I am using oracle 12c on windows.
A question about the duplicate from active database.
As I understand duplicate from active database is not using pre existing backup sets.
But I see duplicate from active database has two methods, one is push-based the other is pull-based.
The push based is to copy data files and log files from target to duplicate database, using more resource on target database server.
For pull based it uses:
duplicate .. from active database using backupset...
So what is the backupset? There is no backupset...
Does it mean it will first do a backup first ?
Thanks