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Bonus TIPS for Successful Posting

Try a Search First
It is highly recommended that a Search be done on your topic before posting, as many questions have been answered in prior posts. As with any search engine, the shorter the search term, the more "hits" will be returned, but the more specific the search term is, the greater the relevance of those "hits". Searching for "table" might well return every message on the board while "tablesum" would greatly restrict the number of messages returned.

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LOSING RECORDS

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    #1

    LOSING RECORDS

    Users have periodically complained of missing records. I've shrugged it off as user error until now. I have 2 tables where I have backup copies from different dates and there are records missing from the more current copy. What can be done to try and retrieve the data if anything? Also, if there are deleted records can they be restored? And lastly, why and how does this happen?
    Tags: None
    #2
    RE: LOSING RECORDS

    Russ,

    Determining the cause for the unexpectedly missing (deleted) records requires careful troubleshooting and detective work. This can be very time consuming. Maybe you can figure out the pattern by comparing the two backup versions you have. Here's an example where referential integrity caused records to disappear unexpectely. If you're using referential integrity enabled in your set designs perhaps this pertains to you, too.

    http://www.learn alpha.com/DisappearingRecords/DisappearingRecords.htm

    You should also try searching this forum for other threads on Referential Integrity or for Lost Records or for Disappearing Records.

    Recovering deleted records is possible until the table is packed. In vers 4 of Alpha Five this requires a script to undelete them. This has been discussed and illustrated on other occasions... search this forum, and also www.learn alpha.com for details. Be forewarned... an effort to recover deleted records will recover them all... even the ones you really intended to delete on purpose so you can very quickly create a nightmarish tangle of your table. Approach this with great care, and maintain reliable backups at each point along the way.

    -- tom

    Comment

      #3
      RE: LOSING RECORDS

      I don't want you to think that I know very much about A5 but as you might read in my recent post I had a problem with a table not showing records--AT ALL!

      Try this (I'd be interested in your results. Set up an operation that 'Copies' the particular table you are missing data. Then inspect that table for your missing data. Never mind the set at this point.

      If you do not find your data there, try opeing the respective .dbf in a word processor. Word seemed to work for me but your mileage may vary. I was still in the developement stage when I did this with only a 12 record payload. If you have more, finding you particular data would be difficult. Using the search function in Word or your processor will be helpful. If you find your data in there then that file is corrupt somehow. You don't say how many records you have in your table or how many are missing.

      If you find your missing data in there, I admit I don't know how you would recover it, but I'd (we'd) like to know what you find.

      Comment

        #4
        RE: LOSING RECORDS

        have the indexes been rebuilt?

        Comment

          #5
          RE: LOSING RECORDS

          You can also open a .dbf in excel with the benefit that the fields all line up nicely in columns with field names as column headers.

          If you find the data this way you can save the .dbf as an .xls file and then import it.
          There can be only one.

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