Re: Max connections reached without max connections reached

>
> > Sorry, I could have been clearer - pg_stat_activity is what I'm looking
> > at - I'm recording connection info from here every 15 seconds (from a
> > superuser account so I don't get locked out). It never peaks above 300
> > (in fact when the incident happens no new connections can come in so it
> > falls to around 100) - yet I'm seeing the log lines claim that I'm still
> > hitting 597 (600 - 3 reserved).
>
> What is the query you are using against pg_stat_activity?
>
>
For general counts ad-hoc we just use:

SELECT count(*) FROM pg_stat_activity

The monitoring system runs:

SELECT CASE WHEN usename IS NOT NULL THEN usename ELSE 'SYSTEM' END as
role,
datname AS database,
state,
wait_event,
count(*) AS connection
FROM pg_stat_activity
GROUP BY 1,2,3,4

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