单选题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

第1题：

The Automatic Shared Memory Management feature is enabled for the PROD database. Currently， a lot of insert activity is taking place in the database， and the memory structures are allocated according to the database workload. As the workload reduces， you decide to perform batch jobs in the database. Which of the following initialization parameters are NOT automatically resized according to the new workload and continue to remain unchanged？（）

• A、 LOG_BUFFER
• B、 DB_CACHE_SIZE
• C、 JAVA_POOL_SIZE
• D、 LARGE_POOL_SIZE
• E、 SHARED_POOL_SIZE
• F、 STREAMS_POOL_SIZE

第2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3题：

Records from the data dictionary information are stored in which of the following database memory areas?（）

• A、Library cache 
• B、Row cache 
• C、Session UGA 
• D、Buffer cache

第4题：

Your database is in ARCHIVELOG mode. You lost an index tablespace due to a disk failure while the database was open. You have neither a backup of the lost index tablespace nor the scripts containing the CREATE INDEX statements to recreate the indexes. Currently， several users are executing long-running queries on the database. What will happen to the ongoing activity in the database？（）

• A、 The queries that are currently executing will abort and an error message will be returned to the user.
• B、 The queries that are currently executing will execute normally but future queries will not executed.
• C、 Data Manipulation Language （DML） statements cannot be performed on the tables on which the indexes are based.
• D、 The currently executing and future queries will execute normally， but will be slower

第5题：

A database exists as a read-intensive server that is operating with query_cachek_type =DEMAND. The database is refreshed periodically, but the resultset size of the queries does not fluctuate. Note the following details about this environment: A web application uses a limited set of queries. The Query Cache hit rate is high. All resultsets fit into the Query Cache. All queries are configured to use the Query Cache successfully. The response times for queries have recently started to increase. The cause for this has correctly been identified as the increase in the number of concurrent users accessing the web service. Based solely on the information provided, what is the most likely cause for this slowdown at the database level?（）

• A、The Query Cache is pruning queries due to an increased number of requests
• B、Query_cache_min_res_unit has been exceeded, leading to an increased performance overhead due to additional memory block lookups
• C、Mutex contention on the Query Cache is forcing the queries to take longer due to its singlethreaded nature
• D、The average resultset of a query is increasing due to an increase in the number of users requiring SQL statement execution

第6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.

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第13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 replay
• B、SQL Tuning Advisor
• C、SQL Access Advisor
• D、SQL Performance Analyzer
• E、Automatic Workload Repository compare reports

第14题：

You are analyzing how Oracle processes user statements. SQL and PL/SQL parse information is stored in which of the following database memory areas? （）

• A、Library cache 
• B、Row cache
• C、Dictionary cache 
• D、Large area 
• E、Buffer cache

第15题：

You create a table in your database that contains 50，000 rows approximately. The queries performed on the table are complex and performed on the table frequently. Which advisor helps you achieve the best performance of database for queries by recommending the appropriate indexes？（）  

• A、SQL Access Advisor
• B、 Memory Advisor
• C、SQL Tuning Advisor
• D、 Segment Advisor

第16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)

第17题：

You are a database administrator for your company. The company’s financial forecasting application uses a SQL Server 2005 database that enables business users to run both ad hoc and predefined queries. You suspect that some queries consume an excessive amount of server resources. You need to identify which queries consume the most resources. You want to achieve this goal as quickly as possible. What should you do？（）

• A、Use the DBCC INPUTBUFFER command.
• B、Use the sys.dm_exec_query_stats dynamic management view （DMV）.
• C、Use the sqldiag utility.
• D、Use the SHOWPLAN session option.

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