When datafiles are not released after dropping a tablespace then again lsof is useful for identifying which process still holds the files open. I've experienced a similar case in Oracle 9.2 on Solaris, it turned out that the idle job queue processes still had the files open even after tablespace was dropped. As I did not want to bounce the instance just because of that, I set job_queue_processes = 0, waited until the processes died (and the files were released) and set job_queue_processes back to original again. -- Regards, Tanel Poder http://blog.tanelpoder.com <http://blog.tanelpoder.com/> _____ From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Asif Momen Sent: Thursday, January 17, 2008 13:55 To: kennaim@xxxxxxxxx; andrew.kerber@xxxxxxxxx; p4cldba@xxxxxxxxx Cc: 'oracle-l' Subject: RE: df shows 100% on a empty filesystem- Hi, As Ken mentioned, I have also seen this happening on IBM-AIX (Oracle 10g R2) when I dropped a huge undo tablespace. We had to bounce the instance to reclaim the space. Regards Asif Momen http://momendba.blogspot.com