664.You want to take a complete database backup using RMAN. The backup should consist only the used
blocks from your database.
Which two statements are true about this backup operation? (Choose two.)
A. Backup compression should be enabled
B. Parallelism for the channel should be set to 2
C. All the files must be backed up as backup sets
D. The backup may be stored either on disk or on media with media manager
Answer: CD
答案解析:
排除法,AB选项,备份使用过的块,在备份时可以不用压缩,也可以不用设置为两个并行通道。