I was trying to apply path 11.2.0.2.11 on Grid and database homes:

# opatch auto /home/oracle/software/p16742320_112020_Linux-x86-64 -oh /oracle/11.2.0.2 -ocmrf /tmp/ocm.rsp


The opatch minimum version  check for patch /home/oracle/software/p16742320_112020_Linux-x86-64/16459322/custom/server/16459322 failed  for /oracle/11.2.0.2
The opatch minimum version  check for patch /home/oracle/software/p16742320_112020_Linux-x86-64/16619893 failed  for /oracle/11.2.0.2

In the log /opt/oracle/grid/OPatch/crs/../../cfgtoollogs/opatchauto2013-09-10_09-09-27.log

2013-09-10 09:09:39: The opatch minimum version  check for patch /home/oracle/software/p16742320_112020_Linux-x86-64/16619893 failed  for /oracle/11.2.0.2
2013-09-10 09:09:39: The opatch version check failed with following error
2013-09-10 09:09:39: bash: /oracle/11.2.0.2/OPatch/opatch: Permission denied

I discovered I had unzipped the opatch-software as root and that caused the problem. Change to oracle:oinstall :

# chown -R oracle:oinstall /oracle/11.2.0.2/OPatch

Now all is working just fine:

# opatch auto /home/oracle/software/p16742320_112020_Linux-x86-64 -oh /oracle/11.2.0.2 -ocmrf /tmp/ocm.rsp

Detected Oracle Clusterware install

Using configuration parameter file: /opt/oracle/grid/crs/install/crsconfig_params

Successfully unlock /oracle/11.2.0.2

patch /home/oracle/software/p16742320_112020_Linux-x86-64/16459322  apply successful for home  /oracle/11.2.0.2

patch /home/oracle/software/p16742320_112020_Linux-x86-64/16619893  apply successful for home  /oracle/11.2.0.2