I have no "prefered" way, however I'd go in the following order:
1 - Try to repair the database (see link below):
http://seer.support.veritas.com/docs/265180.htm
2 - Try to recover the database (see link below):
http://seer.support.veritas.com/docs/261638.htm
3 - If restoring the database fails, then create a new one (see link below):
http://seer.support.veritas.com/docs/254014.htm