[SOLVED] Opatch fails after uncompleted or interrupted patch

[chrisplough]

I faced with a problem today during my AS 10g upgrade which involves applying
different patches sequentially.

Opatch failed with the following message:

Problems with the lock file
Lock file exists, details are:
 Interim Patch  is holding the lock from xxxxxxx,
 probably due to previous unsuccessful operation

ERROR: OPatch failed during pre-reqs check

Opatch creates patch_locked in $ORACLE_HOME/.patch_storage during running of patch. If for some reason opatch run was interrupted or canceled , this file may not be removed. As the result, further opatch run can find this patch and will fail because of this file.

To resolve, delete this file.

Hope this helps!

--Chris