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Basic Troubleshooting Guide For Grid Control 10g Oracle Management Server (OMS) Midtier (Doc ID 550395.1)

Last updated on NOVEMBER 09, 2019

Applies to:

Enterprise Manager Base Platform - Version to [Release 10.2]
Information in this document applies to any platform.
This note is based on Grid Control (GC), can be applied to other 10.2 versions.


Grid Control(GC) installation consists of three major components:

  • Oracle Application Server - Oracle Management Server( OMS)
  • Oracle Database                  - Oracle Mangement Server(OMS) Repository
  • EM agent

Each major component's sub-directory can be viewed as a separate ORACLE_HOME:

  • <GG_ORACLE_HOME>/oms10g
  • <GG_ORACLE_HOME>/db10g
  • <GG_ORACLE_HOME>/agent10g


  • OPMN
  • DCM
  • Oracle HTTP Server (OHS)
  • OC4J
  • WebCache (WC)
  • Application Server Control (ASC)

Many of the above OMS components (DCM, OHS, OC4J, WC ) are managed by opmn. Some of the operations are:

  • start
  • stop
  • death detection/health check/restarts
  • component restarts

This note provides the basic troubleshooting step to:

Troubleshooting Steps

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In this Document
Troubleshooting Steps
 Generic troubleshooting steps
 Test OMS components in standalone mode
 OPMN references
 OC4J references
 Oracle HTTP Server references
 WebCache references
 OMS versions certified for Grid Control

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