Re: Deadlock

Am 02.04.24 um 19:09 schrieb Rajesh Kumar:
> Yes, I am trying to find out what message i should reply if I receive
> email with deadlock notification.
>
> I understand how deadlock occurs, hot to find them in logs, prevention
> of deadlock(ex: oqueries in order) etc.
>
> But since the deadlock_timeout is 1s, they don't probably hang around.
> So post getting an alert, not sure what to respond to them
>
> On Tue, 2 Apr 2024, 22:15 Holger Jakobs, <holger(at)jakobs(dot)com> wrote:
>
> Am 02.04.24 um 18:40 schrieb Rajesh Kumar:
>> Hi
>>
>> If I receive an alert for deadlock, what should I do? Like what
>> analysis should I do? No way to find a root cause?
>> Under pg_locks, what I can analyse?
>>
> If you receive an error with a deadlock, the current transaction
> is dead. You have to decide whether to try again.
>
> Within the error message you find a hint which other (not aborted)
> transaction was involved in the deadlock. So you have all the
> information you need to find the culprit.
>
> Regards,
>
> Holger
>
> --
>
> Holger Jakobs, Bergisch Gladbach, Tel. +49-178-9759012
>
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>
I wonder what you are writing about. A database doesn't send email
notifications. That must be a feature of some application.

So you will have to deal the the application code or its developers.

Or is it a customer sending you a message that some deadlock happened on
their system? Still, you have to deal with the application code or the
log files of the database system.

Regards,
Holger