Step 1. Create two directory "source" and "dest"
cd home
mkdir source
mkdir dest
Step 2. Unzip patch into source directory.
cd home
$ ls -ltr pABC.zip
-rw-r--r-- 1 egaprt appseeg 0 Aug 18 06:06 pABC.zip
unzip pABC.zip -d source
Step 3: Now, Merge the patch
admrgpch -s source -d dest -merge_name ABC_merge
Step 4: Check the admrgpch.log logfile for any error