while applying latest Oracle database PSU (April 2018) on Oracle 12cR1 (12.1.0.2) on IBM AIX 7.1 Operating System the following errors were thrown:

Verifying the update…

There are 1 copy files under ORACLE_HOME that are not patched.
Files check failed: Some files under ORACLE_HOME are not patched. Please see log file for details.

ApplySession failed in system modification phase… ‘Verification of patch failed: Files are not updated completely.’

Restoring “/orcl/oratest/product/12.1.0.2” to the state prior to running NApply…

Checking if OPatch needs to invoke ‘make’ to restore some binaries…

OPatch was able to restore your system. Look at log file and timestamp of each file to make sure your system is in the state prior to applying the patch.

NApply restored the home. Please check your ORACLE_HOME to make sure:

– files are restored properly.

– binaries are re-linked correctly.

(use restore.[sh,bat] and make.txt (Unix only) as a reference. They are located under

“/orcl/oratest/product/12.1.0.2/.patch_storage/NApply/2018-04-19_12-37-29PM”

UtilSession failed: ApplySession failed in system modification phase… ‘Verification of patch failed: Files are not updated completely.’

Log file location: /orcl/oratest/product/12.1.0.2/cfgtoollogs/opatch/opatch2018-04-19_12-37-29PM_1.log

Solution:

use the latest Oracle OPatch utility you can download it from here:

https://updates.oracle.com/download/6880880.html

latest Opatch utility version (at the time of writing this article 🙂 ) is 12.2.0.1.13