In your production database, users report that they are unab

题目
单选题
In your production database, users report that they are unable to generate reports on an important table because it does not contain any data. While investigating the reason, you realize that another user executed the TRUNCATE TABLE command, which accidentally caused the data to be lost. Now you want to recover the lost data of the table without affecting objects in other schemas. Which method must you use to recover the lost data?()
A

Complete Recovery with online redo log

B

Complete Recovery with archived redo log

C

Tablespace Point-in-Time Recovery (TSPITR)

D

Incomplete Recovery with system change number (SCN)

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相似问题和答案

第1题:

In your multitenant container database (CDB) containing pluggable databases (PDB), users complain about performance degradation.How does real-time Automatic database Diagnostic Monitor (ADDM) check performance degradation and provide solutions?()

A. It collects data from SGA and compares it with a preserved snapshot.

B. It collects data from SGA, analyzes it, and provides a report.

C. It collects data from SGA and compares it with the latest snapshot.

D. It collects data from both SGA and PGA, analyzes it, and provides a report


参考答案:B

第2题:

Which report will provide information on the most recently completed  plan?()

  • A、 Report 08 - Job Histogram
  • B、 Report 07 - Job History Listing
  • C、 Report 10B - Actual Production Detail
  • D、 Report 11 - Planned Production Schedule

正确答案:C

第3题:

You realize that the control file is damaged in your production database.After restoring the control file from autobackup, what is the next step that you must do to proceed with the database recovery?()

A. Mount the database

B. Open the database in NORMAL mode

C. Open the database in RESTRICTED mode

D. Open the database with the RESETLOGS option


参考答案:A

第4题:

There is a problem with one of the disks used for your database and your system administrator informs you that the disk needs to be replaced. The replacement disk will not be available until tomorrow.  There was only one data file on this disk; it belongs to the USERS tablespace in your PROD database. Your PROD database runs in ARCHIVELOG mode and nightly online backups are taken. The users need to be able to access the data in the USERS tablespace before the replacement disk arrives. You have already taken the USERS tablespace offline and have restored the data file from last night’s backup to a new disk. Which additional steps are required in order to make the USERS tablespace available?()

  • A、Only bring the tablespace back online.
  • B、Only recover the tablespace and then bring the tablespace back online.
  • C、Shut down the database, recover the data file and then start up the database.
  • D、Issue the ALTER DATABASE RENAME FILE command, recover the tablespace, and then bring the tablespace online.
  • E、Recover the tablespace, issue the ALTER DATABASE RENAME FILE command, and then bring the tablespace online.

正确答案:D

第5题:

You have been recently hired as a database administrator. Your senior manager asks you to study the production database server and submit a report on the settings done by the previous DBA.  While observing the server settings, you find that the following parameter has been set in the parameter file of the database:  REMOTE_OS_AUTHENT = TRUE  What could have been the reason to set this parameter as TRUE?()

  • A、to enable operating system authentication for a remote client
  • B、to restrict the scope of administration to identical operating systems
  • C、to allow the start up and shut down of the database from a remote client
  • D、to enable the administration of the operating system from a remote client
  • E、to disable the administration of the operating system from a remote client

正确答案:A

第6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7题:

You realize that the control file is damaged in your production database.After restoring the control file from autobackup, what is the next step that you must do to proceed with the database recovery?()

  • A、Mount the database
  • B、Open the database in NORMAL mode
  • C、Open the database in RESTRICTED mode
  • D、Open the database with the RESETLOGS option

正确答案:A

第8题:

You are using a recovery catalog to maintain Recovery Manager (RMAN) backup information for yourproduction database. You have registered your production database and are performing regular backups.Because of a new requirement you have added a few new tablespaces to your production database and youwant them to be included in backups.Identify two options for completing this task. ()(Choose two.)

A. Reregistering the target database in recovery catalog

B. Transporting the new tablespaces to the recovery catalog database

C. Syncronizing the recovery catalog with the target database control file

D. Performing a fresh backup of the target database to include the new data files in the catalog database


参考答案:C, D

第9题:

Your production database uses an Automatic Storage Management (ASM) instance to manage its files.  You want to add a new disk group to the ASM instance to manage the increased data load.  What action would you perform to include the new disk group in the ASM instance without causing any impact on the currently connected users?()

  • A、mount the new disk group in the ASM instance
  • B、restart the ASM instance and the production database instance
  • C、register the new disk groups in the production database instance
  • D、restart the ASM instance without restarting the production database instance
  • E、include the new disk group in the ASM_DISKSTRING parameter in the parameter file and restart the ASM instance

正确答案:A

第10题:

You work as a database administrator at Certkiller .com. In your production database there is a job, CALC_STAT, which has been scheduled to run every Friday at 5.00 p.m. CALC_STATupdates the optimizer statistics for the objects owned by the APPSschema. You want the task to be generic, thereby allowing users to modify the attributes of the task at run time without affecting the original task.Which component of Oracle Scheduler must you define to achieve this?()

  • A、 Window
  • B、 Program
  • C、 Job class
  • D、 Window group

正确答案:B

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