WARNING: CLMN Has Failed to Cleanup a Dead Process For Nnnn Attempts
(Doc ID 2616322.1)
Last updated on JULY 09, 2021
Applies to:Oracle Database - Enterprise Edition - Version 18.104.22.168 and later
Information in this document applies to any platform.
PMON and CLMN are stuck trying to clean a process that does not exist anymore. Alert log shows below:
WARNING: CLMN has failed to cleanup a dead process for 10900 attempts
WARNING: CLMN has failed to cleanup a dead process for 11000 attempts
WARNING: CLMN has failed to cleanup a dead process for 11100 attempts
From pstack and strace
239136 Found process 0xdc5e40e0 pid=109 serial=107 already dead
239137 PMON waiting for 1000 csecs
239139 *** 2019-04-29T07:02:13.437481+02:00
239140 Found process 0xdc5e40e0 pid=109 serial=107 already dead
239141 PMON waiting for 1000 csecs
466204 PMON waiting for 1000 csecs
466205 KSFV: unable to clean up secondary so: ad6be320
466206 PMON waiting for 1000 csecs
Regular database activity.
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