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Corrupt DBF

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  • Corrupt DBF

    I have an odd situation. My dbf was corrupted Friday afternoon. I have a backup from Thursday evening which I have restored. However, the memo file was NOT corrupted but does not work with the backup of the dbf (some of the text does not match since records were added to the dbf). Is there anyway to extract the info that was added to the FTP file or figure out what records were added to the dbf?

  • #2
    Re: Corrupt DBF

    If you haven't backed up the memo together with the dbf, pretty near impossible.
    The best I've got in that situation was (no guarantee)
    A. get the most recent copy made of both together.
    B. in the recovered dbf remove the memo field, delete the memo table.
    C. Recreate the memo - it now will be empty.
    D. Write code (or possibly an update procedure may work (that I've never tried)) and write the available memos from the previous into the new one

    On two occasions I did that for a client who just backs up dbfs - the first time, the above steps worked.
    The last time the memo data was corrupted after recovery.
    Make copies of every thing. They had to manually retype it all from an old backup.
    Maybe Alpha has utility that I have not discovered.

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    • #3
      Re: Corrupt DBF

      There is a memo fix utility, but usually does not work great.
      I will see if I can find it.

      As and aside, every memo file corruption I have found is where a table was copied and the memo file was from somewhere else. In other words they always need to be backed up or copied together.
      In documentation: <TBL>.MEMO_CHECK()

      The <TBL>.MEMO_CHECK() method checks the integrity of memo fields and
      repairs them.
      Supported By
      Alpha Five Version 6 and Above
      Dave Mason
      [email protected]
      Skype is dave.mason46

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      • #4
        Re: Corrupt DBF

        if you don't transfer the memo and dbf together the memo will almost immediately corrupt. thats why it has always been a best practice to have the memo in a separate table with only 2 fields - the linking key for the set, and the memo field.
        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

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