EM 13C : Applying PSU Patch On Oracle Management Service (OMS) side Fails With "OMSPatcher failed with error code 238" (Doc ID 2513971.1)

$OMS_HOME/OMSPatcher/omspatcher apply -analyze
Running apply prerequisite checks for sub-patch(es) "28970534" and Oracle Home "<OMS_HOME>"...
Prerequisite checks FAILED for sub-patch(es) "28970534". 

Complete Summary

All log file names referenced below can be accessed from the directory "<OMS_HOME>/cfgtoollogs/omspatcher/<TIMESTAMP>_SystemPatch_28970534_1"

Prerequisites analysis summary:

-------------------------------

The following sub-patch(es) are not applicable:
Featureset Sub-patches Log file

---------- ----------- --------

oracle.sysman.top.oms 28970534 28970534_opatch<TIMESTAMP>_1.log
[ Error during Run sub-patch(es) binary prerequisite checks Phase]. Detail: Some of the prerequisite checks to apply or rollback the patch(es) have failed.
OMSPatcher failed: Some of the prerequisite checks to apply or rollback the patch(es) have failed.
Log file location: <OMS_HOME>/cfgtoollogs/omspatcher/28970534/omspatcher_<TIMESTAMP>_analyze.log
Recommended actions: Please refer log file(s) for more details on the errors. Please contact Oracle Support.
OMSPatcher failed with error code 238

[ Prerequisite Status: FAILED, Prerequisite output:
Summary of Conflict Analysis: 

There are no patches that can be applied now.
Following patches have conflicts. Please contact Oracle Support and get the merged patch of the patches :

28970534
Conflicts/Supersets for each patch are: 

Patch : 28970534
Bug Superset of 27612395
Super set bugs are:

26364865, 25861385, 24953203, 26782615, 23549064, 22901546, 24944461, 24753427, 24734911, 25110496, 27657400, 25570899, 26901113, 23556674, 26027847, 26585786, 25497622, 25217253, 26542313, 25551082, 25956002, 26799184, 26911158, 25873874, 25044101, 23251874, 25701178, 25121269, 25179524, 25219896, 25244726, 25268183, 27648040, 23196054, 26537486, 24608207, 24426862, 23743109, 26782785, 25868747, 25797731, 25444652, 25534065, 25190630, 27038375, 23506806, 26805603, 21470098, 26436736, 26680573, 26594300, 23619694, 24742172, 26831222, 25341210, 20511097, 25255429, 25967196, 25354849, 25355038, 25326446, 25497731, 24789016, 24459731, 24614251, 26944089, 25615522, 24334660, 27219479, 24917276, 24701883, 25163555, 26090681, 26417289, 25994636, 22671015, 23698997, 25506784, 26161437, 25136456, 27186708, 25580610, 22143858, 25674055, 25230688, 23705752 

.
.
.

Bug Superset of 27116243
Super set bugs are:

26364865, 25861385, 24953203, 26782615, 23549064, 22901546, 24944461, 24753427, 24734911, 25110496, 25570899, 26901113, 26027847, 26585786, 25497622, 25217253, 26542313, 25551082, 25956002, 26799184, 25044101, 23251874, 25701178, 25121269, 25179524, 25219896, 25244726, 25268183, 23196054, 24608207, 24426862, 23743109, 26782785, 25868747, 25797731, 25444652, 25534065, 25190630, 23506806, 21470098, 26436736, 26680573, 26594300, 23619694, 24742172, 25341210, 20511097, 25255429, 25967196, 25354849, 25355038, 25326446, 25497731, 24789016, 24459731, 24614251, 26944089, 25615522, 24334660, 27219479, 24917276, 24701883, 25163555, 26090681, 26417289, 25994636, 22671015, 23698997, 25506784, 25136456, 25580610, 22143858, 25674055, 25230688, 23705752]

[Feb 9, 2019 1:48:10 PM] Prerequisite checks FAILED for sub-patch(es) "28970534".

.

[Feb 9, 2019 1:48:10 PM] Prerequisites analysis summary:

-------------------------------

The following sub-patch(es) are not applicable:
oracle.sysman.top.oms:28970534