ORACLE pmon crashed - is recovery possible?

  One of our Oracle-sid died mysteriously yesterday. I cannot bring it   back up again.   

  The SID-id is "develop". It seems to be choking in reading it's control   file, and thinks some other process is using the same id. I tried   to reboot the machine, but result was the same error.

  Oracle hotline was called; they don't know how to resolve this either.

  SQLDBA> startup
  ORACLE instance started.
  ORA-00205: error in identifying control file 'cntrldevelop.dbf'   ORA-09782: sfifi: another instance has the same database mounted.   Attempting to shutdown instance........ORACLE instance shut down.   SQLDBA>  
-This is in my alert log:

Error signalled in file: $ORACLE_HOME/rdbms/log/4_200.trc ORA-00604: error occurred at recursive SQL level 1 ORA-00472: PMON process terminated with error Mon Nov 16 15:11:19 1992

-This is in my trace file:

SMON: system monitor started
Mon Nov 16 14:52:09 1992
SMON: following errors trapped and ignored: ORA-00604: error occurred at recursive SQL level 1 ORA-00472: PMON process terminated with error Mon Nov 16 14:52:09 1992
SMON: error 472 detected in other detached process Mon Nov 16 14:52:09 1992
SMON: system monitor exiting.
OPIRIP: Uncaught error 447. Error stack: ORA-00447: fatal error in background process ORA-00472: PMON process terminated with error OPIRIP: Detached process complete.

Oracle support said to reinstall. Any other ideas would be greatly appreciated. Please e-mail to me and I will summarize.

Thanks!

--

 Leila Schneberger                 leilas_at_ems.cdc.com