We are about to upgrade Oracle from 11.2.0.3 to 12c on the databases in our ERP 6.0 systems (DEV, QAT then PROD) and I have a couple of questions.
1) What level of testing is required if we are upgrading the database only?
2) Do we need to freeze all development in this ERP landscape or can we transports from a system with a 12c database to a system with an 11.2.0.3 database?
Thanks for any answers or references to documents that can help
dennis