Oracle 12cR1. My Oracle Homes are not all at the same level of patching. PSUs have been applied to some, BPP have been applied to others. I know I can see which patches have been applied to the Oracle Home binaries thanks to opatch lsinventory but how can I make sure that the corresponding ./datapatch -verbose was run on each of the databases of that Oracle Home? In other words, how can I list all the patches that have been applied to an Oracle database?