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EM 13c, 12c: Agent Incidents Generated with "oracle.sysman.gcagent.task.TaskZombieException:oracle.sysman.gcagent.task.TaskFutureImpl$WrappedTask" (Doc ID 2722778.1)

Last updated on NOVEMBER 04, 2020

Applies to:

Enterprise Manager for Oracle Database - Version 13.3.0.0.0 and later
Information in this document applies to any platform.

Symptoms

EM 12c / 13c agents are intermittently generating the incidents with the following stack trace:

oracle.sysman.gcagent.task.TaskZombieException:oracle.sysman.gcagent.task.TaskFutureImpl$WrappedTask

$AGENT_INST_HOME/sysman/log/gcagent.log reports following errors during this time:

2020-10-15 08:39:44,960 [170:5B238F8E:GC.Executor.6 (oracle_database:<DBName>:topSqlMonitoringList_col)] WARN - IntervalSchedule: Skip schedule [oracle_database:<DBName>:topSqlMonitoringList_col] - skipping due to execution time exceeding interval
2020-10-15 08:39:45,204 [824:4555D899:HTTP Listener-824] WARN - selectDispatchCoordinator selected : oracle.sysman.gcagent.dispatch.InlineDispatchCoordinator
2020-10-15 08:39:45,204 [824:8F0FF747:HTTP Listener-824 (~Task-free~ >[160276560891006])] INFO - >>> Dispatching request: GetOperationStatusRequest (name:ApplicationOperation:GCCOMPLIANCE-remove 2020-10-15 08:40:19 id:-1) <<<
2020-10-15 08:39:45,204 [824:8F0FF747] INFO - >>> Reporting response: GetOperationStatusResponse (status:SUCCEEDED message:null) (request id 1) <<<
2020-10-15 08:39:45,538 [38:642FB6F2] INFO - ADR Incident created: Id=660, message=[task declared as a zombie], module=oracle.sysman.gcagent.task.TaskFutureImpl$WrappedTask, problemKey='oracle.sysman.gcagent.task.TaskZombieException:oracle.sysman.gcagent.task.TaskFutureImpl$WrappedTask:621', direcotry=/u01/app/oracle/em_agent/agent_inst/diag/ofm/emagent/emagent/incident/incdir_660

 

Cause

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In this Document
Symptoms
Cause
Solution
References


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