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多选题
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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更多 “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 size of the objects accessed.DIt generates recommendations to run SQL Tuning Advisor to tune regressed SQLs.EIt shows only the overall impact on workload and not the net SQL impact on workload.” 相关考题
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Identify three scenarios in which you would recommend the use of SQL Performance Analyzer to analyzeimpact on the performance of SQL statements.()
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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.
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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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Which of these appropriately describes the results of a manual SQL Tuning Advisor task？（） A、 A list of SQL statements and recommendations for tuningB、 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 changesD、 All of the above
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Which three statements about performance analysis by SQL Performance Analyzer are true? （）(Choose three.)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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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.
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Which of these appropriately describes the results of a manual SQL Tuning Advisor task?（）A、A list of SQL statements and recommendations for tuningB、A list of SQL statements that have been tuned by the Advisor, with before and after metricsC、Graphs showing the actual performance improvement made by the Advisor after it implemented the recommended changesD、All of the above
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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.
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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.
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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.
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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.
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What happens when you run the SQL Tuning Advisor with limited scope?（）A、Access pathanalysis 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.
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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 versionB、Change in your network infrastructureC、Change in the hardware configuration of the database serverD、Migration of database storage from non-ASM to ASM storageE、Database and operating system upgrade
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多选题Identify three scenarios in which you would recommend the use of SQL Performance Analyzer to analyzeimpact on the performance of SQL statements.（）AChange in the Oracle Database versionBChange in your network infrastructureCChange in the hardware configuration of the database serverDMigration of database storage from non-ASM to ASM storageEDatabase and operating system upgrade
考题
单选题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.
考题
单选题Which of these appropriately describes the results of a manual SQL Tuning Advisor task?（）A
A list of SQL statements and recommendations for tuningB
A list of SQL statements that have been tuned by the Advisor, with before and after metricsC
Graphs showing the actual performance improvement made by the Advisor after it implemented the recommended changesD
All of the above
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单选题You received complaints about the degradation of SQL query performance. You identified top SQL queries that consume time. What would be your next step to find out recommendations about statistics collection and restructuring of the SQL statement to improve query performance？（）A
run Segment AdvisorB
run SQL Tuning Advisor on top SQL statementsC
run the Automatic Workload Repository （AWR） reportD
run the Automatic Database Diagnostic Monitor （ADDM）on top SQL statements
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多选题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?（）AThe plan baselines can be evolved over time to produce better performance.BThe newly generated plans are directly placed into the SQL plan baseline without being verified.CThe new SQL statements initially run with the plans that are known to produce good performance under standard test configuration.DThe optimizer does not generate new plans for the SQL statements for which the SQL plan baseline has been imported.
考题
多选题When executing a SQL workload，you choose to generate execution plans only， without collecting execution statistics. Which two statements describe the implications of this？（）AIt produces less accurate results of the comparison analysis.BIt automatically calls the SQL Tuning Advisor for recommendations.CIt shortens the time of execution and reduces the impact on system resources.DOnly the changes in the execution plan，and not performance regression，are detected.
考题
单选题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.
考题
多选题Which three statements about performance analysis by SQL Performance Analyzer are true? （）(Choose three.)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 size of the objects accessed.DIt generates recommendations to run SQL Tuning Advisor to tune regressed SQLs.EIt shows only the overall impact on workload and not the net SQL impact on workload.
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多选题Which three statements about subqueries are true? （）AAsinglerowsubquerycanretrieveonlyonecolumnandonerow.BAsinglerowsubquerycanretrieveonlyonerowbutmanycolumns.CAmultiplerowsubquerycanretrievemultiplerowsandmultiplecolumns.DAmultiplerowsubquerycanbecomparedusingthe；；；operator.EAsinglerowsubquerycanusetheINoperator.FAmultiplerowsubquerycanusethe；=；operator.
考题
单选题Which of these appropriately describes the results of a manual SQL Tuning Advisor task？（）A
A list of SQL statements and recommendations for tuningB
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 changesD
All of the above
考题
多选题What happens when you run the SQL Tuning Advisor with limited scope?（）AAccess pathanalysis is not performed for SQL statements.BSQL structure analysis is not performed for SQL statements.CSQL Profile recommendations are not generated for SQL statements.DStaleness 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.
考题
单选题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.
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