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Tom

Tom Lane wrote:

>Mark Lubratt <mark.lubratt@indeq.com> writes:
>
>
>>You mentioned that you'd see the problem during a large number of
>>concurrent transactions.  My question is, is this a necessary condition
>>for the database crashing when the plug was pulled, or did you need use
>>a large number of concurrent transactions to "guarantee" that when you
>>pulled the plug, that it would be at an inopportune time?  In other
>>words, is an IDE drive still "more" susceptible to a power outage
>>problem even under light load?
>>
>>
>
>A heavy load makes it more likely that you'd see the problem, but only
>because it improves the odds that there will be data "in flight" at the
>instant the power drops.  You can still lose on a lightly loaded system
>if your luck is bad.
>
>            regards, tom lane
>
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