How to get the current Patchset level of Oracle Applications products in R12 ?

1) Login to OAM

(Responsibility "Oracle Applications Manager", menu "OAM Support Cart")

and Navigate: Support Cart -> Applications Signature -> Collect -> Check "Product Information" box -> Click on "View" (eyeglasses)

This will display the following patchset information :

Application Name
Current Patch Level
Product Version
Status (Installed, Shared Product, Inactive)

2) The patchset level information can be retrieved directly via sqlplus with the following diagnostic script :

$AD_TOP/sql/adutconf.sql