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Queue Monitor Coordinator Process consuming 100% of 1 cpu (Doc ID 604246.1)

Last updated on AUGUST 31, 2021

Applies to:

Oracle Database - Enterprise Edition - Version 10.1.0.2 to 10.2.0.3 [Release 10.1 to 10.2]
Information in this document applies to any platform.

Symptoms

The Queue Monitor Coordinator (QMNC) process is consuming 100% cpu of a single core.

Short errorstacks for the process look like

<-kslpstevent() <-kslpsem() <-kwqmnchslvs() <-kwqmncoord()

aq_tm_processes has been set manually to 10.

Cause

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In this Document
Symptoms
Cause
Solution
References

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