EM 12c: Enterprise Manager 12c Cloud Control Agent Restarts with Error: WARN - Bouncing the agent due to zombies [zombieCnt=3] (Doc ID 2066385.1)

Last updated on APRIL 15, 2017

Applies to:

Enterprise Manager for Oracle Database - Version 12.1.0.4.0 and later
Information in this document applies to any platform.

Symptoms

Environment:
EM 12.1.0.4 system
Database/Listener/ASM targets


The EM 12c Cloud Control Agent frequently restarts. The following errors are logged in the .../agent_inst/sysman/log/ directory:

<agent instance>/sysman/log/gcagent_errors.log

2015-08-27 12:53:03,533 [103:GC.Executor.2 (rac_database:cdb004pa.ntrs.com:cdbjob_status)] ERROR - rac_database:cdb004pa.ntrs.com:cdbjob_status
oracle.sysman.gcagent.task.TaskZombieException: task declared as a zombie


<agent instance>/sysman/log/emagent.nohup

Oct 3, 2015 4:58:28 PM oracle.sysman.diag.EMDiagImpl captureDiagData.478
SEVERE: Critical error: Bouncing the agent due to too many zombie tasks
java.lang.Throwable: Bouncing the agent due to too many zombie tasks


<agent instance>/sysman/log/gcagent.log

2015-10-02 12:17:03,543 [250:1C090640:GC.SysExecutor.5 (ZombieDetector)] WARN - Declaring longop rac_database:cdb520pa.ntrs.com:cdbjob_status:COLLECTION_TASK:Fri Oct 02 11:13:12 CDT 2015 as a zombie
2015-10-02 12:17:03,544 [250:1C090640] INFO - Suspended rac_database:cdb520pa.ntrs.com:cdbjob_status:cdbjob_status until 2015-10-03 12:17:03.543
2015-10-02 12:17:03,544 [250:1C090640] INFO - Suspending rac_database:cdb520pa.ntrs.com:cdbjob_status:cdbjob_status for finite suspension until Sat Oct 03 12:17:03 CDT 2015 due to zombie task
2015-08-11 05:54:56,564 [321:A52CCA7E] WARN - Bouncing the agent due to zombies [zombieCnt=3]

 

 

 

Changes

 

Cause

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