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判断题
RMAN中的COPY命令与BACKUP命令生成的备份文件不同，BACKUP命令生成的备份集，文件中的数据是以RMAN的专有格式进行保存的。
A
对
B
错
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考题
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考题
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考题
单选题Which of the following RMAN structures can data from a datafile span？（）A
RMAN backup-set pieces spanning backup setsB
RMAN backup-set pieces within a given backup setC
RMAN backupsD
RMAN channelsE
None of the above
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