Monday, September 12, 2011

LOCAL_LISTENER on oracle 11gR2

DBCA no longer sets the value for LOCAL_LISTENER. When Oracle Clusterware starts the database resource, it updates the instance parameters. The LOCAL_LISTENER is set to the virtual IP endpoint of the local node listener address. You should not modify the setting for LOCAL_LISTENER. New installation instances only register with Single Client Access Name (SCAN) listeners as remote listeners. SCANs are virtual IP addresses assigned to the cluster, rather than to individual nodes, so cluster members can be added or removed without requiring updates of clients served by the cluster. Upgraded databases will continue to register with all node listeners, and additionally with the SCAN listeners.

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