单选题The loss of the control file forced you to re-create the control file. After re-creating it and opening the database， you find that some of the data files are named as MISSINGnnnnn， where nnnnn is a five-digit number starting with 0. What could be the 

题目
单选题
The loss of the control file forced you to re-create the control file. After re-creating it and opening the database， you find that some of the data files are named as MISSINGnnnnn， where nnnnn is a five-digit number starting with 0. What could be the possible reason？（）
A

 These are the data files that are corrupted.

B

 There is no SYSAUX tablespace in your database

C

 There is a read-only tablespace in your database.

D

 These are the data files that cannot be recovered.

相似考题

1. You issue this statement：ALTER DATABASE BACKUP CONTROLFILE TO TRACE；  What does the statement generate？（）A、A text copy of the control file.B、A binary copy of the control file.C、A file containing a SQL statement which will re-create the database.D、A file containing a SQL statement which will re-create the control file.

2. You have discovered that one of three control files has been lost. What steps would you follow to recover that control file？（）   a. Shut down the database.  b. Restore a control-file copy from backup media.  c. Use the create control file command to create a new control file.  d. Copy the backup control file into place.  e. Create a new copy of the control file from one of the surviving control files.  f. Recover the database using the recover database using backup control file command.  g. Start up the database. A、a， b， f， gB、c， f， gC、a， d， f， gD、a， f， gE、a， e， g

3.You are maintaining your database in Oracle10g. You are performing an incomplete recovery because the tablespace， DATA1， was dropped and purged from the Recycle Bin. After performing an incomplete recovery， you open the database with the RESETLOGS option.  What will NOT be the impact of using the RESETLOGS option？（）A、 The log sequence for the database will restart from 1.B、 The log sequence number will be written to the control file.C、 The log sequence number will be written to the datafile headers.D、 The log sequence number will be written to the initialization parameter file.

4.Which statement is true regarding the Archiver （ARCn） process，archived log files，and recovery？ （）A、A database backup, combined with archived redo log files, guarantees that all committed data can be recovered to the point of failure. B、During recovery the ARCn background process copies its redo entries identified for recovery by the control file to the data files. C、After each write to an archived log, the mandatory background process ARCn writes its log sequence number and the first and last SCN number within the log sequence to the control file. D、At database recover time, and archived redo log is uniquely identified for recovery use by its redo thread number and destination ID number retrieved from the control file.

更多“单选题The loss of the control file forced you to re-create the control file. After re-creating it and opening the database， you find that some of the data files are named as MISSINGnnnnn， where nnnnn is a five-digit number starting with 0. What could be the ”相关问题

  • 第1题：

    You executed the following command to back up the control file： ALTER DATABASE BACKUP CONTROLFILE TO TRACE； What do you find in the trace file？（）

    • A、Image of the control file
    • B、Location of the control file
    • C、Contents of the control file in text format
    • D、SQL command to re-create the database
    • E、SQL command to re-create the control file
    • F、Contents of the control file in binary format

    正确答案:E

  • 第2题：

    You work as a database administrator for Supportcenter.cn. You added atablespaceto your database. Because of the changes to the physical structure of your database， you performed a backup of the control file to trace. After this， you lost only the control files and the instance aborted due to a hardware failure. How would you proceed to recover the database？（）

    • A、Start the instance and open the database， instance recovery automatically recoverscontrol files
    • B、Create a file based on the contents of the trace file and save it to the control file locations and start the database
    • C、Re-create the database （The recovery of the control file is not possible because you have lost all the control files.）
    • D、Start the instance， in the NOMOUNTstate，re-create the control file using the CREATE CONTROLFILE command stored in the trace file.
    • E、Start the instance and MOUNT the database， then re-create the control file using the CREATE CONTROLFILE command stored in the trace file.

    正确答案:D

  • 第3题：

    One of the tablespaces is read/x7fonly in your database. The loss of all control files forced you to re/x7fcreate the control file.  Which operation do you need to perform after re/x7fcreating the control file and opening the database？（）

    • A、drop and re­create the read­only tablespaces
    • B、rename the read­only data files to their correct file names
    • C、change the tablespace status from read/write to read­only
    • D、re­create the read­only tablespace because it is automatically removed

    正确答案:B

  • 第4题：

    You executed the STARTUP MOUNT command to start your database. For which database operation do you need to start the database in the MOUNT state？（）

    • A、renaming the control files
    • B、dropping a user in your database
    • C、enabling or disabling redo log archiving
    • D、dropping a tablespace in your database
    • E、re-creating the control files， after you lost all the control files in your database

    正确答案:C

  • 第5题：

    You work as a database administrator for Certkiller .com. You added atablespaceto your database. Because of the changes to the physical structure of your database， you performed a backup of the control file to trace. After this， you lost only the control files and the instance aborted due to a hardware failure.  How would you proceed to recover the database？（）

    • A、Start the instance and open the database, instance recovery automatically recovers control files 
    • B、Create a file based on the contents of the trace file and save it to the control file locations and start the database 
    • C、Re-create the database (The recovery of the control file is not possible because you have lost all the control files.) 
    • D、Start the instance, in the NOMOUNTstate,re-create the control file using the CREATE CONTROLFILE command stored in the trace file. 
    • E、Start the instance and MOUNT the database, then re-create the control file using the CREATE CONTROLFILE command stored in the trace file.

    正确答案:D

  • 第6题：

    单选题
    One of the tablespaces is read/x7fonly in your database. The loss of all control files forced you to re/x7fcreate the control file.  Which operation do you need to perform after re/x7fcreating the control file and opening the database？（）
    A

    drop and re­create the read­only tablespaces

    B

    rename the read­only data files to their correct file names

    C

    change the tablespace status from read/write to read­only

    D

    re­create the read­only tablespace because it is automatically removed


    正确答案： D
    解析： 暂无解析

  • 第7题：

    单选题
    You work as a database administrator for Supportcenter.cn. You started the instance using theinit.orafile. You have two control files and three redo log groups in your database. You decided to protect the database against failures by adding one more control file. Which file is the appropriate way to perform this task？（）
    A

    Shut down the instance， copy the control file to the third location and open the database.

    B

    Abort the instance， copy the control file to the third location， modify the CONTROL_FILES parameter in theinit.orafile and open the database.

    C

    Copy the control file to the third location， modify the CONTROL_FILES parameter in theinit.orafile， restart the instance and open the database.

    D

    Shut down the instance， copy the control file to the third location， modify the CONTROL_FILES parameter in theinit.orafile and open the database.

    E

    Shut down the instance， startup in the mount state， copy the control file to the third location， modify the CONTROL_FILES parameter ininit.oraand open the database.


    正确答案： D
    解析： 暂无解析

  • 第8题：

    单选题
    You executed the following command to back up the control file： ALTER DATABASE BACKUP CONTROLFILE TO TRACE； What do you find in the trace file？（）
    A

    Image of the control file

    B

    Location of the control file

    C

    Contents of the control file in text format

    D

    SQL command to re-create the database

    E

    SQL command to re-create the control file

    F

    Contents of the control file in binary format


    正确答案： C
    解析： 暂无解析

  • 第9题：

    单选题
    You are operating your database in NOARCHIVELOG mode. Your most recent backup includes a copy of all of the data files and the control files taken when the current log sequence number was 45. You experience disk failure on the drive on which your SYSTEM tablespace data files are stored. At the time of the failure， the current log sequence number is 98. Which files should you restore to recover from the loss of the SYSTEM tablespace data files？（）
    A

    Only the data files.

    B

    All of the data files and the control files.

    C

    Only the data files belonging to the SYSTEM tablespace.

    D

    Only the data files belonging to the SYSTEM tablespace and the control files.


    正确答案： A
    解析： 暂无解析

  • 第10题：

    单选题
    One of the tablespaces is read-only in your database. The loss of all control files forced you to re-create the control file. Which operation do you need to perform after re-creating the control file and opening the database？（）
    A

     drop and re-create the read-only tablespaces

    B

     rename the read-only data files to their correct file names

    C

     change the tablespace status from read/write to read-only

    D

     re-create the read-only tablespace because it is automatically removed


    正确答案： C
    解析： 暂无解析

  • 第11题：

    单选题
    The loss of the control file forced you to re/x7fcreate the control file. After re/x7fcreating it and opening the database， you find that some of the data files are named as MISSINGnnnnn， where nnnnn is a five/x7fdigit number starting with 0.  What could be the possible reason？（）
    A

    These are the data files that are corrupted.

    B

    There is no SYSAUX tablespace in your database

    C

    There is a read­only tablespace in your database.

    D

    These are the data files that cannot be recovered.


    正确答案： A
    解析： 暂无解析

  • 第12题：

    单选题
    You have discovered that one of three control files has been lost. What steps would you follow to recover that control file？（）   a. Shut down the database.  b. Restore a control-file copy from backup media.  c. Use the create control file command to create a new control file.  d. Copy the backup control file into place.  e. Create a new copy of the control file from one of the surviving control files.  f. Recover the database using the recover database using backup control file command.  g. Start up the database.
    A

    a， b， f， g

    B

    c， f， g

    C

    a， d， f， g

    D

    a， f， g

    E

    a， e， g


    正确答案： B
    解析： 暂无解析

  • 第13题：

    You have a read-only tablespace on read-only media. You want to perform a media recovery on the existing data files， but using a backup control file. The backup control file indicates that the status of the read-only tablespace was read/write when the control file was backed up. What should you consider？（）

    • A、 take data files from the read-only tablespace offline before performing a recovery
    • B、 recovery using backup control file is not possible， so restore all the files from the last full database backup， and then open the database
    • C、 drop the read-only tablespace and re-create the tablespace after recovery
    • D、 perform a recovery； status of the tablespace in control file will be changed automatically

    正确答案:A

  • 第14题：

    The loss of the control file forced you to re/x7fcreate the control file. After re/x7fcreating it and opening the database， you find that some of the data files are named as MISSINGnnnnn， where nnnnn is a five/x7fdigit number starting with 0.  What could be the possible reason？（）

    • A、These are the data files that are corrupted.
    • B、There is no SYSAUX tablespace in your database
    • C、There is a read­only tablespace in your database.
    • D、These are the data files that cannot be recovered.

    正确答案:C

  • 第15题：

    You have a read/x7fonly tablespace on read/x7fonly media. You want to perform a media recovery on the existing data files， but using a backup control file. The backup control file indicates that the status of the read/x7fonly tablespace was read/write when the control file was backed up. What should you consider？（）

    • A、drop the read­only tablespace and re­create the tablespace after recovery
    • B、take data files from the read­only tablespace offline before performing a recovery
    • C、perform a recovery; status of the tablespace in control file will be changed automatically
    • D、recovery using backup control file is not possible， so restore all the files from the last full database backup， and then open the database

    正确答案:B

  • 第16题：

    You lost a data file that belongs to an index tablespace in your database， which operates in ARCHIVELOG mode. Loss of the data file resulted in increased response time on your queries. Which two options would you use to solve this problem？ （）

    • A、 Restore the lost data file from the backup， and then flash back the database.
    • B、 Restore the data file pertaining to index tablespace， and then recover the tablespace.
    • C、 Restore all the data files， and then perform an incomplete recovery to get the tablespace back.
    • D、 Restore all the data files， and then perform an incomplete recovery using the backup control file.
    • E、 Drop and re-create the index tablespace， and then re-create all of the indexes in that tablespace.

    正确答案:B,E

  • 第17题：

    The loss of the control file forced you to re-create the control file. After re-creating it and opening the database， you find that some of the data files are named as MISSINGnnnnn， where nnnnn is a five-digit number starting with 0. What could be the possible reason？（）

    • A、 These are the data files that are corrupted.
    • B、 There is no SYSAUX tablespace in your database
    • C、 There is a read-only tablespace in your database.
    • D、 These are the data files that cannot be recovered.

    正确答案:C

  • 第18题：

    单选题
    You have a read/x7fonly tablespace on read/x7fonly media. You want to perform a media recovery on the existing data files， but using a backup control file. The backup control file indicates that the status of the read/x7fonly tablespace was read/write when the control file was backed up. What should you consider？（）
    A

    drop the read­only tablespace and re­create the tablespace after recovery

    B

    take data files from the read­only tablespace offline before performing a recovery

    C

    perform a recovery; status of the tablespace in control file will be changed automatically

    D

    recovery using backup control file is not possible， so restore all the files from the last full database backup， and then open the database


    正确答案： B
    解析： 暂无解析

  • 第19题：

    单选题
    You are maintaining your database in Oracle10g. You are performing an incomplete recovery because the tablespace， DATA1， was dropped and purged from the Recycle Bin. After performing an incomplete recovery， you open the database with the RESETLOGS option.  What will NOT be the impact of using the RESETLOGS option？（）
    A

     The log sequence for the database will restart from 1.

    B

     The log sequence number will be written to the control file.

    C

     The log sequence number will be written to the datafile headers.

    D

     The log sequence number will be written to the initialization parameter file.


    正确答案： D
    解析： 暂无解析

  • 第20题：

    单选题
    You issue this statement：ALTER DATABASE BACKUP CONTROLFILE TO TRACE；  What does the statement generate？（）
    A

    A text copy of the control file.

    B

    A binary copy of the control file.

    C

    A file containing a SQL statement which will re-create the database.

    D

    A file containing a SQL statement which will re-create the control file.


    正确答案： A
    解析： 暂无解析

  • 第21题：

    单选题
    You have a read-only tablespace on read-only media. You want to perform a media recovery on the existing data files， but using a backup control file. The backup control file indicates that the status of the read-only tablespace was read/write when the control file was backed up. What should you consider？（）
    A

     take data files from the read-only tablespace offline before performing a recovery

    B

     recovery using backup control file is not possible， so restore all the files from the last full database backup， and then open the database

    C

     drop the read-only tablespace and re-create the tablespace after recovery

    D

     perform a recovery； status of the tablespace in control file will be changed automatically


    正确答案： B
    解析： 暂无解析

  • 第22题：

    单选题
    You work as a database administrator for Supportcenter.cn. You added atablespaceto your database. Because of the changes to the physical structure of your database， you performed a backup of the control file to trace. After this， you lost only the control files and the instance aborted due to a hardware failure. How would you proceed to recover the database？（）
    A

    Start the instance and open the database， instance recovery automatically recoverscontrol files

    B

    Create a file based on the contents of the trace file and save it to the control file locations and start the database

    C

    Re-create the database （The recovery of the control file is not possible because you have lost all the control files.）

    D

    Start the instance， in the NOMOUNTstate，re-create the control file using the CREATE CONTROLFILE command stored in the trace file.

    E

    Start the instance and MOUNT the database， then re-create the control file using the CREATE CONTROLFILE command stored in the trace file.


    正确答案： C
    解析： 暂无解析

  • 第23题：

    单选题
    You work as a database administrator for Certkiller .com. You added atablespaceto your database. Because of the changes to the physical structure of your database， you performed a backup of the control file to trace. After this， you lost only the control files and the instance aborted due to a hardware failure.  How would you proceed to recover the database？（）
    A

    Start the instance and open the database, instance recovery automatically recovers control files 

    B

    Create a file based on the contents of the trace file and save it to the control file locations and start the database 

    C

    Re-create the database (The recovery of the control file is not possible because you have lost all the control files.) 

    D

    Start the instance, in the NOMOUNTstate,re-create the control file using the CREATE CONTROLFILE command stored in the trace file. 

    E

    Start the instance and MOUNT the database, then re-create the control file using the CREATE CONTROLFILE command stored in the trace file.


    正确答案： D
    解析： 暂无解析

  • 第24题：

    单选题
    The loss of the control file forced you to re-create the control file. After re-creating it and opening the database， you find that some of the data files are named as MISSINGnnnnn， where nnnnn is a five-digit number starting with 0. What could be the possible reason？（）
    A

     These are the data files that are corrupted.

    B

     There is no SYSAUX tablespace in your database

    C

     There is a read-only tablespace in your database.

    D

     These are the data files that cannot be recovered.


    正确答案： A
    解析： 暂无解析

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