On Mon, Oct 4, 2010 at 10:55 AM, mayur nagarsheth < mayurpnagarsheth@xxxxxxxxx> wrote: > There are no jobs existing with these users. Also, it is not on RAC. > > > > That is a strange one. Not knowing how your database is set up, is it possible that ACOSTA connects periodically? Could you try locking the account, then do the delete? alter user acosta account lock;