PX Slave Load not Evenly Distributed across RAC Nodes
(Doc ID 2537986.1)
Last updated on OCTOBER 23, 2019
Applies to:Oracle Database - Enterprise Edition - Version 18.104.22.168 to 22.214.171.124.0 [Release 12.1 to 18]
Information in this document applies to any platform.
The majority of PX slaves 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 slave 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