Database Reference
In-Depth Information
Database clustering
Shared dehydration is important for SOA Suite clustering.
Oracle Real Application
Clusters
(
Oracle RAC
) is one of the options for database clustering.
You can use Oracle Enterprise Manager Database Control for configuring Oracle
RAC. UsetheWebLogicconsoleforcreatingtherequireddatasources.Also, always
remembertouseamultidatasourcealongwithOracleRACandcreatedatasources
for each RAC node.
Create a JDBC multi pool using the WebLogic console and add individual data
sources to the multi pool. Ensure that all the Oracle nodes receive the traffic from
the SOA Suite. Use load balancing as the algorithm type while creating multi data
sources.
You can shut down one of the Oracle RAC nodes to ensure that a SOA Suite failover
connection for the secondary node(s) is enabled.
GridLink data source
Instead of using multi data source for configuring Oracle RAC, you can use Oracle
GridLink data source for connecting WebLogic to Oracle RAC. It is supported from
WebLogic Version 10.3.6 onwards. It is similar to using a proxy plugin for connecting
web servers (Apache, OHS, and so on) to WebLogic; you can use an
Oracle No-
tification Service
(
ONS
) for providing load balancing and failover for Oracle Data-
base RAC nodes.
You can use a GridLink data source for connecting WebLogic with multiple Oracle
RAC systems, as shown in the following diagram:
