RE: Re: too many clients already

No pg-bouncer or connection pooling.
ps -elf | grep postgres | grep idle | wc -l ==> 61

and BTW: Running, say 500 one command psql in parallel will have the same affect..

-----Original Message-----
From: Rob Sargent <robjsargent(at)gmail(dot)com>
Sent: Thursday, April 02, 2020 6:10 PM
To: Abraham, Danny <danny_abraham(at)bmc(dot)com>
Cc: pgsql-general(at)postgresql(dot)org
Subject: [EXTERNAL] Re: too many clients already

> On Apr 2, 2020, at 9:06 AM, Abraham, Danny <danny_abraham(at)bmc(dot)com> wrote:
>
> Hi,
>
> Will appreciate a hint here.
>
> Running on a big and stressed AIX platform and receiving lots of "CDTFATAL: sorry, too many clients already"
> and transient difficulty to log in.
>
> Happens on all PG versions (Tested 9.5,10.4,11.5)
>
> Big installation: max_connections is 1200, shared_buffers is 2GB
>
> But .. select count(*) from pg_stat_activity is only 66.
>
> Thanks
>
> Danny
>
>
Lots of idle, kept-alive clients? Do you have a connection pooler (e.g. pg-bouncer)?