Register the ofm11g instance with the middleware home due to fail to invoke operation error. This is supposed to only be required after a software upgrade but I have seen it several times.
Solution
1. Make sure the AdminServer is up and running.
2. Run the <as instance home>/bin/opmnctl unregisterinstance command.
e.g. <as instance home>/bin/opmnctl unregisterinstance -instanceName instance1 -adminHost myhostname -adminPort 7001
3. Run the opmnctl redeploy command.
e.g. <as instance home>/bin/opmnctl redeploy -adminHost myhostname -adminPort 7001
the command will prompt for the weblogic username and password. Just provide them to complete the command run.
4. Run the opmnctl registerinstance command.
e.g. <as instance home>/bin/opmnctl registerinstance -adminHost myhostname -adminPort 7001