Which of the Following Statements About the Oracle Tools RMAN

Multiple Choice

Which of the following statements about the Oracle tools RMAN used to back up, restore, and recover database is correct?

A) Applies to the migration between different database platforms or versions
B) The shutdown window is small, and the downtime is related to the total data volume
C) Some data in the database can be migrated
D) Online physical backup without interrupting production system services