CMS专题
单选题You work as a database administrator for Supportcenter.cn. Users complain that their query is taking a long time to complete. You suspect the database buffer cache size to be the reason， and you define an alert to be generated when the buffer cache hit
题目
The advisory memory has been turned off.
The DB_CACHE_ADVICE parameter has been set to OFF in the parameter file.
The STATISTICS_LEVEL parameter has been set to BASIC in the parameter file.
The TIMED_STATISTICS parameter has been set to FALSE in the parameter file.
The STATISTICS_LEVEL parameter has been set to TYPICAL in the parameter file.
参考答案和解析
相似问题和答案
第1题：
You work as a database administrator for Supportcenter.cn. In your Oracle database 10g installation you have set ORACLE_BASE to /u01/app/oracle. Which objective will be achieved by this setting？（）
- A、The Oracle kernel will be placed in this location.
- B、The Oracle software will be placed in this location.
- C、The server parameter file （SPFILE） will be placed in this location.
- D、The database files will be placed in this location， if not specified explicitly.
- E、The location will be considered for the base of Oracle Managed Files （OMF）.
- F、The location will be considered for the base of Optimal Flexible Architecture （OFA）.
正确答案:F
第2题：
You work as a database administrator for Supportcenter.cn. One of the database users accidentally deleted all the rows of a critical table and committed the delete at 1：30 p.m. You senior database administrator， SupportCenter， asks you to retrieve the lost data. Which two actions would you use to ensure that there is no impact on other connected users while retrieving the deleted rows？（）
- A、Use a flashback query to retrieve the rows that were deleted
- B、Useconventialincremental export and then import the affected object
- C、Shutdown the database inNORMALmode and restart the database instance
- D、Use DBMS_META package to reconstruct the object using undo segments
- E、UseTablespacePoint in Time Recovery （TSPITR） method to recover the table and the data
- F、Use Oracle DataPumptwithflashback_timeoption toentableflashback export and then import the affected object.
正确答案:B,E
第3题：
You work as a database administrator for Supportcenter.cn. You find that reports are running for a long time in your data warehousing applications. You suspect a lack of indexes is the reason for the performance degradation. Which advisory component would you refer to， in order to determine the appropriate indexes？（）
- A、Memory Advisors
- B、Segment Advisors
- C、SQL Tuning and Access Advisors
- D、Automated Workload Repository （AWR）
- E、Automatic Database Diagnostic Monitor （ADDM）
正确答案:C
第4题：
You work as a database administrator for Supportcenter.cn. You received the following error while working on your database： ORA-01555： snapshot too old ，In which situation would you receive such an error？（）
- A、You performed rollback after commit.
- B、If a log switch occurs in your database.
- C、Thearchiverfails to generate an archived log file.
- D、Instance recovery fails to find one of the redo log files.
- E、A long-running query is unable to get read-consistent image.
- F、If you perform manual undo management operations in auto mode.
正确答案:E
第5题：
You work as a database administrator for Supportcenter.cn. You want to create your database with the automatic undo management feature enable.Which two tasks must you perform to achieve this？（）
- A、Set the UNDO_RETENTION parameter to AUTO.
- B、Create an initial undo segment in undotablespace.
- C、Set the UNDO_RETENTION parameter to 900 or more
- D、Set the initialization parameter UNDO_MANAGEMENT to AUTO
- E、Set the UNDO_MANAGEMENT parameter to the name of an undotablespace
正确答案:D,E
第6题：
You work as a database administrator for Supportcenter.cn. Client connection requests are failing because the listener is not responding. You want to forward client connect requests to another listener if one listener is not responding. How do you achieve this？（）
- A、Enable instance failover
- B、Configure shared server
- C、Enable database failover
- D、Enable connect-time failover
- E、Enable Transparent Application Failover （TAF）
正确答案:D
第7题：
You work as a database administrator for Supportcenter.cn. In a production environment， users complain about the slow response time when accessing the database. You have not optimized the memory usage of the Oracle instance and you suspect the problem to be with the memory. To which type of object would you refer to determine the cause of the slow response？（）
- A、The trace file
- B、The fixed views
- C、The data dictionary views
- D、The operating system log fields
- E、The dynamic performance views.
正确答案:E
第8题：
You work as a database administrator for Supportcenter.cn. You have been asked to use a centralized administrative tool to administer your database servers and application servers. In order to achieve the objective， which component would you configure on each database server？（）
- A、Database Control
- B、Management Server
- C、Management Repository
- D、Application Server Control
- E、Oracle Management Agent
正确答案:E
第9题：
You work as a database administrator for Supportcenter.cn. Your database is in NOARCHIVELOG mode and you want to perform a backup. Which type of backup would be appropriate in this case？（）
- A、Hot backup
- B、Online backup
- C、consistent backup
- D、incremental backup
- E、inconsistent backup
正确答案:C
第10题：
You work as a database administrator for Supportcenter.cn. You decided to manage client and server connections using Local Naming method in Supportcenter.cn. When you try to connect to the database you get the following error： ERROR： ORA-12154：TNS：couldnot resolve service name Which network configuration files would you look into to resolve this error？（）
- A、snmp.ora
- B、names.ora
- C、spfile.ora
- D、sqlnet.ora
- E、listener.ora
- F、tnsnames.ora
正确答案:D,F