Hi, I had a situation like this a few weeks back on a Unix server. I got a call asking me to "Abort" the database because some killed sessions were not going away and holding locks etc. My reaction was , you must be kidding, I abort the database in the middle of the day (with lots of workin sessions on it) and then cross my fingers and hope it comes back up OK. I must admit I have yet to do an abort and not see Oracle recover, but when it comes to production databases I never want to do this unless there is no other choice. Of course the problem was solved by killing the Unix background processes. Next time someone suggets aborting the database, quiz them to see if they actually know the implications.