多选题
AYou must ensure that the SALES database is mounted or open.
BYou must restore a backup control file to perform a block media recovery.
CYou must take the tools01.dbf data file offline before you start a block media recovery.
DYou must put the database in NOARCHIVELOG mode to perform a block media recovery.
EYou can perform only a complete media recovery of individual blocks； point-in-time recovery of individual data blocks is not supported.
正确答案
答案解析
略
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