that is kinda true and i believei smentioned in the readme for a one off patch. PSU and Patchsets & CPU are supposed to be regression tested. Normally one-off patches are created to solve a specific issue and you want ot endure that oracle wants you to install the one off patch before you actually install it. ________________________________ From: Wolfson Larry - lwolfs <lawrence.wolfson@xxxxxxxxxx> To: ORACLE-L <oracle-l@xxxxxxxxxxxxx> Sent: Sat, May 29, 2010 7:32:40 AM Subject: Patch Question A client made this comment. “One off patches are not regression tested by Oracle. “ Is this true? TIA *************************************************************************** The information contained in this communication is confidential, is intended only for the use of the recipient named above, and may be legally privileged. If the reader of this message is not the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please resend this communication to the sender and delete the original message or any copy of it from your computer system. Thank You. ****************************************************************************