多选题Which two statements about the SQL Management Base (SMB) are true? （）(Choose two.)AIt contains only SQL profiles generated by SQL Tuning Advisor.BIt stores plans generated by the optimizer using a stored outline.CIt is part of the data dictionary and s

第1题：

Which is the source used by Automatic SQL Tuning that runs as part of the AUTOTASK framework? （）

• A、SQL statements that are part of the AWR baseline only 
• B、SQL statements based on the AWR top SQL identification
• C、SQL statements that are part of the available SQL Tuning Set (STS) only 
• D、SQL statements that are available in the cursor cache and executed by a user other than SYS 

第2题：

When executing a SQL workload, you choose to generate execution plans only, without collecting execution statistics. Which two statements describe the implications of this? （）(Choose two.)

• A、It produces less accurate results of the comparison analysis.
• B、It automatically calls the SQL Tuning Advisor for recommendations.
• C、It shortens the time of execution and reduces the impact on system resources.
• D、Only the changes in the execution plan, and not performance regression, are detected.

第3题：

Which statement is true when you run the SQL Tuning Advisor with limited scope？（）

• A、Access path analysis is not performed for the SQL statements.
• B、SQL structure analysis is not performed for the SQL statements.
• C、SQL Profile recommendations are not generated for the SQL statements.
• D、The staleness and absence of the statistics are not checked for the objects in the query supplied to the SQL Tuning Advisor.

第4题：

Which two statements regarding a SQL profile are true？（）

• A、 It is built by Automatic Tuning Optimizer.
• B、 It cannot be stored persistently in the data dictionary.
• C、 It can be used by the query optimizer automatically.
• D、 It can be created manually by using the CREATE PROFILE command.

第5题：

What happens when you run the SQL Tuning Advisor with limited scope?（）

• A、Access path analysis is not performed for SQL statements.
• B、SQL structure analysis is not performed for SQL statements.
• C、SQL Profile recommendations are not generated for SQL statements.
• D、Staleness and absence of statistics are not checked for the objects in the SQL Tuning Advisor. In this case, SQL Tuning Advisor produces recommendations based on statistical checks, access path analysis, and SQL structure analysis. SQL profile recommendations are not generated.

第6题：

Which three statements about performance analysis by SQL Performance Analyzer are true？（）

• A、 It detects changes in SQL execution plans.
• B、 It produces results that can be used to create the SQL plan baseline.
• C、 The importance of SQL statements is based on the size of the objects accessed.
• D、 It generates recommendations to run SQL Tuning Advisor to tune regressed SQLs.
• E、 It shows only the overall impact on workload and not the net SQL impact on workload.

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第13题：

While deploying a new application module, the software vendor ships the application software along with appropriate SQL plan baselines for the new SQLs being introduced. Which two statements describe the consequences?（）

• A、The plan baselines can be evolved over time to produce better performance.
• B、The newly generated plans are directly placed into the SQL plan baseline without being verified.
• C、The new SQL statements initially run with the plans that are known to produce good performance under standard test configuration.
• D、The optimizer does not generate new plans for the SQL statements for which the SQL plan baseline has been imported.

第14题：

Which two statements about the SQL Management Base (SMB) are true? （）(Choose two.)

• A、It contains only SQL profiles generated by SQL Tuning Advisor.
• B、It stores plans generated by the optimizer using a stored outline.
• C、It is part of the data dictionary and stored in the SYSAUX tablespace.
• D、It is part of the data dictionary and stored in the SYSTEM tablespace.
• E、It contains the statement log, the plan history, plan baselines, and SQL profiles.

第15题：

Your system has been upgraded from Oracle Database 10g to Oracle Database 11g. You imported SQL Tuning Sets （STS） from the previous version. After changing the  OPTIMIZER_FEATURE_ENABLE parameter to 10.2.0.4 and running the SQL Performance Analyzer， you observed performance regression for a few SQL statements.  What would you do with these SQL statements？（）

• A、 Set OPTIMIZER_USE_PLAN_BASELINES to FALSE to prevent the use of regressed plans.
• B、 Capture the plans from the previous version using STS and then load them into the stored outline.
• C、 Capture the plans from the previous version using STS and then load them into SQL Management Base （SMB）
• D、 Set OPTIMIZER_CAPTURE_SQL_PLAN_BASELINES to FALSE to prevent the plans from being loaded to the SQL plan baseline.

第16题：

Which three are the valid statements in relation to SQL plan baselines？（）

• A、 The plans can be manually loaded to the SQL plan baseline.
• B、 The plans in the SQL plan baseline are verified and accepted plans.
• C、 The plans generated for every SQL statement are stored in the SQL plan baseline by default. 
• D、 The plan baselines are stored temporarily in the memory as long as the database instance is running.
• E、 For the SQL plan baselines to be accessible to the optimizer， the SYSAUX tablespace must be online.

第17题：

Which three statements are true about adaptive SQL plan management?（）

• A、It automatically performs verification or evolves non-accepted plans, in COMPREHENSIVE mode when they perform better than existing accepted plans.
• B、The optimizer always uses the fixed plan, if the fixed plan exists in the plan baseline.
• C、It adds new, bettor plans automatically as fixed plans to the baseline.
• D、The non-accepted plans are automatically accepted and become usable by the optimizer if they perform better than the existing accepted plans.
• E、The non-accepted plans in a SQL plan baseline are automatically evolved, in COMPREHENSIVE mode, during the nightly maintenance window and a persistent verification report is generated.

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