Bruce Momjian <pgman@candle.pha.pa.us> writes:
> Tom Lane wrote:
>> We could consider establishing a "soft" connection limit that's somewhat
>> less than max_connections, and allowing non-superusers to log in only
>> if the soft limit hasn't been exceeded. This does not guarantee that
>> superusers can always get in: the extra slots might have been filled by
>> other superuser connections. But it'd give them better odds than the
>> rabble.
> Yea, added to TODO:
> * Reserve last process slot for super-user if max_connections reached
I don't like phrasing it that way: if we are going to do this at all
then the number of reserved slots should be a configurable parameter.
If I were a DBA I'd want it to be at least two: figure one for a cron
job (doing backups, periodic vacuums, etc) and one for emergency
interactive superuser access. It definitely seems like something that
installations would have differing views about.
regards, tom lane
