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What can corrupt a DBC or a DBF
Message
De
27/07/2000 17:40:56
 
 
À
27/07/2000 14:44:43
Jerry Tovar
Dana Corporation Dana It
Maumee, Ohio, États-Unis
Information générale
Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Divers
Thread ID:
00397789
Message ID:
00397915
Vues:
14
>I have a user that is running a VFP6 application. Twice now he corrupted his DBC file. If I USE mydbc.dbc and BROWSE, I see that a bunch of garbage records were appended to the DBC and the DBC lost most of it's connections to it's tables.
>
>I had to FREE TABLE on all his tables and ADD TABLES and redo the views.
>
>What can cause a DBF or a DBC to get corrupted? Abnormal shutdowns like a power outage or re-booting without quiting out of the app?
>

Those are the obvious ways; terminating VFP through Task Manager, and I've seen it when someone turned on power-saving features that turned off the hard drive after some period of inactivity. A screen saver that blanks the screen and shows no activity, or a monitor that shuts off after some idle period, is an open invitation to accidental powerdowns. Use of outdated disk utilities; I recently had to deal with a user who ran a DOS version of Norton utilities on a Win95 system, which completely trashed the directories since it mishandled long file names in directories - thankfully they didn't do anything with the defrag program, which didn't understand drives larger than 32MB...

>This happened to him twice now. All other users have no problems like this.
>
>Thanks,
>
>Jerryt
EMail: EdR@edrauh.com
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