It was possible to merge several Oracle patch into one, if you have several Oracle applications patch which was fall under the same unified driver family.

Steps: -

1. Create Source and destination directory

2. Copy all the Oracle patches to source directory

3. Run the below scripts

admrgpch -s /home/applmgr/patch_directory/source -d /home/applmgr/patch_directory/destination -merge_name merge_patch_output

Executing the merge of the patch drivers

– Processing patch: /home/applmgr/patch_directory/source/4888294 — Done processing patch: /home/applmgr/patch_directory/source/4888294
– Processing patch: /home/applmgr/patch_directory/source/4653225 — Done processing patch: /home/applmgr/patch_directory/source/4653225
– Processing patch: /home/applmgr/patch_directory/source/5985992 — Done processing patch: /home/applmgr/patch_directory/source/5985992
– Processing patch: /home/applmgr/patch_directory/source/6502082 — Done processing patch: /home/applmgr/patch_directory/source/6502082

Copying files…
5% complete. Copied 98 files of 1942…
10% complete. Copied 195 files of 1942…
15% complete. Copied 292 files of 1942…
20% complete. Copied 389 files of 1942…
25% complete. Copied 486 files of 1942…
30% complete. Copied 583 files of 1942…
35% complete. Copied 680 files of 1942…
40% complete. Copied 777 files of 1942…
45% complete. Copied 874 files of 1942…
50% complete. Copied 971 files of 1942…
55% complete. Copied 1069 files of 1942…
60% complete. Copied 1166 files of 1942…
65% complete. Copied 1263 files of 1942…
70% complete. Copied 1360 files of 1942…
75% complete. Copied 1457 files of 1942…
80% complete. Copied 1554 files of 1942…
85% complete. Copied 1651 files of 1942…
90% complete. Copied 1748 files of 1942…
95% complete. Copied 1845 files of 1942…
100% complete. Copied 1942 files of 1942…

Character-set converting files…
4 unified drivers merged.
Patch merge completed successfully
Please check the log file at ./admrgpch.log.

Once the admrgpch completed, you will have the 4 in 1 Oracle patches file which was merge_patch_output in this case. Applying this Oracle patch (merge_patch_output) will equals to apply the 4 patch file, which will lead in time saving for Oracle patching process.