Oracle HTTP Server Target Reported As Down in Grid Console when the Server is Actually Up and Running (Doc ID 2198254.1)

Last updated on JULY 12, 2017

Applies to:

Oracle Fusion Middleware - Version 11.1.1.7.0 to 11.1.1.9.0 [Release Oracle11g]
Oracle HTTP Server - Version 11.1.1.7.0 to 11.1.1.9.0 [Release Oracle11g]
Information in this document applies to any platform.

Symptoms


OHS not showing 100% availability in EM12c console

OHS targets are being monitored in 12c Grid control.

Intermittently, the grid control reports these targets to be down even when its up and running as verified from the opmn output. 


We have suggested to run 
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Changes

 The following commands were run every minute to check the OHS status reported by opmnctl and wlst.sh.


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${MW_HOME}/oracle_common/common/bin/wlst.sh << EOT >> $OUTPUT_FILE_WLST
connect($username,$password,$adminurl)
displayMetricTables('opmn_component:Response',servers='AdminServer',variables={'ServerNames.parameter':'/instance1/ohs1'})
exit()
EOT

echo $DATETIME >> $OUTPUT_FILE_DMS
${OHS_HOME}/bin/opmnctl dmsdump | grep -B6 "status.value" >> $OUTPUT_FILE_DMS

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The output of the above command shows "Status:0" multiple times when the OHS server is actually running , confirming that the dms is providing wrong status output

Cause

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