You want to check all the data blocks being written to the d

题目
单选题
You want to check all the data blocks being written to the datafiles by analyzing the data on each block every time the DBWn process writes.   Which action will you perform to check the data blocks?()
A

 Set the value of the DB_BLOCK_CHECKING initialization parameter to TRUE

B

 Use the ANALYZE utility.

C

 Use the DBVERIFY utility.

D

 Use 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 are the administrator of the homeoffice.local domain. You want to create a shared printer for the company's executives so that they do not have to wait for their documents to print when the default printer's queue contains a large number of documents.

You configure the new high-priority printer and want to set permissions for the groups shown in the exhibit. Note: The default settings have been cleared.

You select the check box to allow Print permission for the Executives group. You want only the Administrators, Print Operators, Server Operators, and Executives group to be able to print to the printer. What can you do? (Select all that apply).

A.Remove the Everyone group.

B.Select the check box to deny Print permission for the Everyone group.

C.Select the check box to deny Manage Documents permission for Everyone group.

D.Select all Deny check boxes for the Everyone group.

E.Clear all check boxes for Everyone group.


正确答案:AE
解析:Explanation: By default the Everyone group, to which all users are automatically added, has access to printer. Therefore, by removing the Everyone group, only the groups that have been explicitly been given permission to the printer would be able to use the printer. The same could be achieved by removing all permissions from the Everyone group.
Incorrect answers:
B: When a user has conflicting permissions to network resources as a result to his or her membership to one or more groups, the most restrictive permission is applied. However, a deny permission overrides all other permissions. All users are automatically added to the Everyone group therefore the deny print permission applied to the Everyone group will be inherited by all users and would override their other permissions to the printer. All users would then not be able to print.

C: When a user has conflicting permissions to network resources as a result to his or her membership to one or more groups, the most restrictive permission is applied. However, a deny permission overrides all other permissions. All users are automatically added to the Everyone group therefore the deny manage documents permission applied to the Everyone group will be inherited by all users and would override their other manage documents permissions to the printer. This will however not prevent all users from be able to use the printer.

D: When a user has conflicting permissions to network resources as a result to his or her membership to one or more groups, the most restrictive permission is applied. However, a deny permission overrides all other permissions. All users are automatically added to the Everyone group therefore the deny permissions are applied to the Everyone group will be inherited by all users and would override their other permissions to the printer. All users would then not have access to the printer.

第3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4题:

In the instance of the PROD database, the checkpoint (CKPT) process runs after every minute. A database user updates the rows of the ORDERS table. Because of the configuration, the CKPT process gets initiated before the user commits the transaction. What would happen to the modified blocks when the CKPT process is started?()

  • A、The modified blocks would be written to the data files.
  • B、The modified blocks would be written to the temp files.
  • C、The modified blocks would be written to the control file.
  • D、The modified blocks would be written to the redo log files.
  • E、The modified blocks would be written to the archived redo log files.
  • F、The modified blocks would be retained in the database buffer cache.

正确答案:A

第5题:

You want to check the EMP table in the user, Scott’s schema for block corruption. You also want to fix the corrupted blocks, if any. How will you accomplish the required task?()

  • A、by using the ANALYZE utility
  • B、by using the DBVERIFY utility
  • C、by using the DB_BLOCK_CHECKING parameter
  • D、by using the DBMS_REPAIR package

正确答案:D

第6题:

Which of the following defines memory interleaving?()

A. The distribution of data written across all the memory DIMMs and the L1 cache

B. The distribution of data written across all the memory DIMMs in one bank

C. The distribution of data written across all the memory DIMMs and the processor

D. The distribution of data written across all the memory DIMMs and the L2 cache


参考答案:B

第7题:

You are the administrator of a database that contains 64 lookup tables. These tables store static data that should not change. However, users report that some of this data is being changed. You need to prevent users from modifying the data.

You want to minimize changes to your security model and to your database applications. How should you modify the database?

A.Create a filegroup named LOOKUP. Move the lookup tables to this filegroup. Select the read only check box for the filegroup.

B.Create a database role named datamodifier. Grant SELECT permissions to the datamodifier role. Add all users to the role.

C.Deny INSERT, UPDATE, and DELETE permissions for all users. Create stored procedures that modify data in all tables except lookup tables. Require users to modify data through these stored procedures.

D.Create a view of the lookup tables. Use the view to allow users access to the lookup tables.


正确答案:A
解析:Explanation:SQLServer2000allowsfilegroupsotherthantheprimaryfilegrouptobemarkedasreadonly.Afilegroupthatismarkedread-onlycannotbemodified.Tablesthatmustnotbemodifiedcanbeplacedonafilegroupthatcanthenbemarkasread-only.Thiswillpreventsaccidentalupdates.IncorrectAnswers:B:Thissolutioneffectivelypermitsalluserstomodifyanytableinthedatabase,astheywouldallhaveSELECTpermissionstothedatabase.C:ThissolutionwilleffectivelypreventallusersfrombeingabletoperformingthesetasksonalltablesinthedatabaseastheyaredeniedpermissionstorunINSERT,UPDATE,orDELETEstatementsagainstthedatabase.Abettersolutionwouldbetoapplythedenypermissionsatthetablelevelofthelookuptables.Thiswould,however,requireunnecessaryadministrativetime.D:Viewsarevirtualtablesthatareusedtofiltertablesorrowsthattheusersshouldnothaveaccessto,however,iftheusershaveaccesstothebasetables,theycanstillrunINSERT,UPDATE,andDELETEstatementsagainstthebasetable.

第8题:

In which case would you use a FULL OUTER JOIN? ()

A. Both tables have NULL values.

B. You want all unmatched data from one table.

C. You want all matched data from both tables.

D. You want all unmatched data from both tables.

E. One of the tables has more data than the other.

F. You want all matched and unmatched data from only one table.


参考答案:D

第9题:

Which of the following defines memory interleaving?()

  • A、The distribution of data written across all the memory DIMMs and the L1 cache
  • B、The distribution of data written across all the memory DIMMs in one bank
  • C、The distribution of data written across all the memory DIMMs and the processor
  • D、The distribution of data written across all the memory DIMMs and the L2 cache

正确答案:B

第10题:

According to your backup strategy, you performed an incremental level 0 backup of yourdatabase. Which statement regarding this backup is true?()

  • A、The backup is similar to image copy.
  • B、The backup contains all used data blocks.
  • C、The backup contains only unused data blocks.
  • D、The backup contains all data blocks changed since the last incremental level 1 backup.

正确答案:B

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