單項選擇題

The DBA is defining role for users. Which of the following is not an acceptable method for defining a default role?（）

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

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單項選擇題

You are defining areas on your Oracle database. Which of the following profile areas can be used to control the resource usage for the other four?（）

A.LOGICAL_READS_PER_SESSION
B.CONNECT_TIME
C.COMPOSITE_LIMIT
D.CPU_PER_SESSION
E.PRIVATE_SGA

單項選擇題

In a situation where no multiplexing of redo logs takes place, what happens when Oracle cannot read data from the online redo log group for archiving?（）

A.Nothing happens
B.Oracle will automatically switch redo logs when detected
C.Oracle eventually won't allow new records to be added to the database
D.The instance crashes

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