I have no idea. To date, I have never done a PSU or a CPU. From what I read, the PSU will encompass the latest CPU...I think.....but don't quote me on that.... :) From: Roger Xu [mailto:wellmetus@xxxxxxxxx] Sent: Monday, August 24, 2009 2:14 PM To: Bobak, Mark Cc: ChrisDavid.Taylor@xxxxxxxxxxxxxxx; Oracle L Subject: Re: Question about patch levels Mark, So we need to pick either CPU or PSU from now on? Note 854428.1 says it's not easy to reverting from PSU back to CPU. Thanks, Roger On Mon, Aug 24, 2009 at 11:39 AM, Bobak, Mark <Mark.Bobak@xxxxxxxxxxxx<mailto:Mark.Bobak@xxxxxxxxxxxx>> wrote: Actually, Roger, that's not really true anymore. Oracle has recently announced the concept of a PSU, or patch set update. So, if you're on 10.2.0.4.0, and you apply the first PSU on 10.2.0.4.0, you'll be running 10.2.0.4.1. After the second PSU, it will be 10.2.0.4.2. This is very new. I've never seen a PSU, let alone applied one, but, they're starting w/ 10.2.0.4, and later plan to add one for 18.104.22.168. See MetaLink Doc ID 850471.1 for full details. -Mark From: oracle-l-bounce@xxxxxxxxxxxxx<mailto:oracle-l-bounce@xxxxxxxxxxxxx> [mailto:oracle-l-bounce@xxxxxxxxxxxxx<mailto:oracle-l-bounce@xxxxxxxxxxxxx>] On Behalf Of Roger Xu Sent: Monday, August 24, 2009 12:35 PM To: ChrisDavid.Taylor@xxxxxxxxxxxxxxx<mailto:ChrisDavid.Taylor@xxxxxxxxxxxxxxx> Cc: Oracle L Subject: Re: Question about patch levels 10.2.0.4.0 1st Digit is a major database release number. 2nd Digit is the database maintenance release number. 3rd Digit is the application server release number. 4th Digit identifies a release level specific to a component. 5th Digit identifies a platform specific release. On Mon, Aug 24, 2009 at 11:23 AM, Taylor, Chris David <ChrisDavid.Taylor@xxxxxxxxxxxxxxx<mailto:ChrisDavid.Taylor@xxxxxxxxxxxxxxx>> wrote: If you're running 10.2.0.4 cpu patch 24, is there a version number for this like 10.2.0.4.24? Chris Taylor Sr. Oracle DBA Ingram Barge Company Nashville, TN 37205 Office: 615-517-3355 Cell: 615-354-4799 Email: chris.taylor@xxxxxxxxxxxxxxx<mailto:chris.taylor@xxxxxxxxxxxxxxx> CONFIDENTIALITY NOTICE: This e-mail and any attachments are confidential and may also be privileged. If you are not the named recipient, please notify the sender immediately and delete the contents of this message without disclosing the contents to anyone, using them for any purpose, or storing or copying the information on any medium.