ORA-12853 And Large _parallel_min_message_pool Allocation (Doc ID 1589995.1)

Last updated on NOVEMBER 28, 2016

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.3 and later
Information in this document applies to any platform.

Symptoms

When starting an Oracle instance on a 128-CPU machine with a shared pool of 600MB the following error is raised:

ORA-12853 : insufficient memory for PX buffers


Setting the shared pool size to 1GB allows the instance to start, but a large amount of memory is dedicated to the "PX msg pool".

Cause

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