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You started a long transaction. Before committing， you executed a query on one of the tables currently being modified. You received the following error： ORA-01555： snapshot too old How would you prevent such an error in the future？（）

A、guarantee undo retention

B、add one more redo log group

C、size the redo log files appropriately

D、size the UNDO tablespace appropriately

E、size the SYSTEM tablespace appropriately

F、configure an appropriate undo retention interval

H、change automatic undo management to manual

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更多“You started a long transaction. Before committing， you executed a query on one of the tables currently being modified. You received the following error： ORA-01555： snapshot too old How would you prevent such an error in the future？（）”相关的问题
第1题
[] You have two databases， FINDB and PAYDB， on single operating system and using Optimal Flexible architecture （OFA）. FINDB is functional and is currently being accessed by the users. While starting up the instance for the PAYDB database you get the following error： ORA-01081： cannot start - already running ORACLE - shut it down first Which environmental variable would you set before starting up the PAYDB database to overcome this error？（）

A、A.ORA_PATH  B、B.ORACLE_SID  C、C.ORACLE_BASE  D、D.ORACLE_HOME  E、E.LD_LIBRARY_PATH  

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第2题
[单选题] You have configured the system to purge mailboxes after 8 days of being deleted. You need to receive a notification when the mailboxes are purged. What should you do？（）

A、Start a data collector  B、Start an event viewer subscription  C、Add a task to the application event log  D、Modify the properties of the mailbox database  

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第3题
[单选题] Your computer has Windows 2000 Professional installed. Your office has a power outrage while you were running the disk defragmenter utility on your computer. When you start the computer again， you receive the following message： "Bad or missing OS". What should you do？（）

A、Start the computer in safe mode and reformat the hard disk.  B、Start the computer in the debug mode and reformat the hard disk.  C、Start the computer using the ERD and repair the Master Boot Record.  D、Start the computer by using the Windows 2000 Professional CD-Rom. Then use recovery console to repair the Master Boot Record.  

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第4题
[单选题] You have two databases， FINDB and PAYDB， on single operating system and using Optimal Flexible architecture （OFA）. FINDB is functional and is currently being accessed by the users. While starting up the instance for the PAYDB database you get the following error：  ORA-01081： cannot start - already running ORACLE - shut it down first  Which environmental variable would you set before starting up the PAYDB database to overcome this error？（）

A、ORA_PATH  B、ORACLE_SID  C、ORACLE_BASE  D、ORACLE_HOME  E、LD_LIBRARY_PATH  

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第5题
[] You are maintaining the PROD database for NetFx Corporation. You have configured controlfile autobackup in your database. At 6：00 P.M. on Monday， you issue the following command：       RMAN>BACKUP DATABASE；  At 8：00 A.M. on Tuesday， you are unable to start the database because all the control files are missing. You decide to restore the control files from the backup by using the RMAN> RESTORE CONTROLFILE FROM AUTOBACKUP； command. Which operation should you perform before using the RMAN> RESTORE&#8

A、A. Start the database in the MOUNT stage.  B、B. Back up the control file to trace.  C、C. Set the DBID  D、D. Issue the RECOVER DATABASE command.  

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第6题
[单选题] Certkiller .com has organizational units in the Active Directory domain. There are 10 servers in the organizational unit called Security. As an administrator at Certkiller .com， you generate a Group Policy Object （GPO） and link it to the Security organizational unit. What should you do to monitor the network connections to the servers in Security organizational unit（）

A、Start the Audit Object Access option  B、Start the Audit System Events option  C、Start the Audit Logon Events option  D、Start the Audit process tracking option  E、All of the above  

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第7题
[单选题] You work as a database administrator for Supportcenter.cn. In your production database， the size of Database Buffer Cache needs to be increased immediately for the current as well as future instances of the database. The Oracle instance has been configured to accommodate any changes in the size of the memory structures. At this is production database， you want to accomplish this task with no impact on the user’s connections. Which activity must you have completed before accomplishing this task？（）

A、You must have started the database instance in restricted mode.  B、You must have started the database instance inNORMALmode.  C、You must have started the database instance with server parameter file.  D、You must have started the database instance but must not have mounted.  E、You must have started the database instance but must not have opened.  

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第8题
[] Your company has a network that has 100 servers. You install a new server that runs Windows Server 2008. The server has the Web Server （IIS） server role installed.After a week， you discover that the Reliability Monitor has no data， and that the Systems Stability chart has never been updated.You need to configure the server to collect the Reliability Monitor data. What should you do？（）

A、A.Run the perfmon.exe /sys command on the server.  B、B.Configure the Task Scheduler service to start automatically.  C、C.Configure the Remote Registry service to start automatically.  D、D.Configure the Secondary Logon service to start automatically.  

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第9题
[] You have updated the modem driver on your Windows 2000 Professional computer. You restart your computer. Immediately after you log on, you receive a stop error. You need to start Windows 2000. What must you do? （）

A、A.Restart the computer in Safe Mode. Uninstall the modem driver.  B、B.Restart the computer by using the last known good configuration.  C、C.Restart the computer in Recovery Console. Replace the new Modem.inf file with the old modem.inf file.  D、D.Start the computer from the Windows 2000 startup floppy disks. Repair the registry.  E、E.Start the computer from the Windows 2000 startup floppy disks. Repair the system files.  

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第10题
[单选题] You use Windows 2000 Professional on your desktop Computer. You schedule a task to run an MMC snap-in to perform configuration tasks on other computers. You notice that the task is not completing correctly. You manually start MMC. You add the snap-in. You are then able to successfully run the task. You verify that all of your other tasks are working correctly. You want to enable your tasks to complete successfully. What should you do？（）

A、Use Scheduled Tasks to configure the task to run under the security context of your account.  B、Configure the Task Scheduler service account to use a local Administrator account and password.  C、Use Computer Management to start the Messenger service and to configure the Messenger service to start automatically.   D、Use Computer Management to start the Task Scheduler service and to configure the Task Scheduler service to start automatically.   

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