Jeffrey, If already patched 11.1.0.7 home with patch 23, then after running dbua you don't need to run it again. Just to verify that that patch applied correctly you may run opatch lsinventory -detail (optional) command. Regards Rafiq Date: Mon, 1 Mar 2010 12:09:49 -0500 From: JBECKSTROM@xxxxxxxxx To: oracle-l@xxxxxxxxxxxxx; oracle-db-l@xxxxxxxxxxxxxxxxxxxx Subject: Run catcpu or not I am upgrading 10.20.4 to 11.1.0.7 plus patch 23 on windows. If patch 23 is installed prior to running DBUA to do the upgrade to 11.1.07, do I still need to run catcpu from patch 23? Jeffrey Beckstrom Database Administrator Greater Cleveland Regional Transit Authority 1240 W. 6th Street Cleveland, Ohio 44113 _________________________________________________________________ Hotmail: Trusted email with powerful SPAM protection. http://clk.atdmt.com/GBL/go/201469227/direct/01/