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Flashback Database relies on which technologies to recover to a point in time？（）  A、 Flashback Data ArchiveB、 Flashback logs in the flash recovery areaC、 FlashbUndo tablespaceD、 RMAN command lineE、 None of the above

题目

Flashback Database relies on which technologies to recover to a point in time？（）  

  • A、 Flashback Data Archive
  • B、 Flashback logs in the flash recovery area
  • C、 FlashbUndo tablespace
  • D、 RMAN command line
  • E、 None of the above
相似考题

1.Which three actions are required to configure the Flashback Database? ()A. set Flash Recovery AreaB. enable Flashback loggingC. create FLASHBACK tablespaceD. start the database in the ARCHIVELOG modeE. start the database in the NOARCHIVELOG mode

2.Youarerequiredtoflashbackyourdatabase.Youwanttofindtheamountofflashbackdatageneratedsincethedatabasewasopened.Whichtaskwillyouperformtoobtaintherequiredinformation?()A.QuerytheV$FLASHBACK_DATABASE_LOGview.B.QuerytheV$FLASHBACK_DATABASE_STATview.C.CheckthevalueoftheDB_FLASHBACK_RETENTION_TARGETinitializationparameter.D.QuerytheV$RECOVERY_FILE_DESTview.

3.You want to flash back a test database by five hours.You issue this command:SQL > FLASHBACK DATABASE TO TIMESTAMP (SYSDATE － 5／24);Which two statements are true about this flashback scenario?()A. The database must have multiplexed redo logs for the flashback to succeed.B. The database must be MOUNTED for the flashback to succeed.C. The database must use block change tracking for the flashback to succeed.D. The database must be opened in restricted mode for the flashback to succeed.E. The database must be opened with the RESETLOGS option after the flashback is complete.F. The database must be opened in read-only mode to check if the database has been flashed back to the correct SCN.

4.ThesearethedetailsaboutV$FLASHBACK_DATABASE_STAT：SQL>DESCV$FLASHBACK_DATABASE_STATNameNull？Type-----------------------------------BEGIN_TIMEDATEEND_TIMEDATEFLASHBACK_DATANUMBERDB_DATANUMBERREDO_DATANUMBERESTIMATED_FLASHBACK_SIZENUMBERWhichtwostatementsregardingtheV$FLASHBACK_DATABASE_STATviewaretrue？（）A.BEGIN_TIMEisthetimeatwhichFlashbackloggingisenabled.B.END_TIMEisthetimeatwhichthequeryisexecutedontheview.C.REDO_DATAisthenumberofbytesofredodatawrittenduringtheinterval.D.Thisviewcontainsinformationaboutflashbackdatapertainingtothelast24hours.E.FLASHBACK_DATAistheamountofflashbackdatageneratedsincethedatabasewasopened.

更多“Flashback Database r”相关问题

  • 第1题：

    You are working on an Oracle Database 10g database. You enabled the Flashback Database feature. Which two statements regarding flashback logs are true？ （）

    • A、 Flashback logs are not archived.
    • B、 Flashback logs are maintained in redo log files.
    • C、 Flashback logs are maintained in the Flash Recovery Area.
    • D、 Flashback logs are used to maintain Flashback Database related errors.
    • E、 Flashback logs need to be cleared manually after you disable Flashback Database.

    正确答案:A,C

  • 第2题：

    Your Oracle Database 10g is online when you execute the following statement：        SQL>ALTER TABLESPACE MY_TABLESPACE FLASHBACK OFF；   What is the result of executing this statement if the Flashback Database feature is already enabled in the database？（）

    • A、 The database does not record flashback logs for MY_TABLESPACE
    • B、 The tables residing in MY_TABLESPACE are not protected by the Recycle Bin.
    • C、 All the tablespaces except MY_TABLESPACE can be recovered using Flashback Database feature.
    • D、 None of the flashback technologies， such as Flashback Table， Flashback Transaction Query and Flashback Version Query can be used to recover individual rows within the objects from MY_TABLESPACE

    正确答案:A

  • 第3题：

    You plan to execute the following command to perform a Flashback Database operation in your database：   SQL> FLASHBACK DATABASE TO TIMESTAMP （SYSDATE -5/24）；   Which two statements are true about this？（）

    • A、 The database must have multiplexed redo log files
    • B、 The database must be in the MOUNT state to execute the command
    • C、 The database must be in the NOMOUNT state to execute the command
    • D、 The database must be opened in RESTRICTED mode before this operation
    • E、 The database must be opened with the RESETLOGS option after the flashback operation

    正确答案:B,E

  • 第4题：

    You executed the following query in your database： SELECT oldest_flashback_scn， oldest_flashback_time FROM V$FLASHBACK_DATABASE_LOG； What would you determine from the output？（）

    • A、 The time when the last flashback operation in your database was performed.
    • B、 The time when the first flashback operation in your database was performed.
    • C、 A list of flashback operations performed in your database using SCN and time.
    • D、 The approximate time and the lowest system change number （SCN） to which you can flash back your database.

    正确答案:D

  • 第5题：

    You are working on an Oracle Database 10g database. Because of data loss， you decided to perform a Flashback Database operation using the following command：  SQL> FLASHBACK DATABASE TO TIMESTAMP（SYSDATE ？5/24）； Which two statements are true？ （）

    • A、 SYSDATE should not be used with TIMESTAMP.
    • B、 The database must have multiplexed redo log files.
    • C、 The database must be in the MOUNT state to execute the command.
    • D、 The database must be opened with the RESETLOGS option after the flashback operation.
    • E、 The entire database needs to be restored from the most recent backup before the flashback operation.

    正确答案:C,D

  • 第6题：

    You are required to flashback your database. You want to find the amount of flashback data generated since the database was opened. Which task will you perform to obtain the required information？（）

    • A、 Query the V$FLASHBACK_DATABASE_LOG view.
    • B、 Query the V$FLASHBACK_DATABASE_STAT view.
    • C、 Check the value of the DB_FLASHBACK_RETENTION_TARGET initialization parameter.
    • D、 Query the V$RECOVERY_FILE_DEST view.

    正确答案:B

  • 第7题：

    Which three actions are required to configure the Flashback Database？（）  

    • A、 set Flash Recovery Area
    • B、 enable Flashback logging
    • C、 create FLASHBACK tablespace
    • D、 start the database in the ARCHIVELOG mode
    • E、 start the database in the NOARCHIVELOG mode

    正确答案:A,B,D

  • 第8题：

    多选题
    Which three actions are required to configure the Flashback Database？（）
    A

    set Flash Recovery Area

    B

    enable Flashback logging

    C

    create FLASHBACK tablespace

    D

    start the database in the ARCHIVELOG mode

    E

    start the database in the NOARCHIVELOG mode


    正确答案： D,B
    解析： 暂无解析

  • 第9题：

    多选题
    You are working on an Oracle Database 10g database. You enabled the Flashback Database feature. Which two statements regarding flashback logs are true？ （）
    A

    Flashback logs are not archived.

    B

    Flashback logs are maintained in redo log files.

    C

    Flashback logs are maintained in the Flash Recovery Area.

    D

    Flashback logs are used to maintain Flashback Database related errors.

    E

    Flashback logs need to be cleared manually after you disable Flashback Database.


    正确答案： A,C
    解析： 暂无解析

  • 第10题：

    单选题
    Your Oracle Database 10g is online when you execute the following statement：        SQL>ALTER TABLESPACE MY_TABLESPACE FLASHBACK OFF；   What is the result of executing this statement if the Flashback Database feature is already enabled in the database？（）
    A

     The database does not record flashback logs for MY_TABLESPACE

    B

     The tables residing in MY_TABLESPACE are not protected by the Recycle Bin.

    C

     All the tablespaces except MY_TABLESPACE can be recovered using Flashback Database feature.

    D

     None of the flashback technologies， such as Flashback Table， Flashback Transaction Query and Flashback Version Query can be used to recover individual rows within the objects from MY_TABLESPACE


    正确答案： A
    解析： 暂无解析

  • 第11题：

    多选题
    You are maintaining a database that is in ARCHIVELOG mode. You have configured the flash recovery area in your database. The database is in MOUNT EXCLUSIVE mode， and you want to configure the Flashback Database feature. Which two options are NOT required to configure the Flashback Database feature？ （）
    A

    Open the database in read-only mode.

    B

    Set the retention target with the DB_FLASHBACK_RETENTION_TARGET initialization parameter.

    C

    Enable the block change tracking feature.

    D

    Execute the ALTER DATABASE FLASHBACK ON statement.


    正确答案： A,D
    解析： 暂无解析

  • 第12题：

    单选题
    You are managing a single instance Oracle 10g database that utilizes the following parameters：  Which of the following set of commands must you execute to enable Flashback Database？（）
    A

      STARTUP MOUNT EXCLUSIVE  ALTER DATABASE FLASHBACK ON；  ALTER DATABASE OPEN；

    B

      STARTUP MOUNT  ALTER DATABASE FLASHBACK ON；  ALTER DATABASE OPEN RESETLOGS；

    C

      STARTUP MOUNT EXCLUSIVE  ATLER DATABASE ARCHIVELOG；  ALTER DATABASE FLASHBACK ON；  ALTER DATABASE OPEN RESETLOGS；

    D

      STARTUP MOUNT  ALTER DATABASE ARCHIVELOG；  ALTER DATABASE FLASHBACK ON；  ALTER DATABASE OPEN；


    正确答案： A
    解析： 暂无解析

  • 第13题：

    Which background process sequentially writes Flashback Database data from the flashback buffer to the Flashback Database logs？（）

    • A、 DBWn
    • B、 RECO
    • C、 RVWR
    • D、 LGWR

    正确答案:C

  • 第14题：

    You are maintaining the SALES database for an organization. You have enabled the Flashback Database feature and want to estimate the flashback space required for future operations.  Which view would you query to estimate the flashback space required？（）

    • A、 V$DATABASE
    • B、 V$FLASHBACK_DATABASE_STAT
    • C、 V$FLASHBACK_DATABASE_LOG
    • D、 V$RECOVERY_FILE_DEST

    正确答案:B

  • 第15题：

    The database is currently running in the NOARCHIVELOG mode. What would be the first step to configure Flashback Database？（）

    • A、 Enable flashback logging.
    • B、 Start the database in the ARCHIVELOG mode.
    • C、 Issue the ALTER DATABASE FLASHBACK ON； command.
    • D、 Set the FAST_START_MTTR_TARGET initialization parameter.

    正确答案:A

  • 第16题：

    You are managing a single instance Oracle 10g database that utilizes the following parameters：  Which of the following set of commands must you execute to enable Flashback Database？（）

    • A、  STARTUP MOUNT EXCLUSIVE  ALTER DATABASE FLASHBACK ON；  ALTER DATABASE OPEN；
    • B、  STARTUP MOUNT  ALTER DATABASE FLASHBACK ON；  ALTER DATABASE OPEN RESETLOGS；
    • C、  STARTUP MOUNT EXCLUSIVE  ATLER DATABASE ARCHIVELOG；  ALTER DATABASE FLASHBACK ON；  ALTER DATABASE OPEN RESETLOGS；
    • D、  STARTUP MOUNT  ALTER DATABASE ARCHIVELOG；  ALTER DATABASE FLASHBACK ON；  ALTER DATABASE OPEN；

    正确答案:D

  • 第17题：

    You executed the following query in your database：  FROM V$FLASHBACK_DATABASE_LOG;  What would you determine from the output？（）

    • A、the time when the last flashback operation in your database was performed
    • B、the time when the first flashback operation in your database was performed
    • C、a list of flashback operations performed in your database using SCN and time
    • D、the approximate time and the lowest system change number （SCN） to which you can flash back your database

    正确答案:D

  • 第18题：

    Which three statements are true about Flashback Database?（）

    • A、Flashback logs are written sequentially, and are archived.
    • B、Flashback Database uses a restored control file to recover a database.
    • C、The Oracle database automatically creates, deletes, and resides flashback logs in the Fast RecoveryArea.
    • D、Flashback Database can recover a database to the state that it was in before a reset logs operation.
    • E、Flashback Database can recover a data file that was dropped during the span of time of the flashback.
    • F、Flashback logs are used to restore to the blocks' before images, and then the redo data may be used to roll forward to the desired flashback time.

    正确答案:B,C,F

  • 第19题：

    多选题
    You plan to execute the following command to perform a Flashback Database operation in your database: SQL> FLASHBACK DATABASE TO TIMESTAMP (SYSDATE -5/24); Which two statements are true about this?（）
    A

    The database must have multiplexed redo log files

    B

    The database must be in the MOUNT state to execute the command

    C

    The database must be in the NOMOUNT state to execute the command

    D

    The database must be opened in RESTRICTED mode before this operation

    E

    The database must be opened with the RESETLOGS option after the flashback operation


    正确答案： B,C
    解析： 暂无解析

  • 第20题：

    单选题
    The database is currently running in the NOARCHIVELOG mode. What would be the first step to configure Flashback Database？（）
    A

     Enable flashback logging.

    B

     Start the database in the ARCHIVELOG mode.

    C

     Issue the ALTER DATABASE FLASHBACK ON； command.

    D

     Set the FAST_START_MTTR_TARGET initialization parameter.


    正确答案： A
    解析： 暂无解析

  • 第21题：

    单选题
    You executed the following query in your database： SELECT oldest_flashback_scn， oldest_flashback_time FROM V$FLASHBACK_DATABASE_LOG； What would you determine from the output？（）
    A

     The time when the last flashback operation in your database was performed.

    B

     The time when the first flashback operation in your database was performed.

    C

     A list of flashback operations performed in your database using SCN and time.

    D

     The approximate time and the lowest system change number （SCN） to which you can flash back your database.


    正确答案： B
    解析： 暂无解析

  • 第22题：

    单选题
    You are maintaining the SALES database for an organization. You have enabled the Flashback Database feature and want to estimate the flashback space required for future operations.  Which view would you query to estimate the flashback space required？（）
    A

     V$DATABASE

    B

     V$FLASHBACK_DATABASE_STAT

    C

     V$FLASHBACK_DATABASE_LOG

    D

     V$RECOVERY_FILE_DEST


    正确答案： A
    解析： 暂无解析

  • 第23题：

    单选题
    Which background process sequentially writes Flashback Database data from the flashback buffer to the Flashback Database logs？（）
    A

     DBWn

    B

     RECO

    C

     RVWR

    D

     LGWR


    正确答案： A
    解析： 暂无解析

  • 第24题：

    单选题
    You executed the following query in your database：  FROM V$FLASHBACK_DATABASE_LOG;  What would you determine from the output？（）
    A

    the time when the last flashback operation in your database was performed

    B

    the time when the first flashback operation in your database was performed

    C

    a list of flashback operations performed in your database using SCN and time

    D

    the approximate time and the lowest system change number （SCN） to which you can flash back your database


    正确答案： A
    解析： 暂无解析

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