Periodically Targets Stop being Monitored by the Grid Control Agent, Grid control shows Agent is Unreachable (REASON = Received unexpected response text :EMDAEMON HTTP/1.1 404 , Not Found) (Doc ID 1354376.1)

Last updated on MARCH 08, 2017

Applies to:

Enterprise Manager Base Platform - Version 10.2.0.5 to 11.1.0.1 [Release 10.2 to 11.1]
Information in this document applies to any platform.
Checked for relevance on 12-Aug-2014

Symptoms


The grid control agent stops monitoring its targets, and the targets go into ambiguous status. Grid control shows:-

Agent is Unreachable (REASON = Received unexpected response text :EMDAEMONHTTP/1.1 404 , Not Found)

However the agent is still up and running.

$ORACLE_HOME/sysman/log/emagent.trc from the same time that this problem occurs shows:-

haconfig1_collection+segment_advisor_count+DatabaseVaultRealmViolation_collection+DatabaseVaultCommandRuleViolation_collection+DatabaseVaultRealmConfigurationIssue_collection is due to run again but is still running from last schedule
2011-04-19 19:04:28,222 Thread-12779 ERROR scheduler: Collection oracle_database:orcl:haconfig1_collection+segment_advisor_count+DatabaseVaultRealmViolation_collection+DatabaseVaultCommandRuleViolation_collection+DatabaseVaultRealmConfigurationIssue_collection has not finished in 721 minutes (allowed: 720).
Exiting agent.
2011-04-19 19:04:28,402 Thread-12779 ERROR : Signalled to Exit with status 3. Hung collection
2011-04-19 19:04:28,403 Thread-1 ERROR main: EMAgent abnormal terminating

....
2011-04-19 19:06:47,443 Thread-14 ERROR TargetManager: TIMEOUT reached in computing dynamic properties for target orcl,oracle_database::compute timings were [decideIncludeDB:0-1] [SystemTablespaceNumber:1-1] [SysauxTablespaceNumber:1-1] [GetDBVersion:1-1] [ComputeVC:1-1] [CheckRAC:1-1] [GetDataGuardStatus:1-1] [GetResourceName:1-(120)]
2011-04-19 19:06:47,443 Thread-14 INFO TargetManager: nmeetm.c : nmeetm_computeDynProperties : Sending terminate signal to the thread.
...
2011-04-19 19:06:47,449 Thread-14 INFO TargetManager: nmeetm.c : Recomputation of the dynamic properties of the target [name = orcl] scheduled
2011-04-19 19:06:47,449 Thread-14 ERROR TargetManager: target {orcl, oracle_database} is broken: cannot compute dynamic properties in time.

..
2011-04-19 19:06:47,454 Thread-10 INFO TargetManager: nmeetm.c : nmeetm_computeDynProperties : Sending terminate signal to the thread.
...
2011-04-19 19:06:47,459 Thread-10 ERROR TargetManager: target {orcl, oracle_database} is broken: cannot compute dynamic properties in time.

2011-04-19 19:06:50,613 Thread-1 ERROR collector: ParseError: File=file:<$ORACLE_HOME>/agent10g/sysman/emd/collection/oracle_database_orcl.xml, Line=2, Msg=<CollectionItem> Target NAME=orcl does not exist

Cause

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