Oracle DB 12c to 12c refresh and then inplace 19c upgrade
part of Oracle DB upgrade from 12c (12c will be on old DB serve) to 19c (19c will be on new DB server) , we want to copy the data in following format.
For this we want to do 12c to 12c RMAN refresh and do testing for a week regarding our application ,then do a in place upgrade of 12c to 19c on new DB server
Now in case of any data difference because of testing for a week , how to replicate it, is it be full RMAN refresh or OGG setup or do we have any other options?