Regressing an Opatch version

According to Metalink the only supported  way to regress to the version of Opatch that was installed is to re-install. However Opatch is a self-contained directory and the contents can be copied from another base installation.

Why would I want to regress the Opatch version. Let me explain with the commands I used.

Database version 10.2.0.4 (which gives opatch version 10.2.0.4.3)  

I wanted to install the PSU patch which requires a leter version of opatch (10.2.0.4.7). What I should have done was copy the opatch folder and save ready for a restore. However I didn’t and when the PSU patch failed due to issues with previously applied patches I had trouble applying the April 2009 CPU patch.

I followed these steps to resolve the problem

Secure existing folder and remove contents

cd $ORACLE_HOME

tar cvf OPatch.20090917_local.tar ./OPatch

rm -R OPatch

Logon onto the remote server and tar the OPatch folder up and ftp to the local server. Note use a different name for the tar file so as not to overwrite the tar files that you have just created.

tar cvf OPatch.20090917_remote.tar ./OPatch

Back on the local server unzip the tar file and check the version of opatch

tar xvf OPatch.20090917_remote.tar 

a./OPatch/docs/FAQ 31 blocks
a ./OPatch/docs/Users_Guide.txt 38 blocks
a ./OPatch/docs/Prereq_Users_Guide.txt 25 blocks
a ./OPatch/jlib/opatch.jar 1415 blocks
a ./OPatch/jlib/opatchutil.jar 270 blocks
a ./OPatch/jlib/opatchprereq.jar 242 blocks
a ./OPatch/jlib/opatchactions.jar 142 blocks
a ./OPatch/opatch 14 blocks
a ./OPatch/opatch.pl 6 blocks
a ./OPatch/opatch.ini 1 blocks
a ./OPatch/emdpatch.pl 38 blocks
a ./OPatch/opatchprereqs/oui/knowledgesrc.xml 2 blocks
a ./OPatch/opatchprereqs/opatch/opatch_prereq.xml 60 blocks
a ./OPatch/opatchprereqs/opatch/rulemap.xml 5 blocks
a ./OPatch/opatchprereqs/opatch/runtime_prereq.xml 1 blocks
a ./OPatch/opatchprereqs/prerequisite.properties 1 blocks

opatch version
Invoking OPatch 10.2.0.4.3

OPatch Version: 10.2.0.4.3

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