601.You need to perform a block media recovery on the tools01.dbf data file in the SALES database by using Recovery Manager (RMAN).
Which two are the prerequisites to perform this operation? (Choose two)
A. You must configure block change tracking file
B. You must have first level 1 backups for RMAN to restore blocks
C. You must ensure that the SALES database is mounted or open
D. You must have full or level 0 backups for RMAN to restore blocks
E. You must take the tools01.dbf data file offline before you start a block media recovery
Answer: CD
进行数据文件的块恢复，数据库必须MOUNT或OPEN；
必须有包含坏块所在数据文件全部数据块的全备份或0级备份，非0级增量备份因不包含全部数据块而不能使用。
Which two are the prerequisites to perform this operation? (Choose two)
A. You must configure block change tracking file
B. You must have first level 1 backups for RMAN to restore blocks
C. You must ensure that the SALES database is mounted or open
D. You must have full or level 0 backups for RMAN to restore blocks
E. You must take the tools01.dbf data file offline before you start a block media recovery
Answer: CD
进行数据文件的块恢复，数据库必须MOUNT或OPEN；
必须有包含坏块所在数据文件全部数据块的全备份或0级备份，非0级增量备份因不包含全部数据块而不能使用。
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/81227/viewspace-2120810/ ，如需转载，请注明出处，否则将追究法律责任。
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