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单选题
Identify a performance impact when using the Performance Schema.（）
A
There is no impact on performance
B
The overhead depends on the settings of the Performance Schema
C
There is an overhead for querying the Performance Schema but not for having it enabled
D
There is a constant overhead regardless of settings and workload
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Which three statements about performance analysis by SQL Performance Analyzer are true? ()(Choose three.)
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考题
Identify a performance impact when using the Performance Schema.()
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考题
Consider the events_% tables in performance Schema.Which two methods will clear or reset the collected events in the tables?()
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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
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In a system with high CPU utilization， which of the following will help the MOST to minimize the performance impact of parity overhead in RAID 5？（）A、Use all SAS DrivesB、Triple Channel RAMC、Use all Solid State DrivesD、Hardware RAID Controller
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Consider the events_% tables in performance Schema. Which two methods will clear or reset the collected events in the tables?（）A、Using DELETE statements, for example, DELETE FROM performance_schema.events_watis_currentB、Using the statement RESET PERFORMANCE CACHEC、Using the statement FLUSH PERFORMANCE CACHED、Using TRUNCATE statements, for example, TRUNATE TABLE performance_schema.events_waits_currentE、Disabling and re-enabling all instrumentsF、Restarting Mysql
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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
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The application workload on your database is same between 10 a.m. and 11 a.m. on weekdays. Suddenly you observe poor performance between 10 a.m. and 11 a.m. in the middle of the week. How would you identify the changes in configuration settings， workload profile， and statistics to diagnose the possible causes of the performance degradation？（）A、by using the SQL access advisorB、by using the Automatic Workload Repository reportC、by running the Automatic Database Diagnostic Monitor （ADDM）D、by using the Automatic Workload Repository Compare Period reportE、by analyzing the output of the V$ACTIVE_SESSION_HISTORY view
考题
Identify a performance impact when using the Performance Schema.（）A、There is no impact on performanceB、The overhead depends on the settings of the Performance SchemaC、There is an overhead for querying the Performance Schema but not for having it enabledD、There is a constant overhead regardless of settings and workload
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
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
多选题Consider the events_% tables in performance Schema. Which two methods will clear or reset the collected events in the tables?（）AUsing DELETE statements, for example, DELETE FROM performance_schema.events_watis_currentBUsing the statement RESET PERFORMANCE CACHECUsing the statement FLUSH PERFORMANCE CACHEDUsing TRUNCATE statements, for example, TRUNATE TABLE performance_schema.events_waits_currentEDisabling and re-enabling all instrumentsFRestarting Mysql
考题
单选题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
单选题Identify a performance impact when using the Performance Schema.（）A
There is no impact on performanceB
The overhead depends on the settings of the Performance SchemaC
There is an overhead for querying the Performance Schema but not for having it enabledD
There is a constant overhead regardless of settings and workload
考题
单选题The application workload on your database is same between 10 a.m. and 11 a.m. on weekdays. Suddenly you observe poor performance between 10 a.m. and 11 a.m. in the middle of the week. How would you identify the changes in configuration settings， workload profile， and statistics to diagnose the possible causes of the performance degradation？（）A
by using the SQL access advisorB
by using the Automatic Workload Repository reportC
by running the Automatic Database Diagnostic Monitor （ADDM）D
by using the Automatic Workload Repository Compare Period reportE
by analyzing the output of the V$ACTIVE_SESSION_HISTORY view
考题
单选题In a system with high CPU utilization， which of the following will help the MOST to minimize the performance impact of parity overhead in RAID 5？（）A
Use all SAS DrivesB
Triple Channel RAMC
Use all Solid State DrivesD
Hardware RAID Controller
考题
单选题A customer needs a remote data copy， data migration， and off-site backup solution. The solution cannot impact application performance. The sites are over continental distances. Which characteristic of DS8700 Global Mirror makes it a good fit for this customer（）A
it provides synchronous mirroring on both sidesB
it can be implemented withoutFlashCopy volumes at the target siteC
with Global Mirror， the Metro Mirror functions can be used over continental distancesD
it has almost no impact on application performance because of its extremely short and adjustable coordination time
考题
多选题Consider the events_% tables in performance Schema. Which two methods will clear or reset the collected events in the tables?（）AUsing DELETE statements, for example, DELETE FROM performance_schema.events_watis_currentBUsing the statement RESET PERFORMANCE CACHECUsing the statement FLUSH PERFORMANCE CACHEDUsing TRUNCATE statements, for example, TRUNATE TABLE performance_schema.events_waits_currentEDisabling and re-enabling all instrumentsFRestarting Mysql
考题
单选题You have an Exchange Server 2010 Mailbox server.You need to identify which users have the largest mailboxes on the server.What should you do？（）A
Run the Get-MailBoxStatistics cmdlet.B
Run the Get-StoreUsageStatistics cmdlet.C
Add the MSExchangeIS Client performance counters to the Performance Monitor.D
Add the MSExchangeIS Mailbox performance counters to the Performance Monitor.
考题
单选题You noticed that large memory allocations for the Oracle backup and restore operations are causing a performance overhead on the shared pool. Which memory structure would you configure to avoid this performance overhead？（）A
recycle buffer cacheB
large poolC
streams poolD
keep buffer cacheE
redo log buffer
考题
单选题Which of the following sequences of steps can be used to increase the amount of virtual memory （page memory） available to Windows？（）A
Start Control Panel System Advanced tab Startup and Recovery Advanced tab Settings Advanced tabB
Start Control Panel System General tab Under Performance Settings Advanced tab C
Start Control Panel System Advanced tab Under Performance Settings Advanced tab D
Start Control Panel System Performance tab Under Performance Settings Advanced tab
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