Re: Avoiding deadlocks ... - Mailing list pgsql-hackers

From Thom Brown
Subject Re: Avoiding deadlocks ...
Date
Msg-id AANLkTin_yzA+FkzRbD6d2JoSGyJd==8JrtWPWXsEcfZa@mail.gmail.com
Whole thread Raw
In response to Re: Avoiding deadlocks ...  (Josh Berkus <josh@agliodbs.com>)
List pgsql-hackers
On 20 August 2010 09:39, Josh Berkus <josh@agliodbs.com> wrote:
> On 8/19/10 3:51 PM, Josh Berkus wrote:
>> Kevin,
>>
>> This one is for you:
>>
>> Two sessions, in transaction:
>>
>> Process A             Process B
>>
>> update session where id = X;
>>                       update order where orderid = 5;
>> update order where orderid = 5;
>>                       update order where orderid = 5;
>> ... deadlock error.
>
> Johto on IRC pointed out I left something out of the above: "session" is
> referenced in an FK by "orders", and session = X is related to orderid = 5.
>

I was wondering what that had to do with anything.

--
Thom Brown
Registered Linux user: #516935


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