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REBUILD A CORRUPT DBF FILE

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  • REBUILD A CORRUPT DBF FILE

    Hi Evereyone,
    Is there a function or an idea that I can use to fix a corrupt DBF file in A4 V7 Full version and Runtime. I have a client running an application with A4 V7 Runtime & one particular DBF file will not open and we cannot even extract the data in it using the APPEND utility - A4 reports that the DBF file is corrupt and cannot read from it. Any help will be greatly appreciated. Thanks in Adavnace.

    Rawlings

  • #2
    RE: REBUILD A CORRUPT DBF FILE

    You can try to open it with excel or access, they are sometimes forgiving of problems. Other times more demanding. Another option is to get a dbase utility like dsalvage. Search on google or yahoo to find what is available.

    http://www.dsalvage.com/
    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

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    • #3
      RE: REBUILD A CORRUPT DBF FILE

      Did you see my request in Corrupt file. We used to be able to put in the information prior to the corrupt file and the system would work. That was before we upgraded computers to XP Pro. I am working on that problem at the office today.

      Comment


      • #4
        RE: REBUILD A CORRUPT DBF FILE

        Thanks guys for your help & tips. It's nice to have people on this forum with the know how.

        Rawlings

        Comment


        • #5
          RE: REBUILD A CORRUPT DBF FILE

          Let us know how you fixed it.
          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


          • #6
            RE: REBUILD A CORRUPT DBF FILE

            We had the problem come up this past week again in another one of our files. We look for the last record, then put in a record number past that file and it worked. Example: Record No. 249 okay but record 250 corrupt, then just enter data and set the new record at 252 or 253. Ignore the fact that the system says corrupt and enter the file anyway. If you can just pack the records so that the corrupt file gets deleted and packed. Another time we just copied the database and gave it a new name. It worked.

            Comment


            • #7
              Re: REBUILD A CORRUPT DBF FILE

              Originally posted by Jan Schiltz View Post
              We had the problem come up this past week again in another one of our files. We look for the last record, then put in a record number past that file and it worked. Example: Record No. 249 okay but record 250 corrupt, then just enter data and set the new record at 252 or 253. Ignore the fact that the system says corrupt and enter the file anyway. If you can just pack the records so that the corrupt file gets deleted and packed. Another time we just copied the database and gave it a new name. It worked.
              Jan,

              I would try to find out what is causing this. There may come a time where it's not recoverable. It sounds like the EOF pointer (End of File) is the culprit.

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              • #8
                Re: REBUILD A CORRUPT DBF FILE

                Originally posted by Jan Schiltz View Post
                ... Another time we just copied the database and gave it a new name. It worked.
                Copying usually solves this problem. Say test.dbf is non functional due to corrupt dbf. What you do is just copy test to test1.dbf, then zap original and append all records from test1.dbf. Of course, while copying, alpha will complain, but it will copy all records except the last one. Hope it helps.

                Comment


                • #9
                  Re: REBUILD A CORRUPT DBF FILE

                  Originally posted by Rawlings View Post
                  Hi Evereyone,
                  Is there a function or an idea that I can use to fix a corrupt DBF file in A4 V7 Full version and Runtime. I have a client running an application with A4 V7 Runtime & one particular DBF file will not open and we cannot even extract the data in it using the APPEND utility - A4 reports that the DBF file is corrupt and cannot read from it. Any help will be greatly appreciated. Thanks in Adavnace.

                  Rawlings
                  ANSWER - how to fix corrupt databases in one minute.

                  It is not necessary to rebuild a corrupt database. All corrupt databases can fixed in less than one minute.

                  The solution is :

                  Open database to main screen

                  Copy the database but only one record(just pick a not recent record number at random; include "all", I usually name this database "FixMMDD" (( month Day))

                  Open original database to mainscreen and append the FIXMMDD.dbf.

                  You're done.

                  Occassionally you may have to update indexes. Very rarely are any records lost and when it happens those few records are clearly garbled.

                  I've been doing this for three years with no problems.

                  If you have fields that increment you'll have to adjust that for your last valid value.

                  Bolyn McClung
                  Charlotte, NC

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