Jens Hartwig <jhartwig(at)debis(dot)com> writes:
> when I try to access the system-table "pg_class", I get the following
> error:
> zeda=# select * from pg_class;
> NOTICE: get_groname: group 1 not found
> pqReadData() -- backend closed the channel unexpectedly.
Evidently you had created a group with sysid 1, granted some permissions
on some table to that group, and then deleted the group. Re-create the
group (CREATE GROUP foo WITH SYSID 1).
I thought the crash in this situation had been fixed long since, but
apparently not :-( ... it still fails in current sources. I'll make
sure it's fixed for 7.1.
regards, tom lane