My Oracle Support Banner

PX Worker Load not Evenly Distributed across RAC Nodes (Doc ID 2537986.1)

Last updated on JULY 15, 2021

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 12.1 to 18]
Information in this document applies to any platform.


The majority of PX workers are repeatedly allocated to the same RAC node that has a significantly higher load than the other RAC nodes.   

In this example, it was Node 2 of an 8-node RAC cluster that was always picked for worker allocation, when in fact it was significantly more loaded than the other nodes.  Tracing with [PX_Control] and [PX_Messaging] shows that resource manager estimates the load on Node 2 is low.





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

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