In your database， UNDO_RETENTION has been set to 600 sec and UNDO tablespace is configured for RETENTION GUARANTEE. Which statement regarding RETENTION GUARANTEE is true？ （）A、Undo data is retained until the next full database backup.B、No committed undo da

题目

In your database， UNDO_RETENTION has been set to 600 sec and UNDO tablespace is configured for RETENTION GUARANTEE. Which statement regarding RETENTION GUARANTEE is true？ （）

  • A、Undo data is retained until the next full database backup.
  • B、No committed undo data will be overwritten for 10 minutes.
  • C、Committed undo data will be kept forever if not overwritten within 600 seconds.
  • D、Guarantees that requested undo information are available until the instance is shut down.
相似考题

1.In which situation is the UNDO_RETENTION parameter be ignored， even if it is set to a value（）A、When the data file of the undo tablespace is autoextensibleB、When there are more than one undo tablespaces available in the databaseC、When the undo tablespace is of a fixed size and retention guarantee is not enabledD、When the undo tablespace is autoextensible and retention guarantee is not enabled

2.Users in your PROD database complain about the slow response of the transactions. While investigating the reason， you find that the transactions are waiting for the undo segments to be available， and undo retention has been set to zero. What would you do to overcome this problem？（）A、increase the undo retentionB、create more undo segmentsC、create another undo tablespaceD、increase the size of the undo tablespace

3.In which situation may the UNDO_RETENTION parameter be ignored， even if it is set to a value（）A、when the data file of the undo tablespace is autoextensibleB、when there are more than one undo tablespaces available in the databaseC、when the undo tablespace is of a fixed size and retention guarantee is not enabledD、when the undo tablespace is autoextensible and retention guarantee is not enabled

4.You are maintaining your database in Oracle10g. You set the value of the UNDO_RETENTION initialization parameter to zero in the initialization parameter file. What will be the impact of specifying this setting？（）  A、 The database will not start.B、 The database will start but will not retain the undo data in the undo segment.C、 The database will start， and the undo segment will contain the undo data for at least one hour.D、 The database will start， and the undo segment will retain the undo data for at least 15 minutes.

更多“In your database， UNDO_RETENTION has been set to 600 sec and UNDO tablespace is configured for RETENTION GUARANTEE. Which statement regarding RETENTION GUARANTEE is true？ （）A、Undo data is retained until the next full database backup.B、No committed undo da”相关问题

  • 第1题：

    You need to ensure that the database users should be able to use the various flashback query features in order to go back in time by four hours. What would you do to achieve this?（）

    • A、set SQL_TRACE=True 
    • B、set UNDO_RETENTION=14400 
    • C、set FAST_START_MTTR_TARGET=240 
    • D、set LOG_CHECKPOINT_INTERVAL=240 
    • E、set DB_FLASHBACK_RETENTION_TARGET=14400 
    • F、set the RETENTION GUARANTEE clause for the undo tablespace

    正确答案:B,E

  • 第2题：

    Your database is running under automatic undo management and the UNDO_RETENTION parameter is set to 900 sec. You executed the following command to enable retention guarantee：  SQL> ALTER TABLESPACE undotbs1 RETENTION GUARANTEE;  What effect would this statement have on the database？（）

    • A、The extents in undo tablespace retain data until the next full database backup.
    • B、The extents containing committed data in the undo tablespace are never overwritten.
    • C、The extents which no longer contain uncommitted data in the undo tablespace are not overwritten for at least15 minutes.
    • D、The extents containing committed data in the undo tablespace are not overwritten until the instance  is shut down.

    正确答案:C

  • 第3题：

    You work as a database administrator for Certkiller .com. The UNDO_RETENTION parameter in your database is set to 1000 and undoretention is not guaranteed. Which statement regarding retention of undo data is correct？（）

    • A、Undo data becomes obsolete after 1，000 seconds.
    • B、Undo data gets refreshed after 1，000 seconds.
    • C、Undo data will be stored permanently after 1，000 seconds.
    • D、Committed undo data would be retained for 1，000 seconds if free undo space is available.
    • E、Undo data will be retained in the UNDOtablespacefor 1，000 seconds， then it gets movedmovedto the TEMPORARYtablespaceto provide read consistency.

    正确答案:D

  • 第4题：

    You require the Oracle server to manage the undo segments and space among various active sessions automatically. You created an undo tablespace， UNDO_TBS1， in your database. Which two additional steps would you perform to achieve this？（）

    • A、Set the UNDO_RETENTION parameter to 900 or more.
    • B、Create an initial undo segment in the undo tablespace.
    • C、Enable the retention guarantee for the undo tablespace.
    • D、Set the UNDO_TABLESPACE parameter to UNDO_TBS1.
    • E、Set the UNDO_MANAGEMENT initialization parameter to AUTO.

    正确答案:D,E

  • 第5题：

    Which statement is true about the UNDO_RETENTION parameter when retention guarantee is not enabled（）

    • A、It is the time period after which the undo data becomes obsolete.
    • B、It is the time period after which the committed undo data would be transferred to a temporary tablespace.
    • C、It is the minimum time period up to which the committed undo data would be retained if free undo space isavailable.
    • D、It is the time period after which the undo data is transferred to the Flash Recovery Area to provide readconsistency.

    正确答案:C

  • 第6题：

    单选题
    In your database， UNDO_RETENTION has been set to 600 sec and UNDO tablespace is configured for RETENTION GUARANTEE. Which statement regarding RETENTION GUARANTEE is true？ （）
    A

    Undo data is retained until the next full database backup.

    B

    No committed undo data will be overwritten for 10 minutes.

    C

    Committed undo data will be kept forever if not overwritten within 600 seconds.

    D

    Guarantees that requested undo information are available until the instance is shut down.


    正确答案： A
    解析： 暂无解析

  • 第7题：

    单选题
    Your database instance is configured with automatic undo management and the UNDO_RETENTION parameter is set to 900 seconds. You executed the following command to enable retention guarantee： SQL> ALTER TABLESPACE undotbs1 RETENTION GUARANTEE； What effect would this command have on the database（）
    A

    The extents in the undo tablespace retain data until the next full database backup.

    B

    The extents containing committed undo in the undo tablespace are not overwritten for at least 15minutes.

    C

    The extents containing committed data in the undo tablespace are not overwritten until the instance isshut down.

    D

    The extents containing committed undo in the undo tablespace are transferred to Flash Recovery Areabefore being overwritten.


    正确答案： D
    解析： 暂无解析

  • 第8题：

    单选题
    Your database is running under automatic undo management and the UNDO_RETENTION parameter is set to 900 sec. You executed the following command to enable retention guarantee：  SQL> ALTER TABLESPACE undotbs1 RETENTION GUARANTEE;  What effect would this statement have on the database？（）
    A

    The extents in undo tablespace retain data until the next full database backup.

    B

    The extents containing committed data in the undo tablespace are never overwritten.

    C

    The extents which no longer contain uncommitted data in the undo tablespace are not overwritten for at least15 minutes.

    D

    The extents containing committed data in the undo tablespace are not overwritten until the instance  is shut down.


    正确答案： A
    解析： 暂无解析

  • 第9题：

    单选题
    Which statement is true about the UNDO_RETENTION parameter when retention guarantee is not enabled（）
    A

    It is the time period after which the undo data becomes obsolete.

    B

    It is the time period after which the committed undo data would be transferred to a temporary tablespace.

    C

    It is the minimum time period up to which the committed undo data would be retained if free undo space isavailable.

    D

    It is the time period after which the undo data is transferred to the Flash Recovery Area to provide readconsistency.


    正确答案： A
    解析： 暂无解析

  • 第10题：

    多选题
    You require the Oracle server to manage the undo segments and space among various active sessions automatically. You created an undo tablespace， UNDO_TBS1， in your database. Which two additional steps would you perform to achieve this？（）
    A

    Set the UNDO_RETENTION parameter to 900 or more.

    B

    Create an initial undo segment in the undo tablespace.

    C

    Enable the retention guarantee for the undo tablespace.

    D

    Set the UNDO_TABLESPACE parameter to UNDO_TBS1.

    E

    Set the UNDO_MANAGEMENT initialization parameter to AUTO.


    正确答案： E,D
    解析： 暂无解析

  • 第11题：

    单选题
    You work as a database administrator for Certkiller .com. The UNDO_RETENTION parameter in your database is set to 1000 and undoretention is not guaranteed. Which statement regarding retention of undo data is correct？（）
    A

    Undo data becomes obsolete after 1，000 seconds.

    B

    Undo data gets refreshed after 1，000 seconds.

    C

    Undo data will be stored permanently after 1，000 seconds.

    D

    Committed undo data would be retained for 1，000 seconds if free undo space is available.

    E

    Undo data will be retained in the UNDOtablespacefor 1，000 seconds， then it gets movedmovedto the TEMPORARYtablespaceto provide read consistency.


    正确答案： E
    解析： 暂无解析

  • 第12题：

    多选题
    You work as a database administrator for Certkiller .com. You want to create your database with the automatic undo management feature enable.Which two tasks must you perform to achieve this？（）
    A

    Set the UNDO_RETENTION parameter to AUTO.

    B

    Create an initial undo segment in undotablespace.

    C

    Set the UNDO_RETENTION parameter to 900 or more

    D

    Set the initialization parameter UNDO_MANAGEMENT to AUTO

    E

    Set the UNDO_MANAGEMENT parameter to the name of an undotablespace


    正确答案： A,C
    解析： 暂无解析

  • 第13题：

    You work as a database administrator for Certkiller .com. You want to create your database with the automatic undo management feature enable.Which two tasks must you perform to achieve this？（）

    • A、Set the UNDO_RETENTION parameter to AUTO.
    • B、Create an initial undo segment in undotablespace.
    • C、Set the UNDO_RETENTION parameter to 900 or more
    • D、Set the initialization parameter UNDO_MANAGEMENT to AUTO
    • E、Set the UNDO_MANAGEMENT parameter to the name of an undotablespace

    正确答案:D,E

  • 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：

    Which statement is true about the UNDO_RETENTION parameter when retention guarantee is notenabled（）

    • A、It is the time period after which the undo data becomes obsolete.
    • B、It is the time period after which the committed undo data would be transferred to a temporarytablespace.
    • C、It is the minimum time period up to which the committed undo data would be retained if free undo spaceis available.
    • D、It is the time period after which the undo data is transferred to the Flash Recovery Area to provide readconsistency.

    正确答案:C

  • 第16题：

    Your database instance is configured with automatic undo management and the UNDO_RETENTION parameter is set to 900 seconds. You executed the following command to enable retention guarantee： SQL> ALTER TABLESPACE undotbs1 RETENTION GUARANTEE； What effect would this command have on the database（）

    • A、The extents in the undo tablespace retain data until the next full database backup.
    • B、The extents containing committed undo in the undo tablespace are not overwritten for at least 15minutes.
    • C、The extents containing committed data in the undo tablespace are not overwritten until the instance isshut down.
    • D、The extents containing committed undo in the undo tablespace are transferred to Flash Recovery Areabefore being overwritten.

    正确答案:B

  • 第17题：

    The UNDO_RETENTION parameter in your database is set to 1000 and undo retention is not guaranteed. Which statement regarding retention of undo data is correct？（）

    • A、Undo data becomes obsolete after 1，000 seconds.
    • B、Undo data gets refreshed after every 1，000 seconds.
    • C、Undo data will be stored permanently after 1，000 seconds.
    • D、Committed undo data would be retained for 1，000 seconds if free undo space is available.
    • E、Undo data will be retained in the UNDO tablespace for 1，000 seconds，then it gets moved to the TEMPORARY tablespace to provide read consistency.

    正确答案:D

  • 第18题：

    单选题
    AUM has been retaining about 15 minutes worth of undo. You want to double the retentionperiod， but not at the expense of new transactions failing. You decide to alter the system to set the parameter UNDO_RETENTION=18000. However， AUM still retains only about 15 minutes worth of undo.  What is the problem？ （）
    A

     You need to alter the undo tablespace to add the RETENTION GUARANTEE setting.

    B

     You need to increase the size of the undo tablespace.

    C

     The undo tablespace is not set to auto-extend.

    D

     You need to alter the Recycle Bin to add the RETENTION GUARANTEE setting.


    正确答案： A
    解析： 暂无解析

  • 第19题：

    单选题
    Your database instance is configured with automatic undo management and the UNDO_RETENTIONparameter is set to 900 seconds. You executed the following command to enable retention guarantee: SQL> ALTER TABLESPACE undotbs1 RETENTION GUARANTEE;  What effect would this command have onthe database（）
    A

    The extents in the undo tablespace retain data until the next full database backup.

    B

    The extents containing committed undo in the undo tablespace are not overwritten for at least 15 minutes.

    C

    The extents containing committed data in the undo tablespace are not overwritten until the instance is shutdown.

    D

    The extents containing committed undo in the undo tablespace are transferred to Flash Recovery Areabefore being overwritten


    正确答案： A
    解析： 暂无解析

  • 第20题：

    单选题
    Which statement is true about the UNDO_RETENTION parameter when retention guarantee is notenabled（）
    A

    It is the time period after which the undo data becomes obsolete.

    B

    It is the time period after which the committed undo data would be transferred to a temporarytablespace.

    C

    It is the minimum time period up to which the committed undo data would be retained if free undo spaceis available.

    D

    It is the time period after which the undo data is transferred to the Flash Recovery Area to provide readconsistency.


    正确答案： D
    解析： 暂无解析

  • 第21题：

    单选题
    The UNDO_RETENTION parameter in your database is set to 1000 and undo retention is not guaranteed. Which statement regarding retention of undo data is correct？（）
    A

    Undo data becomes obsolete after 1，000 seconds.

    B

    Undo data gets refreshed after every 1，000 seconds.

    C

    Undo data will be stored permanently after 1，000 seconds.

    D

    Committed undo data would be retained for 1，000 seconds if free undo space is available.

    E

    Undo data will be retained in the UNDO tablespace for 1，000 seconds，then it gets moved to the TEMPORARY tablespace to provide read consistency.


    正确答案： E
    解析： 暂无解析

  • 第22题：

    单选题
    You are maintaining your database in Oracle10g. You set the value of the UNDO_RETENTION initialization parameter to zero in the initialization parameter file. What will be the impact of specifying this setting？（）
    A

     The database will not start.

    B

     The database will start but will not retain the undo data in the undo segment.

    C

     The database will start， and the undo segment will contain the undo data for at least one hour.

    D

     The database will start， and the undo segment will retain the undo data for at least 15 minutes.


    正确答案： B
    解析： 暂无解析

  • 第23题：

    多选题
    Which three pieces of information are considered while deciding the size of the undo tablespace in your database？（）
    A

    the size of an undo block

    B

    the size of the redo log files

    C

    undo blocks generated per second

    D

    the size of the database buffer cache

    E

    the value of the UNDO_RETENTION parameter


    正确答案： C,B
    解析： 暂无解析

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