单项选择题
You are attempting to clear an unarchived redo log file. In order to manually enact a log switch, which of the following statements is appropriate?（）
A.ALTER DATABASE
B.ALTER SYSTEM
C.ALTER USER
D.ALTER REDO LOG
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相关考题
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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 -
单项选择题
TheDBAisdefiningroleforusers.Whichofthefollowingisnotanacceptablemethodfordefiningadefaultrole?（）
A.ALTER USER DEFAULT ROLE ALL
B.ALTER USER DEFAULT ROLE ALL EXCEPT ROLE_1
C.ALTER USER DEFAULT ROLE NONE
D.ALTER USER DEFAULT ROLE NONE EXCEPT ROLE_1 -
单项选择题
YouaredefiningareasonyourOracledatabase.Whichofthefollowingprofileareascanbeusedtocontroltheresourceusagefortheotherfour?（）
A.LOGICAL_READS_PER_SESSION
B.CONNECT_TIME
C.COMPOSITE_LIMIT
D.CPU_PER_SESSION
E.PRIVATE_SGA
