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Note: All the posts are based on practical approach avoiding lengthy theory. All have been tested on some development servers. Please don’t test any post on production servers until you are sure.

Sunday, December 22, 2013

12c: EM: OMS Server Fails - error nm home replaced

Environment: Oracle Enterprise Manager 12c, Windows 2008 R2
Error:Below error occured on one of the client environment

C:\Windows\system32>%OMS_HOME%/bin/emctl start oms
Oracle Enterprise Manager Cloud Control 12c Release 3
Copyright (c) 1996, 2013 Oracle Corporation. All rights reserved.
Windows service OracleManagementServer_EMGC_OMS1_1 failed to be started
Oracle Management Server is Down
Please check E://gc_inst/em/EMGC_OMS1\sysman\log\emctl.log for error details


Log file showed below

2013-12-22 10:30:54,300 [main] INFO wls.OMSController main.219 - Executing emctl command : start
2013-12-22 10:30:58,536 [main] INFO commands.BaseCommand getEnvProps.456 - nm home replaced : E:/gc_inst/NodeManager/emnodemanager
2013-12-22 10:30:58,581 [main] INFO commands.StartCommand startOMS.371 - net start return code is 2
2013-12-22 10:30:58,582 [main] ERROR commands.BaseCommand logAndPrint.620 - Windows service OracleManagementServer_EMGC_OMS1_1 failed to be started
2013-12-22 10:31:00,653 [main] INFO commands.BaseCommand printMessage.404 - statusOMS finished with result: 8


Solution:
1- Check Repository Database and Listener are up and running and Repository database is registered with the listener (lsnrctl services), start the Repository Database and its listener if required.

2- Check you can connect to Repository Database as 'SYSMAN' using SQLPLUS.

3- Shutdown the OMS

C:\Windows\system32>%OMS_HOME%/bin/emctl stop oms -force
Oracle Enterprise Manager Cloud Control 12c Release 3
Copyright (c) 1996, 2013 Oracle Corporation. All rights reserved.
Stopping WebTier...
WebTier Successfully Stopped
Stopping Oracle Management Server...
Node Manager Not Running
Oracle Management Server is Down

4- Start the OMS
C:\Windows\system32>%OMS_HOME%/bin/emctl start oms
Oracle Enterprise Manager Cloud Control 12c Release 3
Copyright (c) 1996, 2013 Oracle Corporation.  All rights reserved.
Windows service OracleManagementServer_EMGC_OMS1_1 successfully started
Oracle Management Server is Up

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