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    Index deleted ....

    I have an index that gets deleted ever so often .... I know that Alpha might delete an index if the expression to evaluate is bad in some way .... I also understand that if alpha sees an index with the same expression, it will delete one (is this true?) ....

    my question is, I have 2 index definitions that have the same expression (field) with 2 different names, one is unique key and one is not .. it seems that alpha is deleting my explicit one which is not defined with unique and keeping the automatically generated one which is Unique. Can someone confirm that this is normal behavior for Alpha .... I originally thought if anything in the definitions was different Alpha would not look at as duplicate and leave alone ... I think I was wrong .. :)

    Thanks in advance

    Glenn

    #2
    Re: Index deleted ....

    Please post the index definition and filter.

    When does the index disappear? After an operation, or something coded, or overnight?

    There is usually a reason that an index disappears.
    Al Buchholz
    Bookwood Systems, LTD
    Weekly QReportBuilder Webinars Thursday 1 pm CST

    Occam's Razor - KISS
    Normalize till it hurts - De-normalize till it works.
    Advice offered and questions asked in the spirit of learning how to fish is better than someone giving you a fish.
    When we triage a problem it is much easier to read sample systems than to read a mind.
    "Make it as simple as possible, but not simpler."
    Albert Einstein

    http://www.iadn.com/images/media/iadn_member.png

    Comment


      #3
      Re: Index deleted ....

      Image_50.jpg

      nightly job that goes though all properties (4) ....

      and yes i agree there is usually a reason ... I think its because i have an index that has a duplicate expression .... alphas index wins out ....
      trying to verify this through this board.

      1st index is "Property1" .. alpha makes this to support a set
      2nd index is U_Property .. I created this

      Only difference is one is bound by unique key and one is not

      Comment


        #4
        Re: Index deleted ....

        Originally posted by peterg000 View Post
        [ATTACH=CONFIG]42112[/ATTACH]

        nightly job that goes though all properties (4) ....

        and yes i agree there is usually a reason ... I think its because i have an index that has a duplicate expression .... alphas index wins out ....
        trying to verify this through this board.

        1st index is "Property1" .. alpha makes this to support a set
        2nd index is U_Property .. I created this

        Only difference is one is bound by unique key and one is not
        What does the nighty process do?
        Al Buchholz
        Bookwood Systems, LTD
        Weekly QReportBuilder Webinars Thursday 1 pm CST

        Occam's Razor - KISS
        Normalize till it hurts - De-normalize till it works.
        Advice offered and questions asked in the spirit of learning how to fish is better than someone giving you a fish.
        When we triage a problem it is much easier to read sample systems than to read a mind.
        "Make it as simple as possible, but not simpler."
        Albert Einstein

        http://www.iadn.com/images/media/iadn_member.png

        Comment


          #5
          Re: Index deleted ....

          Originally posted by Al Buchholz View Post
          What does the nighty process do?
          Al ... it is just used to run through all the properties in a loop and then generate balances for all users in that property. There may be some lookup()s used throughout to get some info about the property. And I dont even know if that script is what causes the index to be removed. It just so happened yesterday i put some code in the startup for the app to check for the index and if not there, add it back in and log the event .... noticed it this morning when I checked my log. The only thing that ran over the night was the job I am describing ... that's the only reason i am even pointing that way.

          I guess I was just hoping someone would verify whether Alpha gets rid of indexes that seem to be duplicates (duplicate order expressions) .... do you know if this is true?

          I would try and test, but don't know how to trigger Alpha into checking the indexes and deciding which ones to get rid of????

          Thanks for any and all help Al ....

          Glenn

          Comment


            #6
            Re: Index deleted ....

            http://www.aimsdc.net/Tips_Funcs/AIMS_Index_Rebuild.htm

            Many people use this in a production environment.
            Al Buchholz
            Bookwood Systems, LTD
            Weekly QReportBuilder Webinars Thursday 1 pm CST

            Occam's Razor - KISS
            Normalize till it hurts - De-normalize till it works.
            Advice offered and questions asked in the spirit of learning how to fish is better than someone giving you a fish.
            When we triage a problem it is much easier to read sample systems than to read a mind.
            "Make it as simple as possible, but not simpler."
            Albert Einstein

            http://www.iadn.com/images/media/iadn_member.png

            Comment


              #7
              Re: Index deleted ....

              Originally posted by Al Buchholz View Post
              http://www.aimsdc.net/Tips_Funcs/AIMS_Index_Rebuild.htm

              Many people use this in a production environment.
              Al ..... yes, I read about it in many post. I was just trying to understand how Alpha was working. Still very curious to know officially how Alpha determines when to get rid of an index. Im going to see if I can set up a controlled test ... will report back.

              Thanks again ...

              Glenn

              Comment

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