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How to save data before power failure ?
Message
De
08/01/2002 02:51:44
Al Doman (En ligne)
M3 Enterprises Inc.
North Vancouver, Colombie Britannique, Canada
 
 
À
06/01/2002 16:34:23
Information générale
Forum:
Visual FoxPro
Catégorie:
Problèmes
Divers
Thread ID:
00600557
Message ID:
00601825
Vues:
29
>>>Unfortunately, a UPS is not always an available option. We have data logging applications that write 3-5 rows per second for approximately 1 Gigabyte of data in environments where UPS's are explicitly forbidden (plant safety rules in the petro-chemical industry.)
>>
>>Interesting. What is the rationale behind banning UPSs?
>
>Safety. When they cut power to the site because of a gas leak, they don't want the UPS or the equipment plugged into it to cause an explosion.
>
>Here is a customer with the requirement: http://www.hibernia.ca/index.html

Ah, I see. I understand those offshore boys are very paranoid about fire; they can't get away from one.

Sounds like they would best be served by a transaction log-based DBMS and/or one that is specifically designed to tolerate hardware failure (real or "simulated" < g >)
Regards. Al

"Violence is the last refuge of the incompetent." -- Isaac Asimov
"Never let your sense of morals prevent you from doing what is right." -- Isaac Asimov

Neither a despot, nor a doormat, be

Every app wants to be a database app when it grows up
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