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Oracle® Database Reference
11g Release 1 (11.1)

B28320-03
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CLUSTER_DATABASE_INSTANCES

Property Description
Parameter type Integer
Default value 1
Modifiable No
Range of values Any nonzero value
Basic No
Real Application Clusters Multiple instances must have the same value.

CLUSTER_DATABASE_INSTANCES is a Real Application Clusters parameter that specifies the number of instances that are configured as part of your cluster database. You must set this parameter for every instance. Normally you should set this parameter to the number of instances in your Real Application Clusters 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.

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