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单项选择题Which of the following is a valid way of putting a tablespace named DAVE_TBS into hot backup mode?()  

A、 alter tablespace DAVE_TBS backup mode

B、 alter tablespace DAVE_TBS start backup

C、 alter tablespace DAVE_TBS begin backup

D、 alter tablespace DAVE_TBS backup begin

E、 alter tablespace DAVE_TBS backup

  • C
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