Pages

Monday, April 22, 2013

Oracle Enterprise Manager 12C : More Details

OMS Start Up

When you start the Management Service, the following services are started:

OPMN process. This is the watchdog for the Apache process. The OPMN process starts the Apache process if it crashes.

Apache processes to start the HTTP server

Node Manager Java process. This is the watchdog for the Managed Server and Admin Server processes. It restarts the Managed Server and Admin Server processes if they crash.

Admin Server Java process (if the command to start OMS is executed on the first OMS machine). This is the WebLogic Server instance that maintains configuration data for configured Enterprise Manager domain.

Managed Server Java process. This is the Managed WebLogic Server on which Enterprise Manager application is deployed.

Logging Details

emctl log file 
$INSTANCE_HOME/em/EMGC_OMS<n>/sysman/log/

Managed Server log files 
$INSTANCE_HOME/user_projects/domains/<DOMAIN_NAME>/servers/EMGC_OMS<n>/logs/EMGC_OMS<n>.log
$INSTANCE_HOME/user_projects/domains<DOMAIN_NAME>/servers/EMGC_OMS<n>/logs/EMGC_OMS<n>.out

OMS log files
$INSTANCE_HOME/em/EMGC_OMS<n>/sysman/log/
$INSTANCE_HOME/em/EMGC_OMS<n>/sysman/log/emoms_pbs.trc
$INSTANCE_HOME/em/EMGC_OMS<n>/sysman/log/emoms.trc
$INSTANCE_HOME/em/EMGC_OMS<n>/sysman/log/emoms.log
(In an environment with multiple OMS instances, <n> refers to the number of the OMS in the environment.)

Node Manager log files
$INSTANCE_HOME/NodeManager/emnodemanager/nodemanager.log

Admin Server log files
INSTANCE_HOME/WebTierIH1/diagnostics/logs/OHS/ohs1/access_log

WebTier Service Fails to Start
Check logs under <WebTier Instance Home>/diagnostics folder in case WebTier start fails.


To Verify Plugin Installation 
Verify if all the plug-ins were installed successfully. To do so, access the following log file from the Management Agent home, and search for the sentence WARN:Plugin configuration has failed.

$<AGENT_HOME>/cfgtoollogs/cfgfw/CfmLogger-<timestamp>.log