There was media failure and you need to check the data files

题目
单选题
There was media failure and you need to check the data files for any block corruption. Which option would you use to create a report on any corruptions found within the database?()
A

the DBNEWID utility

B

the DBVERIFY utility

C

the ANALYZE command

D

the RMAN REPORT command

E

the RMAN CROSSCHECK command

F

the CHECK_OBJECT procedure of the DBMS_REPAIR package

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相似问题和答案

第1题:

You are the administrator of SQL Server 2000 computer named FABSQL2K01. You create a Data Transformation Services package that contains definition for two transform. data tasks.

The tasks gets data from two text files named Customers and Sales. The DTS package is configured as shown in the exhibit.

You do not want the DTS package to add any data to the server unless both transform. data tasks complete successfully.

You select the use transactions check box of DTS package and the Join transaction of present check box of both transform. data tasks. You then select the fail package on step failure check box of both transform. data tasks.

You want to use the DTS package to import data from the text files to the server. You want to ensure that changes are committed if all imported data is successfully transformed.

What should you do?

A.Select the commit on successful completion check box of the DTS package.

B.Select the commit transaction on successful completion of this step check box of the customers transform. data task.

C.Select the commit transaction on successful completion of this step check box of the sales transform. data task.

D.Select the commit transaction on successful completion of this step check box of both transform. data tasks.


正确答案:A
解析:Explanation:ItispossibletosettheCommitonsuccessfulpackagecompletioncheckboxontheAdvancedTaboftheDTSPropertiesdialogBox.ThischeckboxspecifiesthatifeachindividualSQLstatementisatransactioncompletessuccessfully,thetransactionwillautomaticallybecommitted;andifthestatementhasanerror,thestatementisrolledback.Whenthischeckboxiscleared,theDTSconnectionsoperateinimplicittransactionmodeandthefirstSQLstatementbeginsatransactionthatremainsineffectuntilDTScommitsitorrollsitback.ThenextSQLstatementexecutedafteranycommitorrollbackstartsanewtransaction.IncorrectAnswers:B:TheCommittransactiononsuccessfulcompletionofthisstepcheckboxtreatseachstepinaDTSpackageasseparate.Thus,selectingtheCommittransactiononsuccessfulcompletionofthisstepcheckboxofthecustomerstransform.datataskwouldresultinthistaskbeingcommittedregardlessoftheprogressofthesalestransformationdatatask.C:TheCommittransactiononsuccessfulcompletionofthisstepcheckboxtreatseachstepinaDTSpackageasseparate.Thus,selectingCommittransactiononsuccessfulcompletionofthisstepcheckboxofthesalestransform.datataskwouldresultinthistaskbeingcommittedregardlessoftheprogressofthecustomer’stransformationdatatask.D:TheCommittransactiononsuccessfulcompletionofthisstepcheckboxtreatseachstepinaDTSpackageasseparate.Thus,selectthecommittransactiononsuccessfulcompletionofthisstepcheckboxofbothtransform.datataskswouldresultinthetwopartsbeingtreatedasseparateandeachpartbeingcommittedregardlessoftheprogressintheother.

第2题:

You need to back up the existing data on a computer before you install a new application. You also need to ensure that you are able to recover individual user files that are replaced or deleted during the installation.What should you do?()

A.A

B.B

C.C

D.D


参考答案:C

第3题:

Your database is running in ARCHIVELOG mode. One of the data files,USERDATA01.dbf, in the USERS tablespace is damaged and you need to recover the file until the point of failure. The backup for the datafile is available. Which three files would be used in the user-managed recovery process performed by the database administrator (DBA)?()

A. Redo logs

B. Control file

C. The latest backup of only the damaged data file

D. The latest backup of all the data file in the USERS tablespace

E. Temporary files of temporary tablespace

F. Archive Logs since the latest backup to point of failure


参考答案:A, C, F

第4题:

There was media failure and you need to check the data files for any block corruption. Which option would you use to create a report on any corruptions found within the database?() 

  • A、the DBNEWID utility
  • B、the DBVERIFY utility
  • C、the ANALYZE command
  • D、the RMAN REPORT command
  • E、the RMAN CROSSCHECK command
  • F、the CHECK_OBJECT procedure of the DBMS_REPAIR package

正确答案:B

第5题:

You are in the middle of a transaction and very crucial data has been modified. Because of a hardware failure, the instance has shut down before synchronizing all the database files. Which two statements are true?()

  • A、On startup, SMON coordinates instance recovery.
  • B、On startup, CKPT coordinates instance recovery.
  • C、On startup, use RMAN to perform instance recovery.
  • D、Uncommitted changes will be rolled back after the database is opened.
  • E、On startup, perform media recovery and then instance recovery.
  • F、On startup, all the files will be synchronized and you get both committed and uncommitted data.

正确答案:A,D

第6题:

Your data recovery strategy must meet the following requirements:·Back up all data files and folders in C:\Data.·Restore individual files and folders in C:\Data.·Ensure that data is backed up to and restored from external media.What should you do?()

A.A

B.B

C.C

D.D


参考答案:D

第7题:

Certkiller .com has a file server named Certkiller -SR07 that stores old inventory files. Certkiller .com has given you the task of creating an application to archive these old inventory files.The inventory files have to be compressed prior to being uploaded to Certkiller .com‘s Web server.You are currently writing a method that will receive a byte array and compress it into a new file.You need to ensure that a data corruption check takes place during the decompression process.What should you do?()

A.

B.

C.

D.


参考答案:D

第8题:

You want to perform the following operations for the DATA ASM disk group:Which command accomplishes these tasks?()

A. ALTER DISKGROUP data CHECK;

B. ALTER DISKGROUP data CHECK DISK;

C. ALTER DISKGROUP data CHECK FILE;

D. ALTER DISKGROUP data CHECK DISK IN FAILURE GROUP 1;


参考答案:A

第9题:

Your database is running In ARCIIIVELOG mode. One of the data files, USBRDATAOI. DBF, in the users tablespace is damaged and you need to recover the file until the point of failure. The backup for the data file is available.  Which three files would be used in the user-managed recovery process performed by the database administrator (DBA)?() 

  • A、 redo logs
  • B、 control file
  • C、 temporary files of temporary tablespace
  • D、 the latest backup of only the damaged data file
  • E、 the latest backup of all the data files In the USERS tablespace

正确答案:A,B,D

第10题:

You want to perform the following operations for the DATA ASM disk group: -Verify the consistency of the disk.  -Cross-check all the file extent maps and allocation tables for consistency. check whether the alias metadata directory and file directory are linked correctly.  -Check that ASM metadata directories do not have unreachable allocated blocks.   Which command accomplishes these tasks()?

  • A、 ALTER DISKGROUP data CHECK
  • B、 ALTER DISKGROUP data CHECK DISK
  • C、 ALTER DISKGROUP data CHECK FILE
  • D、 ALTER DISKGROUP data CHECK DISK IN FAILURE GROUP 1

正确答案:A

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