CLUSTER_DATABASE_INSTANCES Parameter Mismatch When Manually Adding A New Instance
(Doc ID 420780.1)
Last updated on MARCH 07, 2019
Applies to:Oracle Database - Enterprise Edition - Version 10.1.0.2 to 10.2.0.1 [Release 10.1 to 10.2]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Information in this document applies to any platform.
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:
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!
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