Well, it does not look too good. Make a cold backup of your database. Then try adding



to init.ora. If you are lucky (very, very lucky) it might start. If it does, do not shut it down unser any circumstances (you might not be able to start it again!!!). Try to export database. See what objects fail export. In any case, consider the above suggestions as guidelines only. Restoring corrupted database requires pretty good understanding of every little detail of the particular case and it is nearly impossible to tell what is the best way to recover (if recovery is possible at all). And in your case you didn't even mention OS and Oracle version.

SY.