Sure, we do this all the time as part of our automated QA suite for our software. Works fine, and I'm not aware of any workarounds required, though there certainly could be, depending on the AIX version. Thanks, Matt ________________________________ From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of John Dunn Sent: Wednesday, October 21, 2009 10:49 AM To: oracle-l@xxxxxxxxxxxxx Subject: Patch 10.2.0.1 to 10.2.04 on AIX Is it feasible to patCh 10.2.01. directly to 10.2.04. Anyone done this?