heap Example JVM
Partition 1 Partition 1 Partition 3 Partition 4 <name>heap-level-1</name>
<heap>
<trigger>
<name>1.25GB</name>
<value>1250</value>
<action>notify</action>
</trigger>
<trigger>
<name>1.5GB</name>
<value>1500</value>
<action>slow</action>
</trigger>
<trigger>
<name>2GB</name>
<value>2000</value>
<action>stop</action>
</trigger>
</heap>
1.51 GB
0.5 GB
0.75 GB
0.5 GB
Crossing 1.5 GB triggers
“slow” action
1.25
1.5
2.0
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13. Partition Resource Management
13
Heap Example JVM
Partition 1 Partition 1 Partition 3 Partition 4 <name>heap-level-1</name>
<heap>
<trigger>
<name>1.25GB</name>
<value>1250</value>
<action>notify</action>
</trigger>
<trigger>
<name>1.5GB</name>
<value>1500</value>
<action>slow</action>
</trigger>
<trigger>
<name>2GB</name>
<value>2000</value>
<action>stop</action>
</trigger>
</heap>
2.05 GB
0.5 GB
0.75 GB
0.5 GB
Crossing 2 GB triggers
“stop” action
1.25
1.5
2.0
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14. WLS
Multi-
tenancy
DEMO
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15. Result: PaaS-4-SaaS
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OTD
(Traffic Director)
WebLogic MT
Pluggable
Partitions
Oracle
Pluggable
Database
Bandwidth/HA
Management
JVM/Resource
Instance Management
DB Container
Management

16. DEMO-2: WLS “Lift & Shift” to JCS
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• https://youtu.be/hjJbq1Dacfk