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What Is Correct Setting for _px_numa_support_enabled for 12c Databases That Wish to Use NUMA? (Doc ID 1956463.1)

Last updated on FEBRUARY 21, 2024

Applies to:

Oracle Database Cloud Schema Service - Version N/A and later
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database Cloud Machine) - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Backup Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Information in this document applies to any platform.


We have two two-node RAC databases one at and one at that are intended to run using NUMA.
We have set the parameter "_enable_NUMA_support" to true on both databases, but when we list out the numa related parameters
We find that on the setting for "_px_numa_support_enabled" is TRUE, whereas on the value is FALSE.

Our question is:

Will this difference affect parallel executions differently between the two version? We set the NUMA parameter following MOS note 864633.1
which details the process for 11gR2 we could not find an equivalent note for 12c.


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