Backup-based duplication uses an RMAN backup of the target (source) database as its source to create the data files in the auxiliary (destination) environment. There are two types of RMAN backup-based duplication:
- No connection to the target database (or a recovery catalog) is required. This is referred to as targetless duplication. This technique only requires a connection to the auxiliary database. Targetless duplication is available in Oracle 11g release 2 and higher.
- In some types of backup-based duplication, a connection to both the target database (or a recovery catalog) and the auxiliary database is required. ...