"Vilson farias" <vilson.farias@digitro.com.br> writes:
> Now why?
> relatorio=# DROP TABLE "pg_temp.1823.17";
> ERROR: class "pg_temp.1823.17" is a system catalog
Tables named pg_something are normally system tables, and so there's a
check to prevent you from deleting them. Perhaps it's being overly
enthusiastic by preventing you from deleting temp tables (comments
anyone?), but in the meantime, you can override the check by starting
the postmaster with -o "-O".
> I really need to erase these tables, because they are not been auto-removed
> after my application crashes. I have more than 100 zombie temp tables in my
> system.
That implies that you're suffering backend crashes, not just application
failures, and should be looked into.
regards, tom lane