You have many users complaining about slow inserts into a large table. While investigating the reason， you find that the number of indexes on the table is high. You want to find out which indexes are not being used.  Which method would you follow to achi

题目

You have many users complaining about slow inserts into a large table. While investigating the reason， you find that the number of indexes on the table is high. You want to find out which indexes are not being used.  Which method would you follow to achieve this？（）

  • A、enable index monitoring and query the DBA_OBJECTS view
  • B、enable index monitoring and query the DBA_INDEXES view
  • C、enable index monitoring and query the V$OBJECT_USAGE view
  • D、enable index monitoring and view the DBA_INDEXTYPE_COMMENTS view
相似考题

1.If you had been with us , you ____our excitement.A. have understoodB. understoodC. will understandD. would have understood

2.Have you ever been to the place? You can see many places of interest there．（合并为一句）Have you ever been to the place ________you can see many places of interest?

3.When you learn a second language you have many difficulties to ________.A overcomeB confrontC conquestD triumph

4.You’d better have a rest. Let us do it, ________ you?A.doB.don’tC.willD.will not

更多“You have many us”相关问题

  • 第1题：

    ()you have said is very important to us.

    A、 What

    B、 That

    C、Whose


    参考答案：A

  • 第2题：

    Dear Mr Davis,

    We are glad to (1)()you that 100 cases of hand drills you shipped to Sydney on 1st July have arrived in (2)()condition. It shows that you have made great (3)()in packing.

    As for the hand drills to be shipped to us, we would like you to have them packed in boxes of 2 dozen each, 50 boxes to a (4)()case. We are certain that you will give special care to the packing in order to avoid any damage in the process of (5)().

    Please let us know by cable if you can meet our requirements.

    Regards,

    Emily McPhee

    Sales Director


    正确答案：1、inform2、perfect3、improvement4、wooden5、transportation

  • 第3题：

    How many ________ do you want to have?

    A.child

    B.children

    C.childs

    D.childrens


    答案：B

  • 第4题：

    How many books do you have? I have ______ book .That's ______ English book.

    A、a,an

    B、a,one

    C、on,an

    D、one,one


    参考答案： A

  • 第5题：

    How many of us（ ）,say,a meeting that is irrelevant to us would be interested in the discussion?

    A.attended
    B.attending
    C.to attend
    D.have attended

    答案：C
    解析：
    该题考查句子结构。其中该句主干为How many of us would be...discussion,say为插入语,相当于for example,而us与attend之间是主动关系，所以选B做us的后置定语，C表示将来。

  • 第6题：

    Do you have an account with us? Yes,（）

    Aplease.

    Bthe account is wrong

    Cwhat do you mean?  

    Dthe account number is .


    D
    略

  • 第7题：

    Your firm has been recommended to us by AMK company, （） we have done business for many years.

    • A、with whom
    • B、with who
    • C、whom
    • D、who

    正确答案:A

  • 第8题：

    What are two reasons to create synonyms?（）

    • A、You have too many tables.
    • B、Your tables are too long.
    • C、Your tables have difficult names.
    • D、You want to work on your own tables.
    • E、You want to use another schema's tables.
    • F、You have too many columns in your tables.

    正确答案:B,C

  • 第9题：

    All of your JSPs need to have a link that permits users to email the web master. This web application islicensed to many small businesses， each of which have a different email address for the web master. Youhave decided to use a context parameter that you specify in the deployment descriptor， like this： 42. 43.webmasterEmail 44.master@example.com 45. Which JSP code snippet creates this email link？（）

    • A、<a href=’mailto：${contextParam.webmasterEmail}’>contact us</a>
    • B、<a href=’mailto：${applicationScope.webmasterEmail}’>contact us</a>
    • C、<a href=’mailto：${contextInitParam.webmasterEmail}’>contact us</a>
    • D、<a href=’mailto：${initParam.webmasterEmail}’>contact us</a>

    正确答案:D

  • 第10题：

    单选题
    We have no steel wire．You had better（）us one.
    A

    borrow

    B

    lend

    C

    take

    D

    let


    正确答案： B
    解析： 暂无解析

  • 第11题：

    单选题
    （）you have said is very important to us.
    A

    What

    B

    That

    C

    Whose


    正确答案： A
    解析： 暂无解析

  • 第12题：

    单选题
    How many times have I told you（）football on the street?
    A

    do not play

    B

    not to have played

    C

    not to play

    D

    not your playing


    正确答案： D
    解析： 暂无解析

  • 第13题：

    If you have any questions here, please tell us. We' ll all be()to help you.

    A. ready

    B. already

    C. readiness


    参考答案：A

  • 第14题：

    You, like many of your classmates, probably have been in such a situation where you are asked to do something to help a foreign friend. (翻译)


    参考答案：像你的许多同学一样，你可能也曾有过亲身经历：有人请求你为外国友人帮忙做点事

  • 第15题：

    How many holds do you have?


    正确答案：We have 5 holds.

  • 第16题：

    A

    Dear Fang Pin，

    My brother and I are in the same school now． We have classes from Monday． tqFriday． on Saturday and Sunday， we don-t have any classes． We have many American friends now． We often play games together after school． They help us with our Eng-lish， and we teach them Chinese． They like China and want to go and have a look some day． On Sunday， we go to shops with mother． Father and mother sometimes take us to other places． American people are very friendly to us． How many English classes do you have every week? Do you like it?

    Please write to me soon．

    Yours，

    Zhao Hai

    ( )21． Zhao Hai and his family are in ________ now．

    A． the USA

    B． Australia

    C． Canada

    D．China


    正确答案：A
    21.A【解析】信中写到“我们现在有许多美国朋友”，且“美国人对我们很友好”，从这句可知．

  • 第17题：

    Your firm has been recommended to us by AMK company, （） we have done business for many years.

    Awith whom

    Bwith who

    Cwhom

    Dwho


    A
    略

  • 第18题：

    Will you go on a picnic with us tomorrow?（）

    AYes, but I‘ll have English classes

    BSorry. I have an appointment with Dr. Brown

    CI‘m afraid I have no idea

    DI won‘t. it‘s kind of you


    B
    略

  • 第19题：

    Do you have an account with us? Yes,（）

    • A、please.
    • B、the account is wrong
    • C、what do you mean?  
    • D、the account number is .

    正确答案:D

  • 第20题：

    How（）do you have?

    • A、many baggage
    • B、much baggages
    • C、many baggages
    • D、much baggage

    正确答案:D

  • 第21题：

    单选题
    All of your JSPs need to have a link that permits users to email the web master. This web application islicensed to many small businesses， each of which have a different email address for the web master. Youhave decided to use a context parameter that you specify in the deployment descriptor， like this： 42. 43.webmasterEmail 44.master@example.com 45. Which JSP code snippet creates this email link？（）
    A

    <a href=’mailto：${contextParam.webmasterEmail}’>contact us</a>

    B

    <a href=’mailto：${applicationScope.webmasterEmail}’>contact us</a>

    C

    <a href=’mailto：${contextInitParam.webmasterEmail}’>contact us</a>

    D

    <a href=’mailto：${initParam.webmasterEmail}’>contact us</a>


    正确答案： D
    解析： 暂无解析

  • 第22题：

    单选题
    You have delayed in dispatching us the shipping（）after shipment.
    A

    advice

    B

    instruction

    C

    information

    D

    data


    正确答案： C
    解析： 暂无解析

  • 第23题：

    单选题
    I hope, when you have finished this exercise, you _____ many mistakes in it.
    A

    won’t make

    B

    won’t have made

    C

    won’t be making

    D

    won’t have been making


    正确答案： B
    解析：
    句意：我希望你在做完这个练习时不会出现太多的错误。本题从句的时态是现在完成时，结合句意判断，主句的动作应在从句表达的动作结束前完成，只有B项的将来完成时较恰当。D项将来完成进行时，表示这个动作还要继续下去，与题意不符。

  • 第24题：

    单选题
    Will you go on a picnic with us tomorrow?（）
    A

    Yes, but I‘ll have English classes

    B

    Sorry. I have an appointment with Dr. Brown

    C

    I‘m afraid I have no idea

    D

    I won‘t. it‘s kind of you


    正确答案： A
    解析： 暂无解析

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