How to know how long a Rollback will take

I did an import that failed to extend the UNDO segment of my database. I realize I need to use commit=y to overcome this issue. However, the database is rolling back the records it imported before hitting the error. This can take several hours.

Is there a way to determine how much longer the rolling back will take?  Is there a view or a process that I can get an idea of this?

Thanks,
Dan Received on Fri Sep 29 2006 - 08:17:27 CDT