How to detect Postgres deadlocks? - Mailing list pgsql-general

From andre
Subject How to detect Postgres deadlocks?
Date
Msg-id 6c3954020608231245l3035ffbby41cfdbfac2d37326@mail.google.com
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Responses Re: How to detect Postgres deadlocks?  (Scott Marlowe <smarlowe@g2switchworks.com>)
List pgsql-general
Hi,

We are using Postgres 7.4.5, and I'm trying to find a way to detect and gather deadlock information.

1) Which sql queries should I use to detect deadlocks while they are happening? I see the deadlock info on the log file, but I'd like to query the database to see them as they happen...

2) Which fields on which pg catalogs indicate a deadlock condition?

3) How can I get more info about the processes involved on deadlocks?

4) How can I get the sql statements associated with the processes involved on deadlocks?

On the logs I see the procpids of the processes involved on past deadlocks, but I 'd like to know how to get those procpids, and how to get the "current_query" associated with them...

Thank you in advance,

Andre Philippi

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