OPATCH apply fails with the error: OUI-67124:Archive not applied and Failed file pair information (archive)

DB and O/S Version:

11.2.0.3.0 on Linux 64 bit


Scenario:

Applying April 14 PSU (18031683)


Error:

Received the following error stack on applying one of the patches bundled with the PSU

The following actions have failed:
OUI-67124:Archive not applied /stage/software/18031683/17540582/files/lib/libserver11.a/kcb.o to $ORACLE_HOME/lib/libserver11.a... ''
Do you want to proceed? [y|n]
Finish saving patch to inventory at Thu May 15 07:24:18 EDT 2014
Verifying the update...
Inventory check OK: Patch ID 17540582 is registered in Oracle Home inventory with proper meta-data.
erifying 21 copy files.
verifying 112 archive files.
Failed file pair information (archive)::
Source file name is : /stage/software/18031683/17540582/files/lib/libserver11.a/kcb.o,  size is : 1118552
Destination file name (extracted from Oracle Home) is : $ORACLE_HOME/.patch_storage/verify/archive/lib/libserver11.a/kcb.o,  size is : 1114480
Failed file pair information (archive)::
Source file name is : /stage/software/18031683/17540582/files/lib/libserver11.a/kcbb.o,  size is : 395968
Destination file name (extracted from Oracle Home) is : $ORACLE_HOME/.patch_storage/verify/archive/lib/libserver11.a/kcbb.o,  size is : 396400
.......
.......
verifying 5 plugin actions.
There are 82 archive files under ORACLE_HOME that are not patched.
OUI-67124:Files check failed: Some files under ORACLE_HOME are not patched. Please see log file for details.
OUI-67124:ApplySession failed in system modification phase... 'Verification of patch failed: Files are not updated completely.'

Reason:

The failure was due to insufficient storage space in the ORACLE_HOME mount point where the patch was also staged.

Solution:

Make sure we have sufficient free space available in the storage location where Oracle Home is installed.

Clear old trace/log files or old staging software and reclaim enough space.

Re run the patch