多选题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 

第1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.

第2题：

You work as a database administrator for Supportcenter.cn. Your database is opened inNOARCHIVEKLOG mode. You decide to place the database in ARCHIVELOG mode. How would you do this？（）

• A、Execute the ALTER DATABASE ARCHIVELOG statement
• B、Select ARCHIVELOG option in the database control and restart the database to apply the changes.
• C、Shut down and start the instance， and in the NOMOUNT state execute the ALTER DATABASE ARCHIVELOG statement.
• D、Shut down and start the instance， mount the database， then execute the ALTER DATABASE ARCHIVELOG statement.

第3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

第4题：

You work as a database administrator for Supportcenter.cn. Users in the Supportcenter.cn PROD database complain about the slow response of transactions. While investigating the reason you find that the transactions are waiting for the undo segments to be available， and undo retention has been set to zero.  What would you do to overcome this problem？（）

• A、Increase the undo return
• B、Create more undo segments
• C、Create another undotablespace
• D、Increase the size of the undo tablespace

第5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

第6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.

第7题：

You work as a database administrator for Certkiller .com. While loading data into the Certkiller STAFF table using Oracle Enterprise Manager 10g Database Control， you find the status of the job as failed. On further investigation， you find the following error message in the output log： ORA-01653 unable to extend table HR. Certkiller STAFF by 8 intablespaceUSERS Which task would you perform to load the data successfully without affecting the users who are accessing the table？（）

• A、Restart the database instance and run the job
• B、Truncate the Certkiller STAFF table and run the job
• C、Delete all rows from the Certkiller STAFF table and run the job
• D、Increase the size of the USERStablespacethe and run the job
• E、Increase the size of the database default permanenttablespaceand run the job

第8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）

第9题：

You work as a database administrator for Supportcenter.cn. You suspect that in one of your applications the customer table is being accessed by some unauthorized users. Which option would you use to monitor the queries being executed on the customer table？（）

• A、Monitor thealert.logfile
• B、Enable server-side SQL tracing for user sessions
• C、Enable fine-grained auditing for the customer table
• D、Enable Fine-Grained Access Control （FGAC） for the customer table
• E、Write a database trigger on the customer table on the SELECT event

第10题：

You work as a database administrator for Supportcenter.cn. You are using Recovery Manager （RMAN） for backup and recovery of your database. You executed the delete command in RMAN to delete a backup of a tablespace. Which statement is true in this scenario？（）

• A、The backup status will be marked expired in RMAN recovery catalog.
• B、The backup status will be marked deleted in RMAN recovery catalog after you execute the crosscheck command.
• C、The backup will be deleted physically from the OS （Operating system）and the backup information is removed from the recovery catalogl
• D、The backup status will be marked deleted and you must delete the backup file manually from the OS （Operating system）.
• E、The backup status will be marked deleted and you must delete the backup file manually from the OS （Operating system）， if you are not using Oracle Managed Files （OMF）.