单项选择题

Which of the following does the recover command not do？（）

A. Restore archived redo logs.
B. Apply archived redo logs.
C. Restore incremental backups.
D. Apply incremental backups.
E. Restore datafile images.

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多项选择题

Which of the following are valid until command options when attempting point-in-time recovery in RMAN？（）

A. until time
B. until change
C. until sequence
D. until SCN
E. until commit

单项选择题

What happens if you shutdown abort ASM instance?（）

A. The RDBMSs connected will shutdown abort too
B. CLUSTER SERVICE will shutdown
C. ASM wil do instance recovery after startup

单项选择题

While tuning a SQL statement, the SQL Tuning Advisor finds an existing SQL profile for the statement that has stale statistics available. What would the optimizer do in this situation?（）

A. It updates the existing SQL profiles with current statistics.
B. It makes the statistics information available to GATHER_STATS_JOB
C. It initiates the statistics collection process by running GATHER_STATS_JOB
D. It logs a warning message in the alert log so that the DBA can perform statistics collection manually.