EM 12c: Accessing the Enterprise Manager 12c Cloud Control URL Shows Error Message: Backend WLS or EM application seems to be down

(Doc ID 1367997.1)

Last updated on MAY 06, 2017

Applies to:

Enterprise Manager Base Platform - Version 12.1.0.1.0 and later
Information in this document applies to any platform.

Symptoms

Accessing EM 12c Cloud Control shows the following error message:

'Backend WLS or EM application seems to be down'

 

 


- The OMS is actually down as seen in the command session output:

cd <OMS_HOME>/bin 
emctl status oms
Oracle Enterprise Manager Cloud Control 12c Release 12.1.0.1.0
Copyright (c) 1996, 2011 Oracle Corporation. All rights reserved.
WebTier is Up
Oracle Management Server is Down

 

The following log entries are made, coinciding with the failure of the OMS:


-  From .../gc_inst/em/EMGC_OMS1/sysman/log/emctl.msg:

HealthMonitor Oct 16, 2011 4:26:47 AM Job Dispatcher error: Could not connect to repository
Critical error err=3 detected in module Job Dispatcher

OMS will be restarted. A full thread dump will be generated in the log file
/DATA/Middleware/gc_inst/user_projects/domains/GCDomain/servers/EMGC_OMS1/logs/EMGC_OMS1.out
to help Oracle Support analyse the problem.
Please consult My Oracle Support Note 964469.1 for additional information.


-  From .../gcinst/em/EMGC_OMS1/sysman/log/emctl.log:


2011-10-16 04:31:32,565 [main] DEBUG oms.StatusOMSCmd pingOMSCheck.332 - Attempting to connect to https://omsmachine.domain:7302/em/faces/logon/core-uifwk-console-login
2011-10-16 04:31:33,239 [main] DEBUG oms.StatusOMSCmd pingOMSCheck.332 - Attempting to connect to https://omsmachine.domain:7801/empbs/check
2011-10-16 04:31:33,262 [main] DEBUG oms.StatusOMSCmd processStatusOMS.239 - console page status code is 404
2011-10-16 04:31:34,341 [main] DEBUG oms.StatusOMSCmd processStatusOMS.241 - pbs page status code is 500
2011-10-16 04:31:34,342 [main] DEBUG oms.StatusOMSCmd processStatusOMS.244 - console header is null
2011-10-16 04:31:34,342 [main] DEBUG oms.StatusOMSCmd processStatusOMS.246 - pbs header is null
2011-10-16 04:31:34,342 [main] DEBUG oms.StatusOMSCmd processStatusOMS.284 - Both Console and PBS are down. Status codes are: Console - 404 and PBS - 500
2011-10-16 04:31:34,342 [main] INFO oms.StatusOMSCmd processStatusOMS.293 - Failed to connect to em login page
2011-10-16 04:31:34,348 [main] INFO oms.StatusOMSCmd processStatusOMS.294 - Encountered error while hitting page. Status codes are 404 for console and 500 for PBS
2011-10-16 04:31:34,349 [main] INFO oms.StatusOMSCmd processStatusOMS.295 - Connection exception when trying to hit OMS page. OMS is down
2011-10-16 04:31:34,376 [main] INFO wls.OMSController statusOMS.1354 - statusOMS finished with result: 8


From .../gc_inst/em/EMGC_OMS1/sysman/log/emoms.trc:

2011-10-16 04:27:11,659 [AdminMsgListener] WARN jdbc.ConnectionCache _getConnection.373 - ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux-x86_64 Error: 2: No such file or directory


java.sql.SQLRecoverableException: ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux-x86_64 Error: 2: No such file or directory


at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:457)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:397)



Changes

 

Cause

Sign In with your My Oracle Support account

Don't have a My Oracle Support account? Click to get started

My Oracle Support provides customers with access to over a
Million Knowledge Articles and hundreds of Community platforms