网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
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.
参考答案
更多 “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.” 相关考题
考题
You have an SQL query that takes one minute to execute. You use the following code segment to execute theSQL query asynchronously.Dim ar As IAsyncResult = cmd.BeginExecuteReader()You need to execute a method named DoWork() that takes one second to run while the SQL query is executing.DoWork() must run as many times as possible while the SQL query is executing.Which code segment should you use?（）A.B.C.D.
考题
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 SQLB. the execution planC. the execution contextD. the execution frequencyE. the system change number (SCN)
考题
Identify the two direct sources from where SQL plans can be loaded into the SQL plan baselines.()
A. Cursor cacheB. Stored outlineC. SQL Tuning SetD. Automatic Workload Repository (AWR) snapshots
考题
What is true about a background engine? ()(Choose two.)
A. It is a server-side PL/SQL procedure.B. When executing a PL/SQL function activity, it will automatically ping (cache) the PL/SQL code.C. It executes deferred activities in decreasing order of their Cost property value (activities with higher cost value are processed first).D. It would fail if another background engine process is started to handle the same type of activities within the same item type.E. During its single invocation, it processes activities that were stuck, deferred or timed out when the background engine was started.
考题
Your database supports an online transaction processing (OLTP) application.The application is undergoing some major schema changes, such as addition of new indexes and materialized views.You want to check the impact of these changes on workload performance.What should you use to achieve this?（）A. Database replayB. SQL Tuning AdvisorC. SQL Access AdvisorD. SQL Performance AnalyzerE. Automatic Workload Repository compare reports
考题
Your database supports a DSS workload that involves the execution of complex queries: Currently, the library cache contains the ideal workload for analysis. You want to analyze some of the queries for an application that are cached in the library cache.What must you do to receive recommendations about the efficient use of indexes and materialized views to improve query performance?（）A. Create a SQL Tuning Set (STS) that contains the queries cached in the library cache and run the SQL Tuning Advisor (STA) on the workload captured in the STS.B. Run the Automatic Workload Repository Monitor (ADDM).C. Create an STS that contains the queries cached in the library cache and run the SQL Performance Analyzer (SPA) on the workload captured in the STS.D. Create an STS that contains the queries cached in the library cache and run the SQL Access Advisor on the workload captured in the STS.
考题
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.
考题
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.
考题
A database administrator would like to examine repartitioning options for a partitioned database named PRODDB. A workload has been captured on the system (Windows) and is stored in a file named WORKLOAD.SQL. What is the proper command to run the Design Advisor so that it will evaluate the information stored in the file and give advice on re-partitioning?（）A、db2advis -d proddb -i workload.sql -P B、db2advis -d proddb -i workload.sql -partitioning C、db2advis -d proddb -i workload.sql -m P D、db2advis -d proddb -i workload.sql -m ALL
考题
Which of the following best describes Simultaneous Multi-threading （SMT）？（）A、A POWER5 microprocessor feature that allocates two processors to each applicationB、A Workload Manager feature that allows two processing threads to be executing on a single processorC、An AIX v5.2 feature that allows two processing threads to be executing on a single processor concurrentlyD、A POWER5 microprocessor feature that allows two processing threads to be executing on a single processor concurrently
考题
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.
考题
What is true about a background engine? （）(Choose two.)A、It is a server-side PL/SQL procedure.B、When executing a PL/SQL function activity, it will automatically ping (cache) the PL/SQL code.C、It executes deferred activities in decreasing order of their Cost property value (activities with higher cost value are processed first).D、It would fail if another background engine process is started to handle the same type of activities within the same item type.E、During its single invocation, it processes activities that were stuck, deferred or timed out when the background engine was started.
考题
Your database supports an online transaction processing (OLTP) application. The application is undergoing some major schema changes, such as addition of new indexes and materialized views. You want to check the impact of these changes on workload performance. What should you use to achieve this?（）A、Database replayB、SQL Tuning AdvisorC、SQL Access AdvisorD、SQL Performance AnalyzerE、Automatic Workload Repository compare reports
考题
Performance divergence indicated in the Workload Replay report is most likely due to what？（） A、 DML and SQL statement results that do not match between the capture and replay systemsB、 When errors that occur in the capture system dont occur in the replay systemC、 Top SQL statementsD、 Infrastructure or system-configuration differencesE、 Time-of-day differences between capture and replay systems
考题
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 textB、 the execution planC、 the execution contextD、 the execution frequencyE、 the system change number （SCN）
考题
Identify the two direct sources from where SQL plans can be loaded into the SQL plan baselines.（）A、Cursor cacheB、Stored outlineC、SQL Tuning SetD、Automatic Workload Repository (AWR) snapshots
考题
You perform the following activities during the database upgrade from Oracle Database 10g to Oracle Database 11g: 1. Capture plans for a SQL workload into a SQL Tuning Set (STS) before upgrade. 2. Load these plans from the STS into the SQL plan baseline immediately after the upgrade. What is the reason for performing these activities? （）A、to minimize plan regression due to the use of a new optimizer versionB、to completely avoid the use of new plans generated by a new optimizer versionC、to prevent plan capturing when the SQL statement is executed after the database upgradeD、to keep the plan in the plan history so that it can be used when the older version of the optimizer is used
考题
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 SQLB、the execution planC、the execution contextD、the execution frequencyE、the system change number (SCN)
考题
You work in a company which uses SQL Server 2008. You are the administrator of the company database. Now you are in charge of a remote SQL Server 2008 instance. You notice that the application has a poor performance. On the remote SQL Server instance， you capture a workload of the remote instance to a trace table by using SQL Profiler. Now you have to use the Database Engine Tuning Advisor to analyze the workload of the remote SQL Server instance on a local SQL Server instance. So what action should you perform to achieve this goal？（）A、You should recapture the workload by using the data collector.B、You should enable the XP_MSVER stored procedure on the local server.C、You should enable the XP_MSVER stored procedure on the remote serverD、You should recapture the workload to a trace file by using SQL Profiler.
考题
You use a SQL Server 2005 database named DB1， which is located on a server named SQL1. DB1 is in use 24 hours a day， 7 days a week. A recent copy of DB1 exists on a second server named SQLtest that also runs SQL Server 2005. You detect a high number of full scans on SQL1 and conclude that additional indexes in DB1 are needed. A workload file that is suitable for Database Engine Tuning Advisor （DTA） already exists. You need to analyze the workload file by using DTA. You must ensure maximum performance on SQL1 during analysis. You must also ensure availability during the implementation of any recommendations suggested by the DTA. What should you do？（）A、Store the workload file on SQL1. Start DTA on SQLtest and connect to SQL1. Specify all workload and tuning options as necessary. In the Advanced Tuning Options dialog box， select the Generate only online recommendations check box.B、Store the workload file on SQLtest. Start DTA on SQLtest and connect to SQLtest. Specify all workload and tuning options as necessary. In the Advanced Tuning Options dialog box,select the generate only online recommendations check box.C、Store the workload file on SQL1. Start DTA on SQL1 and connect to SQL1. Specify all workload and tuning options as necessary. In the Advanced Tuning Options dialog box，select the All recommendations are offline check box.D、Store the workload file on SQLtest. Start DTA on SQLtest and connect to SQLtest.Specify all workload and tuning options as necessary.In the Advanced Tuning Options dialog box,select the All recommendations are offline check box.
考题
Which two are attributes of /SQL*Plus? （）A、/SQL*Plus commands cannot be abbreviated.B、/SQL*Plus commands are accesses from a browser.C、/SQL*Plus commands are used to manipulate data in tables.D、/SQL*Plus commands manipulate table definitions in the database.E、/SQL*Plus is the Oracle proprietary interface for executing SQL statements.
考题
多选题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？（）Athe SQL textBthe execution planCthe execution contextDthe execution frequencyEthe system change number （SCN）
考题
单选题Which of the following best describes Simultaneous Multi-threading （SMT）？（）A
A POWER5 microprocessor feature that allocates two processors to each applicationB
A Workload Manager feature that allows two processing threads to be executing on a single processorC
An AIX v5.2 feature that allows two processing threads to be executing on a single processor concurrentlyD
A POWER5 microprocessor feature that allows two processing threads to be executing on a single processor concurrently
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
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.
考题
单选题You perform the following activities during the database upgrade from Oracle Database 10g to Oracle Database 11g: 1. Capture plans for a SQL workload into a SQL Tuning Set (STS) before upgrade. 2. Load these plans from the STS into the SQL plan baseline immediately after the upgrade. What is the reason for performing these activities? （）A
to minimize plan regression due to the use of a new optimizer versionB
to completely avoid the use of new plans generated by a new optimizer versionC
to prevent plan capturing when the SQL statement is executed after the database upgradeD
to keep the plan in the plan history so that it can be used when the older version of the optimizer is used
考题
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.
考题
单选题Performance divergence indicated in the Workload Replay report is most likely due to what？（）A
DML and SQL statement results that do not match between the capture and replay systemsB
When errors that occur in the capture system dont occur in the replay systemC
Top SQL statementsD
Infrastructure or system-configuration differencesE
Time-of-day differences between capture and replay systems
热门标签
最新试卷
