Applying GI PSU 11.2.0.1.2 (9655006) on 11.2.0.1 fails with 

"The opatch Component check failed"

Application of the GI PSU 11.2.0.1.2 failed with following error.. Though the pre-requisite of having OPatch version was clearly satisfied after upgrading OPatch to 11.2.0.3 using patch p6880880 as per MOS note.

Error - 

[root@appsractest 11.0]# opatch auto /u01/app/grid/11.0/stage  -oh /u01/app/grid/11.0
Executing /usr/bin/perl /u01/app/grid/11.0/OPatch/crs/patch112.pl -patchdir /u01/app/grid/11.0 -patchn stage -oh /u01/app/grid/11.0 -paramfile /u01/app/grid/11.0/crs/install/crsconfig_params
opatch auto log file location is /u01/app/grid/11.0/OPatch/crs/../../cfgtoollogs/opatchauto2012-11-07_06-24-58.log
Detected Oracle Clusterware install
Using configuration parameter file: /u01/app/grid/11.0/crs/install/crsconfig_params
OPatch  is bundled with OCM, Enter the absolute OCM response file path:
/home/oracle/ocm.rsp
The opatch minimum version  check for patch /u01/app/grid/11.0/stage/9655006 failed  for /u01/app/grid/11.0
The opatch minimum version  check for patch /u01/app/grid/11.0/stage/9654983 failed  for /u01/app/grid/11.0
Opatch version check failed for oracle home  /u01/app/grid/11.0
Opatch version  check failed

Fix - 
There are mainly two possible reasons for this...

1. Multiple patches in the directory. 
Make sure you have only one patch unzipped in the directory specified as patch top. If there are multiple patches then the OPatch will fail.

2. Permission issues when trying to write to hidden patch_storage directory under GRID_HOME. When opatch is run it will try to update the info in patch_storage directory so that rollback of the patch is possible.
When OPatch auto is run (even as root), internally it will execute opatch utility with napply using Oracle user. So if the oracle user doesn't have the permissions to write to .patch_storage the opatch auto application will fail.
[root@appsractest 11.0]# cd /u01/app/grid/11.0
[root@appsractest 11.0]# ll .patch_storage/
total 4
-rw-r--r-- 1 root root 796 Nov  5 10:15 LsInventory__11-05-2012_10-15-08.log
[root@appsractest 11.0]# chown  oracle:oinstall .patch_storage/ -R
[root@appsractest 11.0]# ll .patch_storage/
total 4
-rw-r--r-- 1 oracle oinstall 796 Nov  5 10:15 LsInventory__11-05-2012_10-15-08.log
[root@appsractest 11.0]# chmod 777 .patch_storage/ -R
[root@appsractest 11.0]# ll .patch_storage/
total 4
-rwxrwxrwx 1 oracle oinstall 796 Nov  5 10:15 LsInventory__11-05-2012_10-15-08.log

Once done above two things, when you run the opatch again, it will go thru fine 
-- To update the GI home
[root@appsractest 11.0]# opatch auto /u01/app/grid/11.0/stage  -oh /u01/app/grid/11.0
Executing /usr/bin/perl /u01/app/grid/11.0/OPatch/crs/patch112.pl -patchdir /u01/app/grid/11.0 -patchn stage -oh /u01/app/grid/11.0 -paramfile /u01/app/grid/11.0/crs/install/crsconfig_params
opatch auto log file location is /u01/app/grid/11.0/OPatch/crs/../../cfgtoollogs/opatchauto2012-11-07_06-27-26.log
Detected Oracle Clusterware install
Using configuration parameter file: /u01/app/grid/11.0/crs/install/crsconfig_params
OPatch  is bundled with OCM, Enter the absolute OCM response file path:
/home/oracle/ocm.rsp
Successfully unlock /u01/app/grid/11.0
patch /u01/app/grid/11.0/stage/9655006  apply successful for home  /u01/app/grid/11.0
patch /u01/app/grid/11.0/stage/9654983  apply successful for home  /u01/app/grid/11.0
ACFS-9300: ADVM/ACFS distribution files found.
ACFS-9312: Existing ADVM/ACFS installation detected.
ACFS-9314: Removing previous ADVM/ACFS installation.
ACFS-9315: Previous ADVM/ACFS components successfully removed.
ACFS-9307: Installing requested ADVM/ACFS software.
ACFS-9308: Loading installed ADVM/ACFS drivers.
ACFS-9321: Creating udev for ADVM/ACFS.
ACFS-9323: Creating module dependencies - this may take some time.
ACFS-9327: Verifying ADVM/ACFS devices.
ACFS-9309: ADVM/ACFS installation correctness verified.
CRS-4123: Oracle High Availability Services has been started.

-- To Update RAC home

[root@appsractest ~]# export PATH=$PATH:/u01/app/oracle/product/11.0/db_1/OPatch/

[root@appsractest ~]# which opatch

/u01/app/oracle/product/11.0/db_1/OPatch/opatch

[root@appsractest ~]# opatch auto /u01/app/grid/11.0/stage -oh /u01/app/oracle/product/11.0/db_1

Executing /usr/bin/perl /u01/app/oracle/product/11.0/db_1/OPatch/crs/patch112.pl -patchdir /u01/app/grid/11.0 -patchn stage -oh /u01/app/oracle/product/11.0/db_1 -paramfile /u01/app/grid/11.0/crs/install/crsconfig_params

opatch auto log file location is /u01/app/oracle/product/11.0/db_1/OPatch/crs/../../cfgtoollogs/opatchauto2012-11-07_07-03-02.log

Detected Oracle Clusterware install

Using configuration parameter file: /u01/app/grid/11.0/crs/install/crsconfig_params

OPatch  is bundled with OCM, Enter the absolute OCM response file path:

/home/oracle/ocm.rsp

patch /u01/app/grid/11.0/stage/9655006/custom/server/9655006  apply successful for home  /u01/app/oracle/product/11.0/db_1

patch /u01/app/grid/11.0/stage/9654983  apply successful for home  /u01/app/oracle/product/11.0/db_1

-- Check the status of the resources for RAC Home and you will find that resources are started automatically after application of patch

[oracle@appsractest ~]$ srvctl  status database -d iedge

Instance iedge1 is running on node appsractest

-- Now when you try to see the applied patch history from OPatch, you will see that patch is applied...

9655006    9655006   Wed Nov 07 07:06:11 IST 2012   GI PSU 11.2.0.1.2 (INCLUDES DATABASE PSU 11.2.0.1.2)