赞题库-背景图
单项选择题

You are a professional level SQL Server 2005 database administrator in an international corporation named Wiikigo. You are experienced in implementing high-availability solutions， monitoring the database server， and design deployment. In the company， you major job is the deployment， maintenance and support of Microsoft SQL Server 2005. You work as a database administrator for your company. The users report the slow performance of a SQL Server 2005 application. You are required to identify the queries which perform slowly because of blocking.
Which action should you perform？（）

A.In a SQL Trace log file， you should look for queries with low duration values and high read and write values.
B.In a query execution plan， you should look for queries with missing or out-of-date statistics.
C.In a SQL Trace log file， you should look for queries with high duration values and low read and write values.
D.In a query execution plan， you should look for queries with a large number of table scans.

<上一题 目录 下一题>
热门试题

单项选择题You are a professional level SQL Server 2005 database administrator in an international corporation named Wiikigo. You are experienced in implementing high-availability solutions， monitoring the database server， and design deployment. In the company， you major job is the deployment， maintenance and support of Microsoft SQL Server 2005. You work as a database administrator for your company. You utilize the SP：Recompile event class to run SQL Server Profiler. You find that a great amount of recompiles occurring. The possible causes of the large number of recompiles should be identified.  From the flowing four options， which one is the most possible cause of the problem？（）

A.The sp_executesql batches are not being recovered from the procedure cache.
B.A database administrator executed UPDATE STATISTICS statements on all tables， and the most common stored procedures reference all the tables.
C.One new stored procedure is created by a database administrator.
D.Ad hoc batches are not being recovered from the procedure cache.

单项选择题You are a professional level SQL Server 2005 database administrator in an international corporation named Wiikigo. You are experienced in implementing high-availability solutions， monitoring the database server， and design deployment. In the company， you major job is the deployment， maintenance and support of Microsoft SQL Server 2005.You work as a database administrator for your company. You find a problem that when the following query is executed， a SQL Server 2005 application will perform slowly. SELECT * FROM Orders WHERE OrderStatus = ’InProgress’ This query is executed by the application as an ad hoc query. In most occasions， this query performs much more quickly. The company has the OrderStatus column indexed. The value InProgress is included by only a small number of the rows. Nevertheless， the OrderStatus column index which is the most ideal for this query is not being utilized. The performance of this query should be enhanced. However， the application that executes the query should not be changed. In addition， the effect on end users should be cut to the least.  Which action should be performed to finish the task？（）

A.To finish the task， the index should be built by utilizing a FILLFACTOR of 10 percent.
B.To finish the task， the index should be recreated to have all of the columns in the table included.
C.To finish the task， an indexed view of the Orders table should be viewed.
D.To finish the task， the statistics should be updated on the index.