newbie with startup problem

I have problem with the startup form a database.

when i start the db i've got the error that one off the rollback files are not there

few minutes before the system crashed and the file was delete when fsck works

and I have also no backup

i know that at this time nobody worked in the db and also no jobs running

have i a chance to start this db again ??

--
best regards

Alexander Müller