多选题Which three statements about performance analysis by SQL Performance Analyzer are true？（）AIt detects changes in SQL execution plans.BIt produces results that can be used to create the SQL plan baseline.CThe importance of SQL statements is based on the 

第1题：

Which of these appropriately describes the results of a manual SQL Tuning Advisor task?（）

• A、A list of SQL statements and recommendations for tuning
• B、A list of SQL statements that have been tuned by the Advisor, with before and after metrics
• C、Graphs showing the actual performance improvement made by the Advisor after it implemented the recommended changes
• D、All of the above

第2题：

Which two statements are true regarding the SQL Repair Advisor？（） 

• A、 The SQL Repair Advisor can be invoked to tune the performance of the regressed SQL statements.
• B、 The SQL Repair Advisor can be invoked even when the incident is not active for a SQL statement crash.
• C、 The SQL Repair Advisor is invoked by the Health Monitor when it encounters the problematic SQL statement.
• D、 The DBA can invoke the SQL Repair Advisor when he or she receives an alert generated when a SQL statement crashes and an incident is created in the ADR.

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：

You plan to use SQL Performance Analyzer to analyze the SQL workload. You created a SQL Tuning Set as a part of the workload capturing.  What information is captured as part of this process？（）

• A、 the SQL text
• B、 the execution plan
• C、 the execution context
• D、 the execution frequency
• E、 the system change number （SCN）

第5题：

You execute the following commands to audit database activities: SQL > ALTER SYSTEM SET AUDIT_TRIAL=DB, EXTENDED SCOPE=SPFILE; SQL > AUDIT SELECT TABLE, INSERT TABLE, DELETE TABLE BY JOHN By SESSION WHENEVER SUCCESSFUL; Which statement is true about the audit record that generated when auditing after instance restarts?（）

• A、One audit record is created for every successful execution of a SELECT, INSERT OR DELETE command on a table, and contains the SQL text for the SQL Statements.
• B、One audit record is created for every successful execution of a SELECT, INSERT OR DELETE command, and contains the execution plan for the SQL statements.
• C、One audit record is created for the whole session if john successfully executes a SELECT, INSERT, or DELETE command, and contains the execution plan for the SQL statements.
• D、One audit record is created for the whole session if JOHN successfully executes a select command, and contains the SQL text and bind variables used.
• E、One audit record is created for the whole session if john successfully executes a SELECT, INSERT,or DELETE command on a table, and contains the execution plan, SQL text, and bind variables used.

第6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?（）

• 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7题：

You want to analyze a SQL Tuning Set (STS) using SQL Performance Analyzer in a test database. Which two statements are true regarding the activities performed during the test execution of SQLs in a SQL Tuning Set?（）

• A、Every SQL statement in the STS is considered only once for execution
• B、The SQL statements in the STS are executed concurrently to produce the execution plan and execution statistics
• C、The execution plan and execution statistics are computed for each SQL statement in the STS
• D、The effects of DDL and DML are considered to produce the execution plan and execution statistics

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第13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14题：

You are maintaining the PROD database of NetFx Corporation. You set the value of the SQL_TRACE parameter to TRUE. What will be the impact of this setting？（）  

• A、 The SQL trace facility will generate the performance statistics for all the SQL statements for an instance and write them in the USER_DUMP_DEST directory.
• B、 The SQL trace facility will generate the performance statistics for all the SQL statements for a session and write them in the USER_DUMP_DEST directory.
• C、 The SQL trace facility will generate the performance statistics for all the SQL statements for an instance and write them in the BACKGROUND_DUMP_DEST directory.
• D、 The SQL trace facility will generate the performance statistics for all the SQL statements for a session and write them in the BACKGROUND_DUMP_DEST directory.

第15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16题：

You want to analyze a SQL Tuning Set （STS） using SQL Performance Analyzer in a test database. Which two statements are true regarding the activities performed during the test execution of SQLs in a SQL Tuning Set？（）

• A、 Every SQL statement in the STS is considered only once for execution.
• B、 The SQL statements in the STS are executed concurrently to produce the execution plan and execution statistics.
• C、 The execution plan and execution statistics are computed for each SQL statement in the STS. 
• D、 The effects of DDL and DML are considered to produce the execution plan and execution statistics.

第17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.

第18题：

Identify three scenarios in which you would recommend the use of SQL Performance Analyzer to analyzeimpact on the performance of SQL statements.（）

• A、Change in the Oracle Database version
• B、Change in your network infrastructure
• C、Change in the hardware configuration of the database server
• D、Migration of database storage from non-ASM to ASM storage
• E、Database and operating system upgrade

第19题：

You plan to use SQL Performance Analyzer to analyze the SQL workload. You created a SQL Tuning Set as a part of the workload capturing. What information is captured as part of this process?（）

• A、the SQL text SQL
• B、the execution plan
• C、the execution context
• D、the execution frequency
• E、the system change number (SCN)

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