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Flushing data to the tables
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À
01/08/2001 13:26:14
Information générale
Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Divers
Thread ID:
00538379
Message ID:
00538454
Vues:
15
>>>In a Web environment, I have 4 VFP servers running to process the incoming requests. I have found that occasionnaly, one save by a VFP server is not reflected immediately on another VFP server. What I mean by that is that it may takes up to two seconds before the other servers can read the updated data from the tables.
>>>
>>>It seems that I have to force a flush here.
>>>
>>>What would be the best approach to make sure all data is saved on disk immediately after the VFP server that did the save transaction?
>>
>>There was discussion about a similar problem but programs modifying table were located on separate PC's. If I remember correctly the solution was, in addition to what VLAD suggested, to RLOCK(myalias,0) to lock table header before read to make sure that updates from another program are visible.
>
>This is a strange situation. As I mentioned to Vlad, I am wondering if we force to use SYS(1104) in such an environment.


All Vlad sugestions work on VFP level but if delay is reletaded to OS than they wouldn't help.
Small correction, after RLOCK(myalias,0) you should immediatelly do UNLOCK.
--sb--
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