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?（）

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

时间：2022-01-06 20:24 关键词： OCP 11G认证考试

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