单项选择题

hich of the following RMAN structures can data from a datafile span?（）

A.RMAN backup-set pieces spanning backup sets
B.RMAN backup-set pieces within a given backup sets
C.RMAN backups
D.RMAN channels
E.None of the above

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OCP 11G认证考试

hich of the following RMAN structures can data from a datafile span?（）