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單項(xiàng)選擇題

You issue the following statement:  
SQL> SELECT FIRSTNAME, LASTNAME FROM HR.EMPLOYEE; 
You receive the following error:        
01578: ORACLE data block corrupted (file# 6, block # 54)       
ORA-01110 : data file 6: ’u01/oracle/oradata/data1.dbf’  
How will you resolve this problem of data block corruption by reducing the mean time to recover (MTTR)?()

A. by using the DBMS_REPAIR package
B. by using the DBVERIFY utility
C. by using Block Media Recovery
D. by issuing the ANALYZE TABLE HR.EMPLOYEES VALIDATE STRUCTURE command

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