Robert Haas <robertmhaas(at)gmail(dot)com> writes:
> I'm still puzzled that Tomas got it working at all. If MyDatabaseId
> hasn't been set yet, the how did we manage to build a relcache entry
> for anything - let alone an unshared catalog?
Well, he wasn't actually issuing a SQL query, just calling some of the
pgstat.c subroutines that underlie the view. It happens that the pgstat
module has no backend-local initialization (at the moment, and
discounting the issue of making the process's own pgstat_activity entry),
so they were happy enough. It was the syscache stuff that was spitting
up.
regards, tom lane