выполните в каждой базе что-то такое:
DO $$
DECLARE
table_name TEXT;
BEGIN
FOR table_name IN
SELECT '"' || n.nspname || '"."' || c.relname || '"' AS tab
FROM pg_catalog.pg_class c, pg_catalog.pg_namespace n
WHERE
c.relnamespace = n.oid AND c.relhasoids AND n.nspname
NOT IN ('pg_catalog') order by c.oid
LOOP
EXECUTE 'ALTER TABLE ' || table_name || ' SET WITHOUT OIDS';
END LOOP;
END;
$$;