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Oh Where, Oh Where have my indexes gone?

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    #1

    Oh Where, Oh Where have my indexes gone?

    When right clicking the table name and selecting Define Indexes, there are no indexes. Yet, when I checked the folder, the index file is there.

    Que Pasa?? Updating indexes does not help. I copied the CDX file from the backup and again, it appears in the folder but no in the table. Database compound does not help either.

    Thank you for the suggestions.

    kenn
    TYVM :) kenn

    Knowing what you can achieve will not become reality until you imagine and explore.
    Tags: None
    #2
    Re: Oh Where, Oh Where have my indexes gone?

    Please, do not "compound" your database,... compact it instead! "Compounding" the database might "compound" your problems!

    The disappearing indexes (indices) is a subject that has been covered in compounding details in the past in many threads which I encourage you to read but in a nutshell and whether you agree with this draconian policy or not, if an index is corrupt for any reason alpha does not take hostages. It will kill the darn index.
    So, the question becomes what corrupts indices, besides booze, liquor and dope?
    Many things, most commonly if the index is based on a variable, a lousy expression, a bad filter and or order etc.

    Comment

      #3
      Re: Oh Where, Oh Where have my indexes gone?

      Kenn, are any of the index names longer than 10 chars? You may have corrupted dictionaries, since the long index names will be stored there and may be inaccessible to Alpha. The general recommendation is to never use index names longer than 10 characters.

      Comment

        #4
        Re: Oh Where, Oh Where have my indexes gone?

        While it may not do you any good in this circumstance.....

        Check out Cal Locklin's Index Rebuild Utiity. It saves a definition of all of your indices in a function and will rebuild them "from scratch". It is a GREAT utility.

        Regards,

        JK

        Comment

          #5
          Re: Oh Where, Oh Where have my indexes gone?

          Originally posted by Tom Cone Jr View Post
          Kenn, are any of the index names longer than 10 chars? You may have corrupted dictionaries, since the long index names will be stored there and may be inaccessible to Alpha. The general recommendation is to never use index names longer than 10 characters.
          Hi Tom,

          Most are not but a couple are 12 characters. The most complex is field1 + Field2. There are no variables or any other concoctions. The fact that 2 indexes are more than 10 characters, that sould only cause a problem with the particular index.

          I have 2 versions of the app, a working version (w/v) and a development version (d/v). The indexes in the w/v work fine. It's the d/v that appears to be corrupt but I hav eno idea how or where the problem lies. The question is, what is it that is causing the indexes to not show in the table (parent table)?

          I also know there are tons of index posts and searching the message board is extremely time consuming. I tried googling "indexes disappear alpha five" but found nothing recent or close to my situation.

          Thanks for the suggestions

          p.s. Gabe, Sorry about 'compound', I meant 'compact'.

          kenn
          TYVM :) kenn

          Knowing what you can achieve will not become reality until you imagine and explore.

          Comment

            #6
            Re: Oh Where, Oh Where have my indexes gone?

            Kenn:
            I think, given the fact that there were quite a bit of questions about indexes, the help file added a page in reference to that. And I knew you meant compact.

            See this.

            Comment

              #7
              Re: Oh Where, Oh Where have my indexes gone?

              Ken,
              When right clicking the table name and selecting Define Indexes, there are no indexes. Yet, when I checked the folder, the index file is there.
              having an index file just means that once upon a time you maybe had an index present....if they went "south" the file would still be there.

              I copied the CDX file from the backup and again, it appears in the folder but no in the table
              Yeah, but did you then right click in whitespace while on the Tables/Sets tab and add the table in question back again??? (or use xbasic to do the same). Alpha won't see the new file (table) unless this is done in many instances. Something else to try at least.
              Mike
              __________________________________________
              It is only when we forget all our learning that we begin to know.
              It's not what you look at that matters, it's what you see.
              Henry David Thoreau
              __________________________________________



              Comment

                #8
                Re: Oh Where, Oh Where have my indexes gone?

                Personally, I recommend either using Cal's autoindex create/rebuild or do a roll your own

                In my own use, the most common cause for losing an index is sending a query that cannot be resolved by Alpha.

                I usually do an auto rebuild everyday, either when the first user logs on for the day, or in a maintenance program run at night from task manager

                another thing that happens is the index name is changed, and the rebuild rebuilds all indexes from scratch

                I've been using Cal's for maybe 6 years at a hospital that runs 24/7. I do an auto run at every shift change (3 times every 24 hours)
                Cole Custom Programming - Terrell, Texas
                972 524 8714
                [email protected]

                ____________________
                "A young man who is not liberal has no heart, but an old man who is not conservative has no mind." GB Shaw

                Comment

                  #9
                  Re: Oh Where, Oh Where have my indexes gone?

                  Originally posted by martinwcole View Post
                  Personally, I recommend either using Cal's autoindex create/rebuild or do a roll your own

                  In my own use, the most common cause for losing an index is sending a query that cannot be resolved by Alpha.

                  I usually do an auto rebuild everyday, either when the first user logs on for the day, or in a maintenance program run at night from task manager

                  another thing that happens is the index name is changed, and the rebuild rebuilds all indexes from scratch

                  I've been using Cal's for maybe 6 years at a hospital that runs 24/7. I do an auto run at every shift change (3 times every 24 hours)
                  Hi Martin,

                  Thank you for your comments/ I will look up Cal's Autoindex.

                  And to Mike,

                  Originally posted by MikeC View Post
                  Yeah, but did you then right click in whitespace while on the Tables/Sets tab and add the table in question back again??? (or use xbasic to do the same). Alpha won't see the new file (table) unless this is done in many instances. Something else to try at least.
                  I didn't know that had to be done. No doubt that is my problem.

                  Thanks.

                  Last but not least, to Gabe,

                  Thank you for the link. Some interesting information.

                  kenn
                  TYVM :) kenn

                  Knowing what you can achieve will not become reality until you imagine and explore.

                  Comment

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