多項(xiàng)選擇題

Which of the following cannot be used as input to the SQL Tuning Advisor?（） (Choose all that apply.)

A. A single SQL statement provided by a user
B. An existing SQL Tuning Set (STS)
C. A preprocessed Database Replay workload
D. A schema name
E. SQL statement identified in EM as using excessive resources

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單項(xiàng)選擇題

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.

單項(xiàng)選擇題

RMAN offers the equivalent of the SQL command alter database backup controlfile to trace.（）

A. True
B. False

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Which of the following cannot be used as input to the SQL Tuning Advisor?（） (Choose all that apply.)

你可能感興趣的試題

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?（）

RMAN offers the equivalent of the SQL command alter database backup controlfile to trace.（）