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Enterprise Manager Cloud Control 12c OMS not Starting after Server Reboot but WebTier is Up (Doc ID 1367876.1)

Last updated on NOVEMBER 17, 2017

Applies to:

Enterprise Manager Base Platform - Version to [Release 12.1]
Information in this document applies to any platform.


The Enterprise Manager (EM) Cloud Control OMS stopped working after rebooting the server that hosts the OMS. It was working before.

$ emctl start oms

Oracle Enterprise Manager 12c Release 1 Grid Control
Copyright (c) 1996, 2011 Oracle Corporation. All rights reserved.
Starting WebTier...
WebTier Successfully Started
Starting Oracle Management Server...
Oracle Management Server is Down

The issue can happen as well when Upgrading from Enterprise Manager Grid Control 11g to Enterprise Manager12c Cloud Control using one system upgrade method.


The following errors are found in the emctl.log file :

011-10-12 16:18:19,403 [main] DEBUG oms.StatusOMSCmd pingOMSCheck.332 - Attempting to connect to https://<hostname>:7799/empbs/check
2011-10-12 16:18:19,414 [main] DEBUG oms.StatusOMSCmd processStatusOMS.239 - console page status code is 404
2011-10-12 16:18:20,482 [main] DEBUG oms.StatusOMSCmd processStatusOMS.241 - pbs page status code is 500
2011-10-12 16:18:20,482 [main] DEBUG oms.StatusOMSCmd processStatusOMS.244 - console header is null
2011-10-12 16:18:20,483 [main] DEBUG oms.StatusOMSCmd processStatusOMS.246 - pbs header is null
2011-10-12 16:18:20,483 [main] DEBUG oms.StatusOMSCmd processStatusOMS.284 - Both Console and PBS are down. Status codes are: Console - 404 and PBS - 500
2011-10-12 16:18:20,483 [main] INFO oms.StatusOMSCmd processStatusOMS.293 - Failed to connect to em login page
2011-10-12 16:18:20,483 [main] INFO oms.StatusOMSCmd processStatusOMS.294 - Encountered error while hitting page. Status codes are 404 for console and 500 for PBS
2011-10-12 16:18:20,483 [main] INFO oms.StatusOMSCmd processStatusOMS.295 - Connection exception when trying to hit OMS page. OMS is down
2011-10-12 16:18:20,519 [main] INFO wls.OMSController statusOMS.1354 - statusOMS finished with result: 8


The following errors are found in the EMGC_OMS1.out file :

<Oct 12, 2011 4:17:28 PM GMT> <Warning> <JDBC> <BEA-001129> <Received exception while creating connection for pool "sysman-opss-ds":IO Error: The Network Adapter could not establish the connection>

[EL Severe]: 2011-10-12 16:17:29.865--ServerSession(1559633258)--Local Exception Stack:

Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.1.3.v20110304-r9073): org.eclipse.persistence.exceptions.DatabaseException

Internal Exception: weblogic.jdbc.extensions.ConnectionDeadSQLException:

weblogic.common.resourcepool.ResourceDeadException: 0:weblogic.common.ResourceException: Could not create pool connection.The DBMS driver exception was: IO Error: The Network Adapter could not establish the connection
Error Code: 0
at org.eclipse.persistence.exceptions.DatabaseException.sqlException(




The server has rebooted


The upgrade from EM 11g to EM 12c has finished.



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