I have the exact same issue as described here JDBC Connection on Current Primary Database After Switchover: ORA-01033 encountered
We have OIM 11gr2PS3 app and 2 node rac DB cluster. When I switchover from primary to sandby and then try to bring up Admin server it throws error "ORA-01033: ORACLE initialization or shutdown in progress" because admin server is still trying to old primary and current/new standby.
I have tried so many different things but no luck so far. I am wondering if someone resolved this and can give me a clue or direction to resolve it.
We are approaching to Go-Live dead line and it is becoming very critical now. So it would really be a great help if someone can provide some assistance here please.