On Wed, Feb 14, 2024 at 10:23 AM Greg Sabino Mullane <htamfids@gmail.com> wrote:
Yes, definitely the wrong forum. RDS is not Postgres, and "parameter groups" is an Amazon thing. A quick web search would seem to indicate that the default group is replaced by the custom one, rather than enhancing it. But really, this is a simple "try it and see" sort of task.
Parameter Groups are AWS' name for, and clunky web implementation of, postgresql.conf. You can use the same Parameter Group for multiple instances, or you can create a different PaGr for each instance.
(Modifying a PaGr via the aws cli made it tolerably useful.)