Cool, thanks for the info and demo. I checked the documentation to see if it was stated clearly that these traces affect all future sessions and I couldn't find any such statement so I assumed it was only for current sessions and you know what happens when I assume, well at least the "me" part ;-) From: Cary Millsap [mailto:cary.millsap@xxxxxxxxxxxx] Not true. Here's a simple script that can be tested with sqlplus. ________________________________ Privileged/Confidential Information may be contained in this message or attachments hereto. Please advise immediately if you or your employer do not consent to Internet email for messages of this kind. Opinions, conclusions and other information in this message that do not relate to the official business of this company shall be understood as neither given nor endorsed by it.