You notice a performance change in your production Oracle database and you want to know which change has made this performance difference.You generate the Compare Period Automatic Database Diagnostic Monitor (ADDM) report to further investigation.Which th

题目

You notice a performance change in your production Oracle database and you want to know which change has made this performance difference.You generate the Compare Period Automatic Database Diagnostic Monitor (ADDM) report to further investigation.Which three findings would you get from the report?（）

A. It detects any configuration change that caused a performance difference in both time periods.

B. It identifies any workload change that caused a performance difference in both time periods.

C. It detects the top wait events causing performance degradation.

D. It shows the resource usage for CPU, memory, and I/O in both time periods.

E. It shows the difference in the size of memory pools in both time periods.

F. It gives information about statistics collection in both time periods.

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  • 第1题：

    What's ( )job? Are ( ) British?

    A. your, your

    B. you, your

    C. your, you


    正确答案：C

  • 第2题：

    YouareaDatabaseAdministratorwithWonderWeb.You&en

    YouareaDatabaseAdministratorwithWonderWeb.YouuseapasswordfiletoestablishconnectionstotheSalesdatabaselocatedontheserver.Youcreatedthepasswordfileusingthefollowingcommand：

    ORAPWDfile=d：\oracle\ora9i\orapwU01password=adminentries=4

    Youerroneouslydeletedthepasswordfilewhilethedatabasewasrunning.Youre-createthepasswordfileusingthefollowingcommand：

    ORAPWDfile=d：\oracle\ora9i\orapwU01password=change_on_installentries=4

    However，whenyoutrytoconnectastheSYSuser，youreceivethefollowingerror：

    ORA-01031：insufficientprivileges

    Whatshouldyoudotoresolvethiserror？（）


    参考答案：D

  • 第3题：

    （ ） – Is Miss White __________ English teacher, Maria?

    – No, she teaches __________ geography.

    A．your；my

    B．you；mine

    C．you；us

    D．your；us


    正确答案：D

  • 第4题：

    Merry Christmas, George! Here is a card for ________, with ________ best withes.

    A.you…your

    B.you…our

    C.us…our

    D.us…your


    参考答案：B

  • 第5题：

    – David, you've been losing your temper over nothing lately.– ( ).

    A. I haven’t been getting much sleep either

    B. You’d better not push yourself too hard, or you’ll get sick

    C. I’m sorry. I shouldn’t have blown up like that

    D. You’d better do exercises regularly


    正确答案:C

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    你最好控制一下上网聊天的时间。（汉译英）

    A．You'd better set a limit for your online chat time.

    B．You'd better set a limit on your online chat time.

    C．You'd better set a limit on your online chatting time.

    D．You'd better set a limit for your online chatting time.


    You'd better set a limit on your online chatting time.

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