AutoPatch error: ORA-20001: Invalid application shortname : GHG while upgrading from R12.1.3 to R12.
as following the documents
Oracle E-Business Suite Upgrade Guide Release 12.0 and 12.1 to 12.2 Part Number E48839-09
URL: http://docs.oracle.com/cd/E26401_01/doc.122/e48839/toc.htm
at point
11.Run the American English upgrade patch driver (required)
i download the patches from the Document 1448102.2 against 12.2.0 as mentioned in Oracle E-Business Suite Release Notes, Release 12.2 ( Doc ID: 1320300.1 )
at patch_dir make two directory and copy patches
mkdir 18007406_source ( copy all 35 patches with patch 18007406 )
mkdir 18007406_mrg
admrgpch -s 18007406_source -d 18007406_mrg
merge successfully
cd 18007406_mrg
load apps environment from fs1
adpatch preinstall=y
merge successfully
cd $AU_TOP/patch/115/driver
admrgpch -d . -preinstall -master u10124646.drv