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單項(xiàng)選擇題

Which of the following operations does not require Oracle to store information in an UNDO segments as part of the transaction?（）

A.INSERT
B.SELECT
C.UPDATE
D.DELETE

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單項(xiàng)選擇題

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

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

單項(xiàng)選擇題

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