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How does UNC I/O really work?
Message
General information
Forum:
Visual FoxPro
Category:
Other
Miscellaneous
Thread ID:
00749159
Message ID:
00749216
Views:
18
>Using a utility called Filemon, which "monitors and displays all file
>system
activity on a system", I tried something simple. On a machine
>with a specific table on it I fired it up and set its monitoring in motion.
>Then, on another machine, I started the same utility but told it to monitor
>only activity for a specific file name. Once that was done I started VFP and
>did a USE to the specific table on the other machine, using a UNC path to do
>so. The table opened as expected. Then I executed a SET ORDER TO followed by
>a SEEK, then a BROWSE.
>I was surprised by the Filemon results obtained.
>The log on the system where I executed the commands showed all kinds of file
>I/O activity. The log on the system where the file resided showed NO FILE
>ACTIVITY of any kind!?!?

Is it possible that you had a filter set that screened out the process that was doing the file access? I know that if you're using Filemon on the VFP machine and the data server, VFP does not show up as accessing the tables, since it's the redirector (or some similar process) that's doing the actual access.
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