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Read past end of file - corrupted index??

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    Read past end of file - corrupted index??

    I have a table that has been used for years. No problems on a stand alone machine, but when used on a network, will happen every day or two, get corrupted indexes, read past end of file. I can recompact, sometimes have to reboot, and then recompact, and then it works again. What are the major things to look for in trying to figure out what is causing this problem?

    Gary Traub
    Gary S. Traub, Ph.D.


    #2
    Good question. I'll be interested to see what others think. For me I'd look at these:

    a) if you're using an operating system that enables opportunistic locking, I'd disable it. This applies to XP and other systems. Check the help file.

    b) in the design do you follow the guidelines recommended by Dr. Wayne in his article "Memos and Browses that work"? i.e. (1) user navigation through any table is permitted only when tables are in read only mode, when editing is permitted navigation is turned off; and (2) new memo fields are created using xbasic, users then edit the memo field in change mode using a form that does not permit navigation off the record.

    -- tom

    Comment


      #3
      Thanks Tom, I will look into your suggestions.
      Gary S. Traub, Ph.D.

      Comment


        #4
        Re: Read past end of file - corrupted index??

        Tom,

        I had an rtf memo field in the table that was never used for any real purpose. I changed it to a text field. So far, my office has not reported any problems. Will let you know if this fixed the issue. Does this sound like it might have been the problem?

        Gary
        Gary S. Traub, Ph.D.

        Comment


          #5
          Re: Read past end of file - corrupted index??

          Sorry. Can't say. I don't have much experience with RTF memo fields. You might try searching for related threads discussing difficulties with them. -- tom

          Comment


            #6
            Re: Read past end of file - corrupted index??

            I just wanted to post this update: Ever since, I eliminated the rtf memo field from the table, there has been absolutely no problem with "end of file" messages. It appears that the problem is solved. Thanks for the help!!

            Gary Traub
            Gary S. Traub, Ph.D.

            Comment


              #7
              Re: Read past end of file - corrupted index??

              Sounds like the memo field was corrupted. Not a problem unique to rtf memos as opposed to regular memo fields.One of the reasons I use them both very stingently

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