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

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单项选择题

Which command will result in a trace file being created with the create controlfile command contained in it？（）

A. alter database backup controlfile
B. alter database backup controlfile to trace
C. alter database controlfile backup
D. alter database controlfile backup to ’/ora01/oracle/ctrl_backup.ctl’
E. alter database begin controlfile backup

单项选择题

What is the correct order of steps to perform an online database backup？（）
a. alter database begin backup
b. alter database end backup
c. Back up the database datafiles
d. Back up the archive log files
e. alter system switch logfile

A.a， b， c， d， e
B.e， d， a， b， c
C.a， c， b， d， e
D.d， b， c， a， e
E.a， c， b， e， d

单项选择题

Which is the correct command to put the database in ARCHIVELOG mode？（）

A. alter database archivelog
B. alter system enable archivelog mode
C. alter database enable archive
D. alter database archivelog enable
E. None of the above