RMAN is connected to a target database instance and an auxiliary instance. You execute the command:
What is the outcome?
A.
RMAN uses the push method to transfer image copies.
B.
RMAN uses the push method to transfer backup sets.
C.
RMAN uses the pull method to restore files using backup sets.
D.
RMAN uses the pull method to restore files using image copies.
Explanation:
When RMAN performs active database duplication using backup sets, a connection is established with the source database and the auxiliary database. The auxiliary database then connects to the source database through Oracle Net Services and retrieves the required database files from the source database. This method of active database duplication is also to as the pull-based method.
Example:
DUPLICATE TARGET DATABASE TO dupdb
FROM ACTIVE DATABASE
PASSWORD FILE
SPFILE
NOFILENAMECHECK;
Incorrect Answers:
A, B, D: When active database duplication is performed using image copies, after RMAN establishes a connection with the source database, the source database transfers the required database files to the auxiliary database. Using image copies may require additional resources on the source database. This method is referred to as the push-based method of active database duplication.References: https://docs.oracle.com/database/121/BRADV/rcmdupdb.htm