CLUSTER_DATABASE_INSTANCES Parameter Mismatch When Manually Adding A New Instance (Doc ID 420780.1)

Last updated on AUGUST 25, 2011

Applies to:

Oracle Server - Enterprise Edition - Version: 10.1.0.2 to 10.2.0.1 - Release: 10.1 to 10.2
Information in this document applies to any platform.

Symptoms

Oracle recommends that the Database Configuration Assistant (DBCA) is used to add additional instances to existing RAC databases.  However, there may be times when an instance will be added manually.  In those cases, it is necessary to take the value for the CLUSTER_DATABASE_INSTANCES parameter into account.  Failing to do so will result in failure to mount the new instance and the occurrence of the following error in that instance's alert.log:

lmon registered with NM - instance id 6 (internal mem no 5)
Warning: cluster_database_instances (5) of node 0 is <= my node id (5)
cluster_database_instances parameter mismatch!
Instance 0 = 5, mine = 6
This instance has not mounted yet. Exiting!

Cause

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