单选题You decide to enable Flashback Database in your Oracle 10g database so that future recoveries will take less time than traditional recoveries. Which of the following parameters must be included in your initialization parameter file before enabling Flas

题目
单选题
You decide to enable Flashback Database in your Oracle 10g database so that future recoveries will take less time than traditional recoveries. Which of the following parameters must be included in your initialization parameter file before enabling Flashback Database?()
A

 DB_RECOVERY_FILE_DEST only

B

 DB_FLASHBACK_RETENTION_TARGET only

C

 DB_RECOVERY_FILE_DEST_SIZE and DB_RECOVERY_FILE_DEST only

D

 DB_RECOVERY_FILE_DEST and DB_FLASHBACK_RETENTION_TARGET only

E

 DB_RECOVERY_FILE_DEST_SIZE, DB_RECOVERY_FILE_DEST and

F

 DB_FLASHBACK_RETENTION_TARGET


相似考题
参考答案和解析
正确答案: F
解析: 暂无解析
更多“You decide to enable Flashback Database in your Oracle 10g d”相关问题
  • 第1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2题:

    You decide to enable Flashback Database in your Oracle 10g database so that future recoveries will take less time than traditional recoveries. Which of the following parameters must be included in your initialization parameter file before enabling Flashback Database?()

    • A、 DB_RECOVERY_FILE_DEST only
    • B、 DB_FLASHBACK_RETENTION_TARGET only
    • C、 DB_RECOVERY_FILE_DEST_SIZE and DB_RECOVERY_FILE_DEST only
    • D、 DB_RECOVERY_FILE_DEST and DB_FLASHBACK_RETENTION_TARGET only
    • E、 DB_RECOVERY_FILE_DEST_SIZE, DB_RECOVERY_FILE_DEST and
    • F、 DB_FLASHBACK_RETENTION_TARGET

    正确答案:C

  • 第3题:

    You dropped a schema of a user in an Oracle 10g by mistake. You decide to flash the database back to its previous state to restore the deleted schema.   Which process writes the before images of the physical database blocks to the flashback database logs?()

    • A、 LGWR
    • B、 DBWR
    • C、 MMON
    • D、 RVWR

    正确答案:D

  • 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 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6题:

    You are performing flashback of the ORDERS table in the Scott’s schema because some important data is deleted in the table by mistake. The SCN number was 771513 at the time of deletion. You issued the following statement to perform Flashback Table:  SQL> FLASHBACK TABLE ORDERS TO SCN 771513;   What is the prerequisite to perform Flashback Table?()

    • A、 You must configure OMF in your database.
    • B、 You must enable block change tracking feature in your database.
    • C、 You must enable ROW MOVEMENT feature on the ORDERS table.
    • D、 You must use the Flashback Version Query before using the Flashback Table feature.

    正确答案:C

  • 第7题:

    单选题
    You are working as a DBA at NetFx Corporation. You discover that the SCOTT schema is deleted by mistake. You decide to flash the database back to the time when the schema existed. Which view will you query to determine the estimated size of the flashback data that you require for your current target retention?()
    A

     V$FLASHBACK_DATABASE_LOG

    B

     V$FLASHBACK_DATABASE_STAT

    C

     V$DATABASE

    D

     V$UNDOSTAT


    正确答案: A
    解析: 暂无解析

  • 第8题:

    单选题
    You have not configured Oracle Managed Files (OMF) in your database. You do not want to scan the entire datafile every time an incremental backup is performed. You decide to enable the block change tracking feature.Which statement should you use to enable the block change tracking feature?()
    A

    ALTER DATABASE ENABLE BLOCK CHANGE TRACKING

    B

    ALTER SYSTEM ENABLE BLOCK CHANGE TRACKING USING FILE

    C

    ALTER DATABASE ENABLE BLOCK CHANGE TRACKING USING FILE

    D

    ALTER SYSTEM ENABLE BLOCK CHANGE TRACKING


    正确答案: D
    解析: 暂无解析

  • 第9题:

    单选题
    You decide to enable Flashback Database in your Oracle 10g database so that future recoveries will take less time than traditional recoveries. Which of the following parameters must be included in your initialization parameter file before enabling Flashback Database?()
    A

     DB_RECOVERY_FILE_DEST only

    B

     DB_FLASHBACK_RETENTION_TARGET only

    C

     DB_RECOVERY_FILE_DEST_SIZE and DB_RECOVERY_FILE_DEST only

    D

     DB_RECOVERY_FILE_DEST and DB_FLASHBACK_RETENTION_TARGET only

    E

     DB_RECOVERY_FILE_DEST_SIZE, DB_RECOVERY_FILE_DEST and

    F

     DB_FLASHBACK_RETENTION_TARGET


    正确答案: D
    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:

    单选题
    You dropped a schema of a user in an Oracle 10g by mistake. You decide to flash the database back to its previous state to restore the deleted schema.   Which process writes the before images of the physical database blocks to the flashback database logs?()
    A

     LGWR

    B

     DBWR

    C

     MMON

    D

     RVWR


    正确答案: C
    解析: 暂无解析

  • 第12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

  • 第13题:

    You have not configured Oracle Managed Files (OMF) in your database. You do not want to scan the entire datafile every time an incremental backup is performed. You decide to enable the block change tracking feature. Which statement will you use to enable the block change tracking feature?()

    • A、 ALTER SYSTEM ENABLE BLOCK CHANGE TRACKING;
    • B、 ALTER DATABASE ENABLE BLOCK CHANGE TRACKING;
    • C、 ALTER SYSTEM ENABLE BLOCK CHANGE TRACKING USING FILE 
    • D、 ALTER DATABASE ENABLE BLOCK CHANGE TRACKING USING FILE 

    正确答案:D

  • 第14题:

    You are working as a DBA at NetFx Corporation. You discover that the SCOTT schema is deleted by mistake. You decide to flash the database back to the time when the schema existed. Which view will you query to determine the estimated size of the flashback data that you require for your current target retention?()

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

    正确答案:A

  • 第15题:

    You can use Oracle Flashback to look at past activity in your database. What are two other characteristics of Oracle Flashback?()

    • A、Oracle Flashback uses undo information to construct consistent data. 
    • B、You can use a cursor opened while using an Oracle Flashback image to perform DML once you deactivate Oracle Flashback in your session. 
    • C、You can only use Oracle Flashback view of the data if the required records are still in the online redo log files. 
    • D、Oracle Flashback lists the DML that was executed during the period you identify when initiating your session. 

    正确答案:A,B

  • 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:

    Flashback Database is enabled in your Oracle 10g database. One of your database users erroneously purged an important table residing in his schema. The table was purged sometime between 10:00 P.M. and 10:30 P.M. The next day, you decide to flash back the database. Before you flash back the database, you want to ensure that you have all the necessary flashback data. Which dynamic performance view must you use to determine whether you have the required flashback data to recover the purged table?()

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

    正确答案:C

  • 第18题:

    单选题
    You have not configured Oracle Managed Files (OMF) in your database. You do not want to scan the entire datafile every time an incremental backup is performed. You decide to enable the block change tracking feature. Which statement should you use to enable the block change tracking feature?()
    A

    ALTER DATABASE ENABLE BLOCK CHANGE TRACKING;

    B

    ALTER SYSTEM ENABLE BLOCK CHANGE TRACKING USING FILE <path>;

    C

    ALTER DATABASE ENABLE BLOCK CHANGE TRACKING USING FILE <path>;

    D

    ALTER SYSTEM ENABLE BLOCK CHANGE TRACKING;


    正确答案: D
    解析: 暂无解析

  • 第19题:

    多选题
    You can use Oracle Flashback to look at past activity in your database. What are two other characteristics of Oracle Flashback?()
    A

    Oracle Flashback uses undo information to construct consistent data.

    B

    You can use a cursor opened while using an Oracle Flashback image to perform DML once you deactivate Oracle Flashback in your session.

    C

    You can only use Oracle Flashback view of the data if the required records are still in the online redo log files.

    D

    Oracle Flashback lists the DML that was executed during the period you identify when initiating your session.


    正确答案: D,C
    解析: 暂无解析

  • 第20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 performing flashback of the ORDERS table in the Scott’s schema because some important data is deleted in the table by mistake. The SCN number was 771513 at the time of deletion. You issued the following statement to perform Flashback Table:  SQL> FLASHBACK TABLE ORDERS TO SCN 771513;   What is the prerequisite to perform Flashback Table?()
    A

     You must configure OMF in your database.

    B

     You must enable block change tracking feature in your database.

    C

     You must enable ROW MOVEMENT feature on the ORDERS table.

    D

     You must use the Flashback Version Query before using the Flashback Table feature.


    正确答案: B
    解析: 暂无解析

  • 第23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24题:

    单选题
    You have not configured Oracle Managed Files (OMF) in your database. You do not want to scan the entire datafile every time an incremental backup is performed. You decide to enable the block change tracking feature.  Which statement should you use to enable the block change tracking feature?()
    A

     ALTER DATABASE ENABLE BLOCK CHANGE TRACKING

    B

     ALTER SYSTEM ENABLE BLOCK CHANGE TRACKING USING FILE 

    C

     ALTER DATABASE ENABLE BLOCK CHANGE TRACKING USING FILE 

    D

     ALTER SYSTEM ENABLE BLOCK CHANGE TRACKING


    正确答案: C
    解析: 暂无解析