053-200

Which operation requires that you create an auxiliary instance manually before executing the
operation? (Choose all that apply.)
A. Backup-based database duplication.
B. Active database duplication.
C. Tablespace point-in-time recovery.
D. No operation requires the creation of an auxiliary instance.

　　Database duplication(either backup-based or active) requires that you create the
parameter files for the auxiliary database instance and have the auxiliary database instance
started in NOMOUNT mode.