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@jakobs.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

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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