What version of Oracle are you using? Any chance that you are being affected by Bug 5458753 - SQL may execute in wrong schema (also discussed in Doc ID 392673.1)? That affects 10.2.0.2-- I thought it was resolved in 10.2.0.3. Justin Cave Distributed Database Consulting, Inc. http://www.ddbcinc.com -----Original Message----- From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Chen Shapira Sent: Friday, November 06, 2009 10:42 PM To: oracle-l Subject: Logminer showing an update that could not have happened Dear Oracle Experts, User A complained about unexplained changes in one of his tables. Since he had an exact timestamp of when the data changed, I decided to use logminer to look into it. I filtered the logminer results to show me just the specific segment that changed, so I filtered by seg_name="T1" and seg_owner="A". Then I looked at username, session#, session info, sql_redo and sql_undo. From the information in the log miner, it looked like user B updated the table that belongs to user A. (i.e. username is B, login_user inside session_info was user B, machine in session_info was user B's desktop, and SQL Redo was "update A.T1....") The problem is that user B does not have the required privileges to do this update. I double checked that by logging in as user B, tried to run the exact update I was in the logminer table and received: ORA-01031: insufficient privileges Just like I expected from examining sys privs, object privs and roles. One possibility is that the privileges were changed after the update happened. I seriously doubt it, but currently its the only theory I have. Is there other possibilities? Can I be misreading the log miner table? I'll appreciate any hints and directions. Thanks, Chen Shapira -- //www.freelists.org/webpage/oracle-l Internal Virus Database is out of date. Checked by AVG - www.avg.com Version: 8.5.422 / Virus Database: 270.14.21/2445 - Release Date: 10/19/09 06:40:00 -- //www.freelists.org/webpage/oracle-l