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Par2: TPS file error 530: TPS File corruption 2005-08-05 -- Sean Stockbridge I have had big problems with TPS file corruptions recently, for no
apparently reason. I have finally got to the cause and thought it maybe
something you might like to add to your FAQs.
For the last 2 years we've had occasional TPS file error 530 on some of the
files used by our webapps on a Windows 2000 based network containing 4
servers.
The corruption has got a lot more frequent since I updated our forum section
recently, adding to the frequency of updates of one of the files. I've been
through all my code and could find nothing wrong and no explanation for it.
Out of sheer desparation, I gave up looking at my program and started
looking around Microsoft site and found a very interesting document which I
think perhaps you should be aware of in case someone else suffers the same
problem. http://support.microsoft.com/kb/q148367
When using a file via a file share, if the file is updated by several
people, such that the file doesn't change it's size and the file is updated
more than once in a 2 second period, Windows caching VREDIR serves the
requests from cache and not from the file on disk. This is what has been
corrupting some of our database files.
The corruptions magically stop when you add the following registry entry :-
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\VxD\VREDIR
Value Name: DiscardCacheOnOpen
Value: 01 00 00 00
This registry entry is not set up by Windows during install.
Today is April 24, 2024, 8:44 pm This article has been viewed 35115 times.
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