单项选择题

A.ALTER DATABASE OPEN；B.ALTER DATABASE CLEAR LOGFILE；C.……

After the recovery is complete， which command should you execute？（）

A.ALTER DATABASE OPEN；
B.ALTER DATABASE CLEAR LOGFILE；
C.ALTER DATABASE OPEN RESETLOGS；
D.ALTER DATABASE OPEN NORESETLOGS；

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单项选择题Whileconnectedtothedatabase，auseronaPCreceivesafatalerrorandthemachinereboots.Whichbackgroundprocesscleansupthefailedconnection？（）

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A.A
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