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单选题You are attempting to increase the checkpoint interval on your database. Each of the following choices will affect the duration and/or frequency of checkpoints, except one.  Which is it?（）A Size of redo logs B Number of datafiles C LOG_CHECKPOINT_INTER

题目
单选题
You are attempting to increase the checkpoint interval on your database. Each of the following choices will affect the duration and/or frequency of checkpoints, except one.  Which is it?（）
A

Size of redo logs 

B

Number of datafiles 

C

LOG_CHECKPOINT_INTERVAL 

D

LOG_CHECKPOINT_TIMEOUT

相似考题

1.You are analyzing the components of the redo log mechanisms in your Oracle database. Which of the following purposes does the CKPT process serve?（）A、Writes buffers to disk B、Writes current redo log number to datafile headers C、Writes redo log information to disk D、Reads information into memory for users

2. You work as a database administrator for Certkiller .com. Users in the Certkiller PROD database complain about the slow response when accessing the database. In the Active Session Waiting： Configuration page you find that the majority of the wait time is for the redo log buffer.Further investigation using the Run Queue graph and operating system tools reveals that the redo log files are on the same disks， and that the disk I/O for the redo log files is the reason for the performance degradation.  Which two actions would you take to gain performance？（）A、Increase the size of redo log filesB、Increase the size of redo log bufferC、Increase the number of redo log filesD、Place the redo log files on a separate diskE、Decrease the number of redo log groups to twoF、Increate the number Log Writer （LGWR） process

3.Why can setting too low a value for the FAST_START_MTTR_TARGET parameter reduce your overall database performance？（）A、Data blocks have to be written more frequently by DBWR. B、Redo blocks have to be written more frequently by LGWR. C、You need to substantially increase the size of your database buffer cache to hold the additional checkpoint records. D、You need to substantially increase the size of your redo buffer cache to hold the additional checkpoint records.

4.You can control instance recover performance by setting parameters to define targets for（）A、The size of the redo buffer in SGA. B、The instance that will perform recovery in Real Application Cluster database. C、The number of blocks to be read during instance recovery, or the time needed to complete instance recovery. D、The number of passes through the redo logs made by the recovery process to identify blocks needing recovery.

更多“单选题You are attempting to increase the checkpoint interval on your database. Each of the following choices will affect the duration and/or frequency of checkpoints, except one.  Which is it?（）A Size of redo logs B Number of datafiles C LOG_CHECKPOINT_INTER”相关问题

  • 第1题：

    You are adding redo logs to the Oracle database. Creating a new redo log adds information to which of the following Oracle resources? （）

    • A、Shared pool 
    • B、Control file 
    • C、SGA 
    • D、PGA

    正确答案:B

  • 第2题：

    You are maintaining your database in Oracle10g. You are not using the recovery catalog to maintain the backup information of your database. Which file can be used as a repository to store information regarding the RMAN backup？（）

    • A、 online redo log files
    • B、 alert log files
    • C、 control file
    • D、 datafiles associated with the SYSTEM tablespace

    正确答案:C

  • 第3题：

    Which three initialization parameters are no longer needed when FAST_START_MTTR_TARGET is defined？（）

    • A、TARGET_REDO_BLKS
    • B、FAST_START_IO_TARGET
    • C、LOG_CHECKPOINT_TIMEOUT
    • D、RECOVERY_ESTIMATED_IOS
    • E、LOG_FILE_SIZE_REDO_BLKS
    • F、LOG_CHECKPOINT_INTERVAL

    正确答案:B,C,F

  • 第4题：

    In your production database， you have observed that the database server performance degrades whenever there is a switch between the log groups. On further investigation， you find that the database is running in ARCHIVELOG mode and the archived log files are being written to the same disk that is used to store the redo log members.  Which two actions would you take to improve the performance of the database server？ （）

    • A、increase the size of the redo log buffer
    • B、increase the number of redo log groups
    • C、increase the number of log writer processes
    • D、increase the number of ARCn processes
    • E、change the appropriate LOG_ARCHIVE_DEST_n parameter to place the archived log files in a separate location

    正确答案:B,E

  • 第5题：

    You are working as a DBA on Oracle Database 9i. You plan to upgrade your 9i database to Oracle 10g. To be familiar with the new database technology， you decide to install Oracle Database 10g on your workstation at home. You create a general purpose database.   After the installation， you make the following changes in your initialization parameter file：LOG_ARCHIVE_DEST_1=’LOCATION=USE_DB_RECOVERY_FILE_DEST’   DB_RECOVERY_FILE_DEST =    ’LOCATION=d：/product/10.1.0/flash_recovery_area’  DB_RECOVERY_FILE_DEST_SIZE=10g   Where are the archived redo logs stored for your database？（）

    • A、 The archived redo logs are stored in an operating system-dependent location.
    • B、 The archived redo logs are stored in the location specified by LOG_ARCHIVE_DEST_1.
    • C、 The archived redo logs are stored in the location specified by DB_RECOVERY_FILE_DEST.
    • D、 The archived redo logs are stored in the locations specified by both LOG_ARCHIVE_DEST_1 and  DB_RECOVERY_FILE_DEST.

    正确答案:C

  • 第6题：

    If you wanted to find the name and location of your control files, you could find that information in each of the following locations except one. Which is it?（）

    • A、V_CONTROLFILE_RECORD_SECTION 
    • B、V_CONTROLFILE 
    • C、V$PARAMETER 
    • D、init.ora file

    正确答案:A

  • 第7题：

    单选题
    If you wanted to find the name and location of your control files, you could find that information in each of the following locations except one. Which is it?（）
    A

    V_CONTROLFILE_RECORD_SECTION 

    B

    V_CONTROLFILE 

    C

    V$PARAMETER 

    D

    init.ora file


    正确答案： B
    解析： 暂无解析

  • 第8题：

    单选题
    Which statement is true regarding checkpoints and recovery？（）
    A

    A checkpoint defines the highest system change number （SCN）.

    B

    All redo entries higher or at the SCN are known to be written to the data files.

    C

    Only the redo records containing SCNs higher then the checkpoint need to be applied during recovery.

    D

    The LOG_CHECKPOINT_INTERVAL initialization parameter specifies the amount of time between incremental checkpoints.


    正确答案： D
    解析： 暂无解析

  • 第9题：

    多选题
    You notice that the performance of the database has degraded because of frequent checkpoints.  Which twoactions resolve the issue（）
    A

    Disable automatic checkpoint tuning.

    B

    Check the size of the redo log file size and increase the size if it is small.

    C

    Set the FAST_START_MTTR_TARGET parameter as per the advice given by the MTTR Advisor.

    D

    Decrease the number of redo log members if there are more than one redo log members available in eachredo log group.


    正确答案： D,A
    解析： 暂无解析

  • 第10题：

    单选题
    You are using RMAN to backup your ARCHIVELOG mode database. You have enabled control-file autobackups. Which files are not backed up during the RMAN backup?（）
    A

    Database Datafiles 

    B

    Database Control Files 

    C

    Online redo logs

    D

    Archived redo logs 

    E

    The database SPFILE 

    F

    None of the above, all these files are backed up. 


    正确答案： D
    解析： 暂无解析

  • 第11题：

    单选题
    You are maintaining your database in Oracle10g. You have set the value of the STATISTICS_LEVEL initialization parameter to TYPICAL and the value of the FAST_START_MTTR_TARGET parameter to 900 seconds. To increase the performance of the database， you want to determine the optimal size of the online redo log files. Which tool enables you to determine the optimal size of the online redo log files？（）
    A

     Oracle Enterprise Manager

    B

     The V$LOG view

    C

     The V$LOGFILE view

    D

     The V$FLASHBACK_DATABASE_LOGS view


    正确答案： A
    解析： 暂无解析

  • 第12题：

    单选题
    You are working as a DBA on Oracle Database 9i. You plan to upgrade your 9i database to Oracle 10g. To be familiar with the new database technology， you decide to install Oracle Database 10g on your workstation at home. You create a general purpose database.   After the installation， you make the following changes in your initialization parameter file：LOG_ARCHIVE_DEST_1=’LOCATION=USE_DB_RECOVERY_FILE_DEST’   DB_RECOVERY_FILE_DEST =    ’LOCATION=d：/product/10.1.0/flash_recovery_area’  DB_RECOVERY_FILE_DEST_SIZE=10g   Where are the archived redo logs stored for your database？（）
    A

     The archived redo logs are stored in an operating system-dependent location.

    B

     The archived redo logs are stored in the location specified by LOG_ARCHIVE_DEST_1.

    C

     The archived redo logs are stored in the location specified by DB_RECOVERY_FILE_DEST.

    D

     The archived redo logs are stored in the locations specified by both LOG_ARCHIVE_DEST_1 and  DB_RECOVERY_FILE_DEST.


    正确答案： D
    解析： 暂无解析

  • 第13题：

    You notice that the performance of the database has degraded because of frequent checkpoints. Which two actions resolve the issue（）

    • A、Disable automatic checkpoint tuning.
    • B、Check the size of the redo log file size and increase the size if it is small.
    • C、Set the FAST_START_MTTR_TARGET parameter as per the advice given by the MTTR Advisor. 
    • D、Decrease the number of redo log members if there are more than one redo log members available in each redo log group.

    正确答案:B,C

  • 第14题：

    You notice that the performance of the database has degraded because of frequent checkpoints.  Which twoactions resolve the issue（）

    • A、Disable automatic checkpoint tuning.
    • B、Check the size of the redo log file size and increase the size if it is small.
    • C、Set the FAST_START_MTTR_TARGET parameter as per the advice given by the MTTR Advisor.
    • D、Decrease the number of redo log members if there are more than one redo log members available in eachredo log group.

    正确答案:B,C

  • 第15题：

    You are using RMAN to backup your ARCHIVELOG mode database. You have enabled control-file autobackups. Which files are not backed up during the RMAN backup?（）

    • A、Database Datafiles 
    • B、Database Control Files 
    • C、Online redo logs
    • D、Archived redo logs 
    • E、The database SPFILE 
    • F、None of the above, all these files are backed up. 

    正确答案:C

  • 第16题：

    You are attempting to increase the checkpoint interval on your database. Each of the following choices will affect the duration and/or frequency of checkpoints, except one.  Which is it?（）

    • A、Size of redo logs 
    • B、Number of datafiles 
    • C、LOG_CHECKPOINT_INTERVAL 
    • D、LOG_CHECKPOINT_TIMEOUT

    正确答案:B

  • 第17题：

    Your database performance has degraded due to frequent checkpointing. What would you do in this scenario？（）

    • A、make redo log files smaller
    • B、increase the size of the checkpoint file
    • C、make the changes as per the advice given by MTTR Advisor
    • D、make the changes as per the advice given by Checkpoint Advisor

    正确答案:C

  • 第18题：

    Which statement is true regarding checkpoints and recovery？（）

    • A、A checkpoint defines the highest system change number （SCN）.
    • B、All redo entries higher or at the SCN are known to be written to the data files.
    • C、Only the redo records containing SCNs higher then the checkpoint need to be applied during recovery.
    • D、The LOG_CHECKPOINT_INTERVAL initialization parameter specifies the amount of time between incremental checkpoints.

    正确答案:C

  • 第19题：

    多选题
    Which three initialization parameters are no longer needed when FAST_START_MTTR_TARGET is defined？（）
    A

    TARGET_REDO_BLKS

    B

    FAST_START_IO_TARGET

    C

    LOG_CHECKPOINT_TIMEOUT

    D

    RECOVERY_ESTIMATED_IOS

    E

    LOG_FILE_SIZE_REDO_BLKS

    F

    LOG_CHECKPOINT_INTERVAL


    正确答案： A,B
    解析： 暂无解析

  • 第20题：

    单选题
    You are adding redo logs to the Oracle database. Creating a new redo log adds information to which of the following Oracle resources? （）
    A

    Shared pool 

    B

    Control file 

    C

    SGA 

    D

    PGA


    正确答案： C
    解析： 暂无解析

  • 第21题：

    单选题
    You are maintaining your database in Oracle10g. You are not using the recovery catalog to maintain the backup information of your database. Which file can be used as a repository to store information regarding the RMAN backup？（）
    A

     online redo log files

    B

     alert log files

    C

     control file

    D

     datafiles associated with the SYSTEM tablespace


    正确答案： A
    解析： 暂无解析

  • 第22题：

    单选题
    You are analyzing the components of the redo log mechanisms in your Oracle database. Which of the following purposes does the CKPT process serve?（）
    A

    Writes buffers to disk 

    B

    Writes current redo log number to datafile headers 

    C

    Writes redo log information to disk 

    D

    Reads information into memory for users


    正确答案： A
    解析： 暂无解析

  • 第23题：

    单选题
    You are attempting to increase the checkpoint interval on your database. Each of the following choices will affect the duration and/or frequency of checkpoints, except one.  Which is it?（）
    A

    Size of redo logs 

    B

    Number of datafiles 

    C

    LOG_CHECKPOINT_INTERVAL 

    D

    LOG_CHECKPOINT_TIMEOUT


    正确答案： D
    解析： 暂无解析

  • 第24题：

    多选题
    You notice that the performance of the database has degraded because of frequent checkpoints. Which two actions resolve the issue（）
    A

    Disable automatic checkpoint tuning.

    B

    Check the size of the redo log file size and increase the size if it is small.

    C

    Set the FAST_START_MTTR_TARGET parameter as per the advice given by the MTTR Advisor.

    D

    Decrease the number of redo log members if there are more than one redo log members available in each redo log group.


    正确答案： A,B
    解析： 暂无解析

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