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單項(xiàng)選擇題

You are maintaining the SALES database of TeleStar Corporation. The online redo log configuration of the database is as follows：  

One of the redo log members， redo3b， is lost due to disk failure.   How will you recover the redo log member redo3b？（）

A. by performing an incomplete recovery from the last backup
B. by performing an import operation
C. by performing a complete database recovery
D. by dropping the lost member and adding a new redo log member

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