My Oracle Support Banner

"_enable_NUMA_support" = true on Exadata causes PX message buffers to come out of the numa pool; possible ORA-12805/ORA-4031 (Doc ID 2378765.1)

Last updated on OCTOBER 23, 2019

Applies to:

Oracle Database - Enterprise Edition - Version 12.1.0.1 and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Information in this document applies to any platform.

Symptoms

In 12c+, when PX message buffers come out of the numa pool, it is possible to see ORA-12805/ORA-4031 errors like the following if there is not enough room in the shared pool:

 

Changes

 You are running RDBMS version 12.1.0.1 or higher on Exadata.

Cause

To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!


In this Document
Symptoms
Changes
Cause
Solution
References


My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.