Do you have identical TNSNAMES.ORA files in both ORACLE_HOMEs?

Have you done a
     ps -ef | grep ora
to see if the instance is started?

This error is caused either by a bad SERVICE_NAME in the TNSNAMES.ORA file
or else because the instance is not started.

"ORA-12514: TNS:listener could not resolve SERVICE_NAME given in connect
descriptor
     Cause: The service name specified in the connect descriptor is
     incorrect, or the database service is not registered with the
     listener.
     Action: Perform these steps:
        1.      Check to make sure the SERVICE_NAME specified in the
          connect descriptor is correct.
        2.      Ensure the database instance is running. If the instance
          not running, start it so that it can register with the listener.
          You can use the Listener Control utility SERVICES command to see
          what services are currently registered with the listener. "


        You can check the LISTENER by going to the command line at
          ORACLE_HOME/bin and entering
          lsnrctl services
        If you don't see an entry for CMS then enter
          lsnrctl reload
        and then
          lsnrctl services.

        HTH

-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: 
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