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單項(xiàng)選擇題

While working on the database, you receive the following error:       
01578: ORACLE data block corrupted (file# 6, block # 54)       
ORA-01110 : data file 6: ’u01/oracle/oradata/data1.dbf’  
You decide to recover the corrupted data block by using the Block Media Recovery feature. Which option is NOT a disadvantage of using block media recovery?()

A. Block Media Recovery must be used with RMAN.
B. You must perform complete recovery of individual blocks.
C. You must have a full RMAN backup, not an incremental backup.
D. You must use the DBVERIFY utility before using the Block Media Recovery feature.

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