How to reconfigure oracle dbconsole

How to reconfigure oracle dbconsole

If the IP address and/or hostname changes for a system running Oracle, we need to reconfigure oracle dbconsole correctly.
This post will discuss about  How to reconfigure oracle dbconsole :

1. drop oracle dbconsole repository
   cd $ORACLE_HOME/bin ./emca -deconfig dbcontrol db -repos drop
2. recreate oracle dbconsole repository
   ./emca -config dbcontrol db -repos create
3. shutdown oracle database
   sqlplus sys@blabla as sysdba
   sql > shutdown immediate
4. startup oracle database
   sql > startup