I am thinking any of the errors can be traced with: event="<nnn> trace name errorstack level <x>" Not sure what the level would be for this error, but you might be able to start with 1. Now I just have to wait for someone to correct me if I am wrong. =) I know there is a mesg file in $OH that describes all the events, but for the life of me I cannot remember it. -----Original Message----- From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Deepak Sharma Sent: Thursday, July 27, 2006 9:58 AM To: oracle-l@xxxxxxxxxxxxx Subject: Tracing invalid rowid ora-01410 How do we force the generation of a trace file whenever an error (invalid rowid ora-01410) happens in the database. Right now only some of the ORA-01410 show up in alert log, but not all. Is there a 'alter system set event <nnn>' that can be done to achieve this? Thanks, Deepak __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com -- //www.freelists.org/webpage/oracle-l -- //www.freelists.org/webpage/oracle-l