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Terminal Services TABLEUPDATE Failure
Message
De
01/09/2005 20:01:37
Neil Mc Donald
Cencom Systems P/L
The Sun, Australie
 
 
À
01/09/2005 07:29:14
Information générale
Forum:
Visual FoxPro
Catégorie:
Client/serveur
Versions des environnements
Visual FoxPro:
VFP 7 SP1
OS:
Windows XP SP2
Network:
Windows 2000 Server
Database:
Visual FoxPro
Divers
Thread ID:
01045421
Message ID:
01046072
Vues:
38
Hi,
VFP access is a lot faster with TS, i.e. a lot more chance of dup's being created.
Do you have a queueing mechanism for PK generation i.e. only one PK query and generation at the one time.
Also disable disk write caching on the TS, the disk and the cache can get out of sync.


>>Hi Ray,
>>
>>>I'm getting TABLEUPDATE() failures when two or more users simultaneously attempt to enter, then save, separate new client records
>>
>>What does AERROR() report as the reason the for the update failure? Are you generating duplicate keys?
>
>Possibly. This is a bear to debug because I have to do it at the client site via Terminal Services in a runtime-only evironment--and with another recruit coordinated via telephone to generate simultaneous entries. I'm using Doug Hennig's SFLOGGER class to output debug info to a text file. So...I just got last night my first AERROR information, and the error is, ta da, "uniqueness violated." It appears to be occuring in just one table of several that are updated with the addition of a new client. I'm investigating further....
>
>I still don't understand, however, why this would occur in a TS session but not in a traditional client/server environment????
Regards N Mc Donald
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