| Property | Description |
|---|---|
| Parameter type | Integer |
| Default value | If CLUSTER_DATABASE is set to false, then 1
If
|
| Modifiable | No |
| Range of values | Any nonzero value |
| Basic | No |
| Oracle RAC | Multiple instances should have the same value. |
CLUSTER_DATABASE_INSTANCES is an Oracle RAC parameter that specifies the number of instances that are configured as part of the cluster database. 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.
Oracle uses the value of this parameter to compute the default value of the LARGE_POOL_SIZE parameter when the PARALLEL_AUTOMATIC_TUNING parameter is set to true. Note that the PARALLEL_AUTOMATIC_TUNING parameter has been deprecated.
See Also:
Oracle Database Performance Tuning Guide for more information on tuning parallel execution
Oracle Real Application Clusters Administration and Deployment Guide for information on Real Application Clusters