OPatch 12.2 not able to locate jdk

OPAtch 12.2. os not able to locate JDK

Some background

we have restart (non RAC) environment both GRID_HOME and DB_HOME are in 12.1.0.2  lso OPatch is in 12.1.

we are in the process of migrating to 12.2.0.1

First we are applying Latest PSU OCT2018 on 12.1.0.2 GRID_HOME

in order to apply latest PSU we downloaded Opatchh 12.2.  to GRID_HOME

for upgrading to 12.2. we are trying to apply latest PSU on existing 12.1.0.2 restart GRID home we are facing the below issue [root@cl15175 jdk]# /oracle/product/12.1.0.2/grid/OPatch/opatchauto apply /software/StageR12/software_12201/patch/28349311 -analyze OPatchauto session is initiated at Wed Jan 30 11:31:13 2019