Opportunistic locking has been shut off on the NAS for years.

We just shut off SMB2 on the new Win 7 workstations.   

We also went around and shut off oplocs on all the XP clients too.  

That's made a big difference in the number of corruptions, but still one a week 
or so

The only corrupt tags I've seen have been on the tags used for the browse 
screens.   

I purchased a utility to quickly shut off the oplocks on the workstations 
rather that futzing with the registry on each one.   I was speaking to the tech 
support of the company who wrote the utility and he was ranting on how much 
Windows 7 has wreaked havoc on his companies support, with people getting all 
kinds of trouble with SMB2.   Is sounds like their product might be 
foxpro-based.  


________________________________
 From: Dave Crozier <[email protected]>
To: ProFox Email List <[email protected]> 
Sent: Tuesday, May 15, 2012 6:30 AM
Subject: RE: I have to be able to browse the whole database, but it causes 
corruption
 
Although not VFP (it relates to Dataflex/Informix files) this is still relevant 
to VFP tables.

http://www.dataaccess.com/whitepapers/opportunlockingreadcaching.html

Dave

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of 
Michael Madigan
Sent: 14 May 2012 17:55
To: Pro Fox Email List
Subject: I have to be able to browse the whole database, but it causes 
corruption

I have to be able to browse the whole database.  If I do it in vfp 9.0, it's 
been causing corruption.

If I use a SQL select, the largest subset a user would use is about 26,000 
records from 3 different tables, that takes about 30 seconds. .  

I was thinking of opening the database again with the noupdate clause, but will 
that guarantee me no corruption?   

Can you corrupt an index with a file opened noupdate?   

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