Re: BUG #17394: pg_dump: query returned 0 rows instead of one:

PG Bug reporting form <noreply(at)postgresql(dot)org> writes:
> pg_dump: query returned 0 rows instead of one:
> SELECT proretset, prosrc, probin, pg_catalog.pg_get_function_arguments(oid)
> AS funcargs,pg_catalog.pg_get_function_identity_arguments(oid) AS funciargs,
> pg_catalog.pg_get_function_result(oid) AS funcresult,
> array_to_string(protrftypes, ' ') AS protrftypes, prokind, provolatile,
> proisstrict, prosecdef, proleakproof, proconfig, procost, prorows,
> proparallel, (SELECT lanname FROM pg_catalog.pg_language WHERE oid =
> prolang) AS lanname FROM pg_catalog.pg_proc WHERE oid =
> '1046460'::pg_catalog.oid

If it's repeatable, maybe reindexing pg_proc would help.

regards, tom lane