For the initial question, the fix was just to restart the services. Are you seeing the same error, ie 'no configured dispatchers'? Or are you getting an "invalid username or password" error? What version of OCI are you running?
I posted earlier but looks like it didn't make it or I never hit Post! Here's what we found after the server team applied patches to the O/S. We had to restore two files: (cCSKKeystore and jCSKKeystore) in the following dir: