Re: BUG #15661: Error connecting to the server

On Thu, Feb 28, 2019 at 3:22 AM PG Bug reporting form
<noreply@postgresql.org> wrote:
>
> The following bug has been logged on the website:
>
> Bug reference:      15661
> Logged by:          ZRIRAK YOUSSEF
> Email address:      youssef.zrirak@yazaki-europe.com
> PostgreSQL version: 9.4.0
> Operating system:   windows server 2012 R2
> Description:
>
> Hello
> we had faced many type this type of message ( Error connecting to the server
> :Fatal: too many clients already )
>
> could you please support in this subject

This is not a bug.  You either need to increase max_connections or
decrease the number of simultaneous connections.

David J.

p.s. if you didn't just choose a version randomly you really need to
put "updating and upgrading PostgreSQL" into the list of DBA tasks
that your system needs performed regularly.