It is needed as some steps will be applied if it is upgraded from 11 to 12..
here is the output :
$ grep -i "s_rapidwizloc" /xxxxx/inst/apps/XXXXX_host/appl/admin/XXXXX_host.xml
$ grep -i "s_installloc" /xxxxx/inst/apps/XXXXX_host/appl/admin/XXXXX_host.xml
How we can check then please if it is a fresh R12 installation or an upgraded from 11i? ?
Query AD_BUGS for "6678700" which is the upgrade patch driver for 11i. If the patch exists then the instance was upgraded from 11i, otherwise it's a fresh install.