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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.)
Correct Answer: B,C,D
Explanation/Reference: Explanation: To ensure that the source database is in the proper state: 1. If the source database instance is not mounted or open, then mount or open it. 2. If you are performing active database duplication, then ensure that the following additional requirements are met: If the source database is open, then archiving must be enabled. If the source database is not open, then the database does not require instance recovery. (Tips: does not require instance recovery, means you cannot shutdown the source database with abort option, you need to shutdown it cleanly.) Starting RMAN and Connecting to Databases: In this task, you must start the RMAN client and connect to the database instances required by the duplication technique chosen in "Step 1: Choosing a Duplication Technique". The RMAN client can be located on any host so long as it can connect to the necessary databases over the network.