Intermittently PROCESSED Messages Are Not Removed from Queue Tables by the QMON Processes
(Doc ID 752708.1)
Last updated on AUGUST 04, 2018
Applies to:Oracle Database - Enterprise Edition - Version 10.2.0.1 to 126.96.36.199 [Release 10.2 to 11.2]
Intermittently PROCESSED messages are not being removed from queue tables.
Attaching to the qmon processes via oradebug and generating an errorstack causes the PROCESSED messages to be removed. Stack trace generated matches that in <Note:580273.1>.
alter system set aq_tm_processes=0 scope=memory;
alter system set aq_tm_processes=1 scope=memory;
restarts the qmon slave process and temporarily works around the issue.
The problem is only observed on the HP-UX Itanium port.
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