Configure an Oracle Java Cloud Service Instance for an Oracle RAC Database
This topic does not apply to Oracle Cloud Infrastructure. Identify the Cloud Infrastructure Used by a Service Instance.
Note:
This task is applicable only to service instances that meet all of the following criteria:-
You created the service instance in an Oracle Cloud Infrastructure Classic region.
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When you created the service instance, you selected the software edition Enterprise Edition with Coherence .
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You associated the service instance with an Oracle Database Cloud Service deployment that is RAC-enabled.
Oracle Java Cloud Service provisions GridLink data sources in your Oracle WebLogic Server domain to connect to the selected Oracle Database cluster. GridLink provides dynamic load balancing and failover across the nodes in an Oracle Database cluster, and also receives notifications from the cluster when nodes are added or removed. To fully take advantage of these capabilities, Oracle recommends that you make the following modifications to your database and service instance:
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Create an Oracle Database service that supports Cluster Ready Services (CRS) and the Oracle Notification Service (ONS). These services monitor the status of resources in the database cluster and generate notifications when a status changes.
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Update WebLogic Server to connect to this new database service using the Single Client Access Name (SCAN) port 1521. The SCAN service provides WebLogic Server with the specific location of an available database node. WebLogic Server then connects to a specific database node using port 1522.
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If you did not assign an IP network to the database deployment, the database service redirects requests to the database nodes’ public IP addresses. You must create an access rule for the database deployment that permits traffic from the WebLogic Server nodes to port 1522.
Follow these steps: