After reboot can't login to OEM login page. It says " The database status is currently unavailable. It is possible that the database is in mount or nomount state. Click 'Startup' to obtain the current status and open the database. If the database cannot be opened, click 'Perform Recovery' to perform an appropriate recovery operation."
I started the DB. Started the LISTENER and
emctl start dbconsole
Oracle Enterprise Manager 10g Database Control Release 10.1.0.2.0
Copyright (c) 1996, 2004 Oracle Corporation. All rights reserved.
Starting Oracle Enterprise Manager 10g Database Control ........................ started.