Subject RE: [firebird-support] Conflicting updates
Author Dunbar, Norman
Hi Rick,

>> I'm seeing a few values in tables that are twice what they should be.
>> ...
>> I'm at a loss to explain how my assumption of a race condition can be
>> possible. The two transactions can't see each others data
>> ...
>> If my reasoning isn't flawed, I'll have to drop the race condition
>> theory and look at the algorithms again.

Quoting Helen, from The Firebird Book, page 506:

"Firebird does not permit dirty reads."

So your belief that one transaction cannot see the other transaction's
data is correct. I'm suspecting you may have an algorithm, problem. Is
the fault occurring if you only ever have on session/transaction running
at once?

Good hunting!


Cheers,
Norman.

Norman Dunbar
Dunbar IT Consultants Ltd
Tel: 0779 3292 984
Tel: 0773 4531 439

Registered address:
Thorpe House
61 Richardshaw Lane
Pudsey
West Yorkshire
United Kingdom
LS28 7EL

Company Number: 05132767



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