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【单选题】

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

更多“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?()  ”相关的问题
第2题

A、A. From the Advisor Central home page,select the tuning task from the Advisor Tasks section   B、B. From Advisor Central,choose SQL Advisors,SQL Tuning Advisors,Manual Tuning Task Results  C、C. From Advisor Central,choose SQL Advisors,Manual SQL Tuning Advisors,Tuning Task Results  D、D. Either B or C  

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第8题

A、 The database must be in the ARCHIVELOG mode.  B、 The automatic memory tuning must be enabled.  C、 The change tracking feature must be enabled.  D、 The automatic memory tuning must be disabled.  

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