I found MOS Doc ID 861507.1 that confirms the problem you mentioned with the phBaseDir parameter for opatch. Thanks! From: Kellyn Pedersen [mailto:kjped1313@xxxxxxxxx] Oh and that command doesn't work! opatch prereq CheckConflictAgainstOHWithDetail -phBaseDir ./8833280 Try instead: opatch prereq CheckConflictAgainstOHWithDetail -ph ./8833280 ________________________________ Privileged/Confidential Information may be contained in this message or attachments hereto. Please advise immediately if you or your employer do not consent to Internet email for messages of this kind. Opinions, conclusions and other information in this message that do not relate to the official business of this company shall be understood as neither given nor endorsed by it.