單項選擇題

You issue this statement：ALTER DATABASE BACKUP CONTROLFILE TO TRACE；
What does the statement generate？（）

A.A text copy of the control file.
B.A binary copy of the control file.
C.A file containing a SQL statement which will re-create the database.
D.A file containing a SQL statement which will re-create the control file.

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單項選擇題

Which statement is true regarding checkpoints and recovery？（）

A.A checkpoint defines the highest system change number （SCN）.
B.All redo entries higher or at the SCN are known to be written to the data files.
C.Only the redo records containing SCNs higher then the checkpoint need to be applied during recovery.
D.The LOG_CHECKPOINT_INTERVAL initialization parameter specifies the amount of time between incremental checkpoints.

單項選擇題

In user-managed backup and recover procedures， how are data files backed up？（）

A.Using SQL commands.
B.Using SQL*Plus commands.
C.Using operating system commands.
D.Using Recover Manager commands.

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You issue this statement：ALTER DATABASE BACKUP CONTROLFILE TO TRACE； What does the statement generate？（）

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Which statement is true regarding checkpoints and recovery？（）

In user-managed backup and recover procedures， how are data files backed up？ （）

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You issue this statement：ALTER DATABASE BACKUP CONTROLFILE TO TRACE；
What does the statement generate？（）

Which statement is true regarding checkpoints and recovery？（）

In user-managed backup and recover procedures， how are data files backed up？（）