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Queue Is Not Dequeued And Got Stuck As No QMON Running (Doc ID 2440796.1)

Last updated on MARCH 12, 2021

Applies to:

Oracle Database - Enterprise Edition - Version 12.1.0.2 and later
Information in this document applies to any platform.

Symptoms


Queue is not dequeued and got stuck.
No qmon (i.e qmn, q00*) processes at OS level observed, even after database restarted

Even we tried to set aq_tm_processes to 0 and than 1 or 5, but not helping.
Bounced the database and even host but not helping

Also observed AQPC process was started once instance started, but it gone between
database mount and open. But it took around 10 min for opening database after mount




Changes

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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