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Memo file is missing
Message
From
23/09/2009 02:35:45
Lutz Scheffler
Lutz Scheffler Software Ingenieurbüro
Dresden, Germany
 
 
To
22/09/2009 08:42:04
General information
Forum:
Visual FoxPro
Category:
Databases,Tables, Views, Indexing and SQL syntax
Environment versions
Visual FoxPro:
VFP 9 SP2
OS:
Vista
Network:
Windows 2003 Server
Database:
Visual FoxPro
Application:
Desktop
Miscellaneous
Thread ID:
01425556
Message ID:
01425707
Views:
35
>>Using memos in my apps (not realy much) and for develpment (huge) not a single one in over 10 years.
>>
>>What causes memo corruption? I see not much more then instable hardware including powersupply. But this could kill relationships as well.
>
>
>So, when the corruption occurs, to restore the indexes I think that you run your reindexer procedure... to restore the link to FTP files do you edit the DBF header ?

If I would be realy in need of I would use a hexeditor to manipulate the DBF. The problems with memos are more that a write - error occurs and that the dbf - ftp runs out of sync. This is harder to fix. I never run into this so I never have done.

My point is that the memo problem is overvalued. Lets asume the VFP engine works perfect for the problem. All the stuff that cause a memo file to go out of sync will do the same thing to a cdx file. It might even bring the dbf itself out of sync. A dbf has a lenght information, and if something failed the wrong moment, file length does not fit to the lenght info.

The only problem with a corrupted file I ever had in VFP was a DBF with a corrupted lenght.

Agnes
Words are given to man to enable him to conceal his true feelings.
Charles Maurice de Talleyrand-Périgord

Weeks of programming can save you hours of planning.

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