单项选择题
A.DBA_TABLESPACES B.DBA_TABLES C.DBA_SEGMENTS D.DBA_FREE_SPACE
Bydefault,checkpointshappenatleastasoftenas（）.A.Redo lo...
单项选择题By default, checkpoints happen at least as often as（）.
A.Redo log switches. B.UPDATE statements are issued against the database. C.The SYSTEM tablespace is accessed. D.SMON coalesces free space in a tablespase.
Whichofthefollowingchoicesidentifiesadatabasecomponentt...
单项选择题Which of the following choices identifies a database component that will be used for multiplexing control files?（）
A.V$CONTROLFILE B.V$DATABASE C.init.ora D.DBA FILES
Flushingdirtybuffersoutofthebuffercacheisinfluencedtoth...
单项选择题Flushing dirty buffers out of the buffer cache is influenced to the greatest extent by which of the following process?（）
A.ARCH B.SMON C.LGWR D.SERVER
