Is there a way to reinstall the agent who is monitoring the OMS , Webtier etc. in CloudControl ?
After the upgrade vom 11g to 12C i have multible main agents in CC and get to status . I thing there is a problem with an entry in the repository .
the agent self has no targets in the targets.xml .
any way to reinstall this agent and discover the targets new ( webtier , oms etc)
While doing upgrade from 11g - 12c you must have used pre-upgrade console to upgrade ( out of place upgrade) existing agents to em 12c agent. If you have done the switchover or done with you whole upgrade process , then you figure out why upgraded agent is not working then reinstalling is bad idea especially when its the agent with the OMS. You need to debug the problem with oracle support.
Pre-upgrade console has lot of healthcheck to make sure that the upgraded agent is all ok and ready to work. If you didn’t see any issues with the healthcheck report then something or some one manually played around with the upgraded agent.