
Getting to real magic
From a licensing perspective, however, just because you use less Oracle doesn't mean you will spend less on Oracle...
There is no "less" in oracle. It is an all or nothing deal. Oracle will happily charge you the same amount until you quit the contract. Therefore, the real reason must be to become absolutely free of oracle. There is only one way forward and that is a life without oracle. Port your application(s) and get rid of those strangling oracle contracts.