单项选择题

To allocate another role to a user, which command is most appropriate?（）

A.ALTER USER
B.ALTER DATABASE
C.ALTER SYSTEM
D.GRANT

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热门试题

单项选择题

Youareattemptingtoclearanunarchivedredologfile.Inordertomanuallyenactalogswitch,whichofthefollowingstatementsisappropriate?（）

A.ALTER DATABASE
B.ALTER SYSTEM
C.ALTER USER
D.ALTER REDO LOG

单项选择题

YouareanalyzingthecomponentsoftheredologmechanismsinyourOracledatabase.WhichofthefollowingpurposesdoestheCKPTprocessserve?（）

A.Writes buffers to disk
B.Writes current redo log number to datafile headers
C.Writes redo log information to disk
D.Reads information into memory for users