Re: Query to detect long-running transactions?

am Mon, dem 22.10.2007, um 10:46:58 -0400 mailte Brian Hurt folgendes:
>
> I'm wondering if there is a query I could run to detect long-running
> transactions? Basically, I want to know all transactions (either on a
> given server or just on a given database) that have been running for
> longer than some parameterized amount of time.

You can log all statements with a duration time higher than a limit:

log_min_duration_statement = N

with N in ms.

>
> I've spent some time with the friendly manual (especially Chapter 42 and
> 12), and didn't see anything usefull.
>
> I'm having a problem with stupid humans (including yours truely)
> forgetting they have a transaction outstanding and wandering off for a
> weekend. What I'd like to do is write a quick script that queries the

You can query pg_stat_activity for query_start and compare that with the
current time to find long running transactions (current_query : '<IDLE>
in transaction'). Hope that helps.

Andreas
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Andreas Kretschmer
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