trace sql without session_id and serial#

Giganews Newsgroups
Subject: trace sql without session_id and serial#
Posted by:  Steve Robin (ocmam…
Date: Thu, 26 Jul 2007

My current database so many users are connected. SQL trace is off. I
need to trace a developer session. I just have osname and username.
Session is not connected right now. As soon as he connects some sql
fired from that session. I know how trace it after he connects I can
see session info from v$session but without knowing session id and
serial#, how can I trace with osuser and username only.

I cann't restart database, because so many people are working on it.

Oracle Database :
OS : Windows 2000