Re: BUG #19014: Automatic aggressive VACUUM on template0 and template1 pg_shdepend runs every minute

On Thu, Aug 07, 2025 at 07:47:58AM +0000, PG Bug reporting form wrote:
> The following bug has been logged on the website:
> We only actively use the ecount database, yet our logs show that an
> automatic “aggressive” VACUUM is repeatedly running on
> template0.pg_catalog.pg_shdepend and template1.pg_catalog.pg_shdepend at
> roughly one-minute intervals. Since the template databases aren’t used for
> normal operations, these vacuums seem unnecessary and are consuming system
> resources. We believe this behavior is a bug.

Please check what is:
select now() - xact_start from pg_stat_activity order by xact_start asc nulls last limit 1

I bet you have some long transaction somewhere, and this table is shared
(same table visible in all databases).

Best regards,

depesz