单项选择题

To determine the space allocated for temporary segments, the DBA can access which of the following views? （）

A.DBA_TABLESPACES
B.DBA_TABLES
C.DBA_SEGMENTS
D.DBA_FREE_SPACE

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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.

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

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