单选题Your Certkiller .com database is in ARCHIVELOG mode. The data file that belongs to the SYSTEMtablespacehas become corrupted. Up to what point can you recover the database？（）A Until last commitB Until the time you perform recoveryC Until the time the da

题目
单选题
Your Certkiller .com database is in ARCHIVELOG mode. The data file that belongs to the SYSTEMtablespacehas become corrupted. Up to what point can you recover the database？（）
A

Until last commit

B

Until the time you perform recovery

C

Until the time the date file got corrupted

D

Until the point where the last transaction begun

E

You cannot recover the SYSTEMtablespaceand must re-create the database.

相似考题

1.You want to make sure that your database backup does not exceed 10 hours in length. What command would you issue that would meet this condition?（）A、backup database plus archivelogB、backup database plus archivlog until time ‘10:00‘C、backup database plus archivelog timeout ‘10:00‘D、backup database plus archivelog duration 10:00

2.You have only two redo log groups and these groups get overwritten several times in a day. Your database operates in NOARCHIVELOG mode and user-managed consistent backups are performed every Sunday night. On Thursday morning， you find that an important table has been dropped and purged. With reference to this scenario， up to what point in time can the data be recovered？（）A、 until Thursday morningB、 until that point in time when the database is openedC、 until that point in time when the recovery is performedD、 until last Sunday’s backupE、 until that point in time when the table is dropped and purgedF、 until Wednesday evening

3.Your database is in the NOARCHIVELOG mode. Since last night’s offline backup， the logs in group 1 have been written to twice. This morning， the SYSTEM data file has become corrupted. Up to what point can it be recovered？（）A、until the last commitB、cannot be recoveredC、until the last offline backupD、until the beginning of the last transaction

4.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 logsB、Control fileC、The latest backup of only the damaged data fileD、The latest backup of all the data file in the USERS tablespaceE、Temporary files of temporary tablespaceF、Archive Logs since the latest backup to point of failure

更多“单选题Your Certkiller .com database is in ARCHIVELOG mode. The data file that belongs to the SYSTEMtablespacehas become corrupted. Up to what point can you recover the database？（）A Until last commitB Until the time you perform recoveryC Until the time the da”相关问题

  • 第1题：

    Your Certkiller .com database is in ARCHIVELOG mode. The data file that belongs to the SYSTEMtablespacehas become corrupted. Up to what point can you recover the database？（）

    • A、Until last commit
    • B、Until the time you perform recovery
    • C、Until the time the date file got corrupted
    • D、Until the point where the last transaction begun
    • E、You cannot recover the SYSTEMtablespaceand must re-create the database.

    正确答案:A

  • 第2题：

    Your Supportcenter.cn database is in ARCHIVELOG mode. The data file that belongs to the SYSTEM tablespace has become corrupted. Up to what point can you recover the database？（）

    • A、Until last commit
    • B、Until the time you perform recovery
    • C、Until the time the date file got corrupted
    • D、Until the point where the last transaction begun
    • E、You cannot recover the SYSTEMtablespaceand must re-create the database.

    正确答案:A

  • 第3题：

    The database is running in NOARCHIVELOG mode. A data file is lost. Which two are valid options for recover？（）

    • A、Restore the data file and perform incomplete recovery.
    • B、Restore the data file and perform point-in-time recover.
    • C、Drop the tablespace and lose all data in the tablespace.
    • D、Restore the database and lose all data since the last backup.

    正确答案:C,D

  • 第4题：

    Using the command shown here， what time format must you specify to recover the database until a point-in-time？（）  SQL> RECOVER DATABASE UNTIL TIME ’’；

    • A、YYYY-DD-MM:HH24:SS:MI 
    • B、YYYY-DD-MM:HH24:SS:MM 
    • C、YYYY-MM-DD:HH24:MI:SS 
    • D、YYYY-DD-MM:SS:MI:HH24

    正确答案:C

  • 第5题：

    The database Is configured in ARCHIVELOG mode. The database needs to be up 24 X 7. You want to perform user managed backup for the data files of the HR_DATA tablespace.To accomplish the task, you issued the following command: SQL> ALTER TABLESPACE hi_data BEGIN BACKUP; Which two statements are true in this scenario? （）

    • A、No transaction on the tablespace is allowed but you can perform queries.
    • B、The tablespace will automatically come out of backup mode when the file copy is complete.
    • C、The checkpoint change number is frozen in headers of the data files until the file is removed from backup mode.
    • D、The database writes the before image of an entire block to the redo stream before modifying. block tor the first time.

    正确答案:A,C

  • 第6题：

    Data file DF1 belongs to tablespace TS1.，and the database is in ARCHIVELOG mode. You did an incomplete recover in the following steps：   1. Take data file DF1 offline.  2. Copy a backup copy of DF1 into the current DF1 location.  3. Execute RECOVER DATAFILE UNTIL TIME sometime in the past.  4. Bring DF1 online.  5. Execute ALTER DATABASE OPEN RESETLOGS.   To guarantee that the database is recoverable in the future， what is the least amount of work needed？（）

    • A、Back up the data file.
    • B、Bring tablespace TS1 online.
    • C、Copy redo logs to the backup directory.
    • D、Make a complete backup right after opening the database.

    正确答案:D

  • 第7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8题：

    单选题
    Your database is in the NOARCHIVELOG mode. Since last night’s offline backup， the logs in group 1 have been written to twice. This morning， the SYSTEM data file has become corrupted. Up to what point can it be recovered？（）
    A

    until the last commit

    B

    cannot be recovered

    C

    until the last offline backup

    D

    until the beginning of the last transaction


    正确答案： C
    解析： 暂无解析

  • 第9题：

    单选题
    You want to make sure that your database backup does not exceed 10 hours in length. What command would you issue that would meet this condition?（）
    A

    backup database plus archivelog

    B

    backup database plus archivlog until time ‘10:00‘

    C

    backup database plus archivelog timeout ‘10:00‘

    D

    backup database plus archivelog duration 10:00


    正确答案： D
    解析： 暂无解析

  • 第10题：

    单选题
    Using the command shown here， what time format must you specify to recover the database until a point-in-time？（）  SQL> RECOVER DATABASE UNTIL TIME ’’；
    A

    YYYY-DD-MM:HH24:SS:MI 

    B

    YYYY-DD-MM:HH24:SS:MM 

    C

    YYYY-MM-DD:HH24:MI:SS 

    D

    YYYY-DD-MM:SS:MI:HH24


    正确答案： C
    解析： 暂无解析

  • 第11题：

    单选题
    You need to restore your database back to 9/30/2008 at 18：00. In what order would you run the following commands to compete this task？（）   a. restore controlfile until time `09/30/2008：18：00：00’ b. restore database until time `09/30/2008：18：00：00’  c. restore spfile until time `09/30/2008：18：00：00’ d. recover database until time `09/30/2008：18：00：00’ e. alter database open resetlogs f. alter database open
    A

     b， d， e

    B

     b， d， f

    C

     c， a， b， d， e

    D

     c， a， b， d， f

    E

     a， b， d， e


    正确答案： D
    解析： 暂无解析

  • 第12题：

    单选题
    You have only two redo log groups and these groups get overwritten several times in a day. Your database operates in NOARCHIVELOG mode and user-managed consistent backups are performed every Sunday night. On Thursday morning， you find that an important table has been dropped and purged. With reference to this scenario， up to what point in time can the data be recovered？（）
    A

     until Thursday morning

    B

     until that point in time when the database is opened

    C

     until that point in time when the recovery is performed

    D

     until last Sunday’s backup

    E

     until that point in time when the table is dropped and purged

    F

     until Wednesday evening


    正确答案： F
    解析： 暂无解析

  • 第13题：

    In your database， you discovered that a tempfile in a locally managed temporary tablespace has been deleted at the operating system level. How would you recover the tablespace？（）

    • A、flash back the database
    • B、perform point-in-time recovery
    • C、perform a full database recovery
    • D、drop and re-create the tablespace
    • E、use Recovery Manager （RMAN） to recover the database

    正确答案:D

  • 第14题：

    You work as a database administrator for Certkiller .com. Your database is configured for automatic undo management. UNDO_RETENTION is set to 3 hours. You want to flash back a table that was created last year. How far back can the flashback query go？ （）

    • A、3 hours
    • B、6 months
    • C、until last year
    • D、until last commit
    • E、until the point when the undotablespacewas refreshed
    • F、until the database is shut down and the memory erased

    正确答案:A

  • 第15题：

    You need to restore your database back to 9/30/2008 at 18：00. In what order would you run the following commands to compete this task？（）   a. restore controlfile until time `09/30/2008：18：00：00’ b. restore database until time `09/30/2008：18：00：00’  c. restore spfile until time `09/30/2008：18：00：00’ d. recover database until time `09/30/2008：18：00：00’ e. alter database open resetlogs f. alter database open

    • A、 b， d， e
    • B、 b， d， f
    • C、 c， a， b， d， e
    • D、 c， a， b， d， f
    • E、 a， b， d， e

    正确答案:A

  • 第16题：

    You work as a database administrator for Supportcenter.cn. Your database is configured for automatic undo management. UNDO_RETENTION is set to 3 hours. You want to flash back a table that was created last year. How far back can the flashback query go？（）

    • A、3 hours
    • B、6 months
    • C、until last year
    • D、until last commit
    • E、until the point when the undotablespacewas refreshed
    • F、until the database is shut down and the memory erased

    正确答案:A

  • 第17题：

    You are maintaining your database in Oracle10g. You perform a full user-managed backup every Sunday at 8：00 P.M. Your database is running in ARCHIVELOG mode. On Monday， at 9：00 A.M.， a tablespace is dropped. You decide to perform incomplete recovery to recover the dropped tablespace.  Which two clauses can you use with the RECOVER command？（）

    • A、 UNTIL SEQUENCE
    • B、 UNTIL SCN
    • C、 UNTIL CHANGE
    • D、 UNTIL CANCEL

    正确答案:C,D

  • 第18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19题：

    You work as a database administrator for Supportcenter.cn. Your database is in NOARCHIVELOG mode. The database has been configured with three redo logs groups， and there have been five log switches. You lost one non-system-critical data file from your database. Which method would you use to recover the data file？（）

    • A、Restore all the data files and open the database
    • B、Create the data file and perform tablespace recovery
    • C、No need to restore any file， just recover the database
    • D、Restore only the system data file and recover the database
    • E、Restore only lost date file and performtablespacerecovery

    正确答案:A

  • 第20题：

    单选题
    You work as a database administrator for Certkiller .com. Your database is in NOARCHIVELOG mode. The database has been configured with three redo logs groups， and there have been five log switches. You lost one non-system-critical data file from your database.  Which method would you use to recover the data file？（）
    A

    Restore all the data files and open the database

    B

    Create the data file and performtablespacerecovery

    C

    No need to restore any file， just recover the database

    D

    Restore only the system data file and recover the database

    E

    Restore only lost date file and performtablespacerecovery


    正确答案： E
    解析： 暂无解析

  • 第21题：

    单选题
    Data file DF1 belongs to tablespace TS1.，and the database is in ARCHIVELOG mode. You did an incomplete recover in the following steps：   1. Take data file DF1 offline.  2. Copy a backup copy of DF1 into the current DF1 location.  3. Execute RECOVER DATAFILE UNTIL TIME sometime in the past.  4. Bring DF1 online.  5. Execute ALTER DATABASE OPEN RESETLOGS.   To guarantee that the database is recoverable in the future， what is the least amount of work needed？（）
    A

    Back up the data file.

    B

    Bring tablespace TS1 online.

    C

    Copy redo logs to the backup directory.

    D

    Make a complete backup right after opening the database.


    正确答案： A
    解析： 暂无解析

  • 第22题：

    单选题
    Your Supportcenter.cn database is in ARCHIVELOG mode. The data file that belongs to the SYSTEM tablespace has become corrupted. Up to what point can you recover the database？（）
    A

    Until last commit

    B

    Until the time you perform recovery

    C

    Until the time the date file got corrupted

    D

    Until the point where the last transaction begun

    E

    You cannot recover the SYSTEMtablespaceand must re-create the database.


    正确答案： E
    解析： 暂无解析

  • 第23题：

    单选题
    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： B
    解析： 暂无解析

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