OCP 1Z0 053 21

21.You are managing an Oracle Database 11g instance. You want to create a duplicate database for 
testing purpose. 
What are the prerequisites for performing the active database duplication? (Choose all that apply.) 
A. The source database backup must be copied over the net for test database. 
B. The source database must be run in ARCHIVELOG mode if the database is open. 
C. The source database must be shut down cleanly if the database is in mounted state. 
D. A net service name should be set up and a listener configured with the target as well as the source 
database. 

Answer: BCD 

http://docs.oracle.com/cd/B28359_01/backup.111/b28270/rcmdupdb.htm#BRADV89937

Step 2: Mount or Open the Source Database

Before beginning RMAN duplication, mount or open the source database it if it is not already mounted or open.If the source database is open, then archiving must be enabled. If the source database is not open, and if it is not a standby database,then it must have been shut down consistently.

http://docs.oracle.com/cd/B28359_01/backup.111/b28270/rcmdupdb.htm#BRADV89933

Step 2: Establish Oracle Net Connectivity to the Auxiliary Instance

The auxiliary instance must be available through Oracle Net if either of the following conditions is met:

• You use the RMAN client on a host other than the destination host.

• You duplicate from an active database.

When duplicating from an active database, you must first have connected as SYSDBA to the auxiliary instance by means of a net service name. This net service name must also be available on the source database instance. The source database instance, to which RMAN is connected as TARGET, uses this net service name to connect directly to the auxiliary database instance.