单选题Which statement is true about a whole consistent database backup on a database running in ARCHIVELOG mode（）AThe backup will consist of used data blocks only.BThe database must be shut down to accomplish the backup.CThe backup can be accomplished without shutting down the database.DThe backup will contain all database files that have never been backed up.
单选题
Which statement is true about a whole consistent database backup on a database running in ARCHIVELOG mode（）
A
The backup will consist of used data blocks only.
B
The database must be shut down to accomplish the backup.
C
The backup can be accomplished without shutting down the database.
D
The backup will contain all database files that have never been backed up.
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