单选题hich of the following RMAN structures can data from a datafile span?（）ARMAN backup-set pieces spanning backup sets BRMAN backup-set pieces within a given backup sets CRMAN backups DRMAN channels ENone of the above
单选题
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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