Your database instance is running with full workload after database creation. You have decided to use a fixed-size undo tablespace. You want to use the Undo Advisor to estimate the capacity of the undo tablespace. Which two factors must you consider befo

题目

Your database instance is running with full workload after database creation. You have decided to use a fixed-size undo tablespace. You want to use the Undo Advisor to estimate the capacity of the undo tablespace. Which two factors must you consider before using the Undo Advisor to estimate the capacity of the undotablespace（）

  • A、The retention period to support flashback
  • B、The expected length of the longest-running query
  • C、The number of undo tablespaces in the database
  • D、The size of the Flash Recovery Area for the database instance
相似考题

1.You want to use the Flashback Transaction Query feature to identify all the changes made to your database within a specific time period. What is a prerequisite for using the Flashback Transaction Query feature？（）A、 You must use automatic undo management in the database.B、 You must configure OMF in your database.C、 You must configure ASM for storing the datafiles.D、 You must multiplex the online redo log file.

2.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.

3.You are maintaining your OLTP database in Oracle10g. You are performing the Flashback Transaction Query to find the undo SQL statements that can be used to undo the changes made to the database in the specific time period. Which pseudocolumn will you use to perform the Flashback Transaction Query？（）A、 VERSIONS_STARTSCNB、 VERSIONS_STARTTIMEC、 VERSIONS_XIDD、 VERSIONS_OPERATION

4. Your database instance is running with full workload after database creation. You have decided to useafixed-sizeundo tablespace. You want to use the Undo Advisor to estimate the capacity of the undotablespace.  Which two factors must you consider before using the Undo Advisor to estimate the capacity of the undotablespace（）A、the retention period to support flashbackB、the expected length of the longest-running queryC、the number of undo tablespaces in the databaseD、the size of the Flash Recovery Area for the database instance

更多“Your database instance is running with full workload after database creation. You have decided to use a fixed-size undo tablespace. You want to use the Undo Advisor to estimate the capacity of the undo tablespace. Which two factors must you consider befor”相关问题

  • 第1题：

    You work as a database administrator for Certkiller .com. In your production  database， the size of Database Buffer Cache needs to be increased immediately for the current as well as future instances of the database. The Oracle instance has been configured to accommodate any changes in the size of the memory structures. At this is production database， you want to accomplish this task with no impact on the user’s connections.  Which activity must you have completed before accomplishing this task？（）

    • A、You must have started the database instance in restricted mode.
    • B、You must have started the database instance inNORMALmode.
    • C、You must have started the database instance with server parameter file.
    • D、You must have started the database instance but must not have mounted.
    • E、You must have started the database instance but must not have opened.

    正确答案:C

  • 第2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3题：

    You noticed that the index tablespace in your database requires a recovery. However， instead of performing a media recovery， you decided to re-create the indexes in a new tablespace. Which two options would you use to reduce the time it takes to re-create the indexes？（）

    • A、 ONLINE
    • B、 REVERSE
    • C、 PARALLEL
    • D、 COMPRESS
    • E、 NOLOGGING
    • F、 COMPUTE STATISTICS

    正确答案:C,E

  • 第4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5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6题：

    You have a long-running process you want to assign to a specific UNDO segment brought online for that express purpose. You are not using automatic UNDO management. What statement can be used for this task? （）

    • A、ALTER DATABASE 
    • B、SET TRANSACTION 
    • C、ALTER ROLLBACK SEGMENT 
    • D、ALTER TABLE

    正确答案:B

  • 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
    You want to use the Flashback Transaction Query feature to identify all the changes made to your database within a specific time period. What is a prerequisite for using the Flashback Transaction Query feature？（）
    A

     You must use automatic undo management in the database.

    B

     You must configure OMF in your database.

    C

     You must configure ASM for storing the datafiles.

    D

     You must multiplex the online redo log file.


    正确答案： C
    解析： 暂无解析

  • 第9题：

    多选题
    Your database instance is running with full workload after database creation. You have decided to use a fixed-size undo tablespace. You want to use the Undo Advisor to estimate the capacity of the undo tablespace. Which two factors must you consider before using the Undo Advisor to estimate the capacity of the undotablespace（）
    A

    The retention period to support flashback

    B

    The expected length of the longest-running query

    C

    The number of undo tablespaces in the database

    D

    The size of the Flash Recovery Area for the database instance


    正确答案： D,B
    解析： 暂无解析

  • 第10题：

    多选题
    Your database instance is running with full workload after database creation. You have decided to useafixed-sizeundo tablespace. You want to use the Undo Advisor to estimate the capacity of the undotablespace.  Which two factors must you consider before using the Undo Advisor to estimate the capacity of the undotablespace（）
    A

    the retention period to support flashback

    B

    the expected length of the longest-running query

    C

    the number of undo tablespaces in the database

    D

    the size of the Flash Recovery Area for the database instance


    正确答案： D,A
    解析： 暂无解析

  • 第11题：

    多选题
    Your database instance is running with full workload after database creation. You have decided to use a fixed-size undo tablespace. You want to use the Undo Advisor to estimate the capacity of the undo tablespace. Which two factors must you consider before using the Undo Advisor to estimate the capacity of the undotablespace（）
    A

    The retention period to support flashback

    B

    The expected length of the longest-running query

    C

    The number of undo tablespaces in the database

    D

    The size of the Flash Recovery Area for the database instance


    正确答案： C,A
    解析： 暂无解析

  • 第12题：

    多选题
    You noticed that the index tablespace in your database requires a recovery. However， instead of performing a media recovery， you decided to re/x7fcreate the indexes in a new tablespace. Which two options would you use to reduce the time it takes to re/x7fcreate the indexes？（）
    A

    ONLINE

    B

    REVERSE

    C

    PARALLEL

    D

    COMPRESS

    E

    NOLOGGING

    F

    COMPUTE STATISTICS


    正确答案： C,A
    解析： 暂无解析

  • 第13题：

    You are maintaining the SALES database for eSoft Corporation. You have not configured ASMM on the database. You want to know what size of the SGA will provide the best performance.  Which advisor would you use to determine the suitable size of the SGA？（）

    • A、 SQL Tuning Advisor
    • B、 Undo Advisor
    • C、 ADDM
    • D、 Memory Advisor

    正确答案:D

  • 第14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15题：

    You are working as a DBA on the decision support system. There is a business requirement to track and store all transactions for at least three years for a few tables in the database. Automatic undo management is enabled in the database.  Which configuration should you use to accomplish this task？（）

    • A、 Enable Flashback Data Archive for the tables.
    • B、 Specify undo retention guarantee for the database.
    • C、 Enable supplemental logging for the database.
    • D、 Query V$UNDOSTAT to determine the amount of undo that will be generated and create an undo  tablespace for that size.
    • E、 Create Flashback Data Archive on the tablespace on which the tables are stored.

    正确答案:A

  • 第16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17题：

    The system was running a normal workload during the last 24 hours. You need to ensure that with the same workload you should be able to flashback tables by three hours. What would you do to find the system recommendations for the undo retention period and the undo tablespace size?（）

    • A、set DB_FLASHBACK_RETENTION_TARGET=10800  
    • B、create a new scheduler window for the time period of 24 hours and use the optimizer statistics 
    • C、modify the Automatic Workload Repository (AWR) snapshot time interval to three hours and use ADDMfindings 
    • D、specify New Undo Retention as three hours and Analysis Time period as Last One Day in the Undo Advisor page and use its recommendations

    正确答案:D

  • 第18题：

    单选题
    You have 100 segments in the USERS tablespace. You get an alert that the USERS tablespace is running low on space. You decide to shrink some segments. Which option would you use to determine which segments to shrink?（）
    A

    Segment Advisor 

    B

    SQL Tuning Advisor 

    C

    SQL Access Advisor 

    D

    Segment Resource Estimation 

    E

    Automatic Database Diagnostic Monitor (ADDM)


    正确答案： A
    解析： 暂无解析

  • 第19题：

    单选题
    You are maintaining your OLTP database in Oracle10g. You are performing the Flashback Transaction Query to find the undo SQL statements that can be used to undo the changes made to the database in the specific time period. Which pseudocolumn will you use to perform the Flashback Transaction Query？（）
    A

     VERSIONS_STARTSCN

    B

     VERSIONS_STARTTIME

    C

     VERSIONS_XID

    D

     VERSIONS_OPERATION


    正确答案： A
    解析： 暂无解析

  • 第20题：

    多选题
    You lost the index tablespace in your database. You decided to re-create the index tablespace and the indexes in the tablespace. What methods can you use to re-create the indexes？（）
    A

    SQL scripts

    B

    Recovery Manager （RMAN） script

    C

    Data Pump

    D

    SQL*Loader

    E

    Flashback database


    正确答案： C,B
    解析： 暂无解析

  • 第21题：

    单选题
    You are maintaining the SALES database for eSoft Corporation. You have not configured ASMM on the database. You want to know what size of the SGA will provide the best performance.  Which advisor would you use to determine the suitable size of the SGA？（）
    A

     SQL Tuning Advisor

    B

     Undo Advisor

    C

     ADDM

    D

     Memory Advisor


    正确答案： C
    解析： 暂无解析

  • 第22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23题：

    多选题
    You noticed that the index tablespace in your database requires a recovery. However， instead of performing a media recovery， you decided to re-create the indexes in a new tablespace. Which two options would you use to reduce the time it takes to re-create the indexes？（）
    A

    ONLINE

    B

    REVERSE

    C

    PARALLEL

    D

    COMPRESS

    E

    NOLOGGING

    F

    COMPUTE STATISTICS


    正确答案： D,B
    解析： 暂无解析

相关内容