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單項(xiàng)選擇題

When determining the number of UNDO segments in a database, which of the following choices identifies a factor to consider? （）

A.Size of typical transactions
B.Concurrent transactions
C.Size of rows in table most frequently changed
D.Number of anticipated disk sorts

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單項(xiàng)選擇題

You are trying to determine how many disk sorts are happening on the database right now. Which of the following dictionary tables would you use to find that information?（）

A.V$SESSION
B.V$SYSSTAT
C.DBA_SEGMENTS
D.V$SORT_USAGE

單項(xiàng)選擇題

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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