PostgreSQL
Oracle
For further details please see the "Upgrade APM -> How to Upgrade the APM Database" section of the APM 9.6 Installation and Upgrade Guide:
https://support.ca.com/cadocs/0/CA%20Application%20Performance%20Management%209%206-ENU/Bookshelf_Files/HTML/APM--Installation%20and%20Upgrade%20Guide/2233401.html
Thank you Lynn for posting this information for the community.
Mary