Which four are true about a Recovery Manager (RMAN) duplication without a TARGET connection? (Choose four.)
A.The NOREDO clause must be used if the backups of the database being duplicated were taken when the database was in NOARCHIVELOG mode. B.The UNDO TABLESPACE clause is always required when no connection exists to the TARGET instance. C.RMAN “pushes” the backups of the database to be duplicated over the network to the auxiliary instance. D.The NOREDO clause can be used if the backups of the database being duplicated were taken when the database was in ARCHIVE LOG mode. E.RMAN SBT-based backups of the database to be duplicated can be used by the auxiliary instance. F.The UNDO TABLESPACE clause is always required when no connection exists to the recovery catalog and the TARGET database is closed. G.The UNDO TABLESPACE clause is always required when no connection exists to the recovery catalog and the TARGET database is opened. H.RMAN disk-based backups of the database to be duplicated can be used by the auxiliary instance.正确答案ADEH
