1.38 CLUSTER_DATABASE_INSTANCES

CLUSTER_DATABASE_INSTANCES is an Oracle RAC parameter that specifies the number of instances that are configured as part of the cluster database.

Property	Description
Parameter type	Integer
Default value	If CLUSTER_DATABASE is set to false, then 1 If CLUSTER_DATABASE is set to true, the number of configured Oracle RAC instances
Modifiable	No
Modifiable in a PDB	No
Range of values	Any nonzero value
Basic	No
Oracle RAC	Multiple instances should have the same value.

You must set this parameter for every instance. Normally you should set this parameter to the number of instances in your Oracle RAC environment. A proper setting for this parameter can improve memory use.

See Also:

• Oracle Database SQL Tuning Guide for more information about parallel execution

• Oracle Real Application Clusters Administration and Deployment Guide for information on Oracle Real Application Clusters