Choose two. Which two are true about RMAN duplexed backup sets?
A.They must be written to media. B.They can be written only to disk. C.They can be created only by using the COPIES option of a BACKUP command. D.They can be created by using the RMAN CONFIGURE command to specify正确答案DE
Duplexing before taking a backup. E.They can be written to media.
