Re: how to clean up temporary schemas (how to sync the system table with pg_dump)

> Gary Fu wrote:
>> I tried to use pg_dump to restore (sync) a database, but I noticed that
>> the system table pg_namespace was not synced.
>
> If you restore a database, entries in pg_namespace will be created if
> the dump contains any CREATE SCHEMA statements, i.e. if there are
> schemas in your original database.
>
> Check if the dump was created and restored by a database user with
> the appropriate permissions (a superuser ideally), and look out for
> error messages.
>
> Do not try to manually change pg_namespace. Just don't.
>
> Yours,
> Laurenz Albe
>

Thanks for the response.  I think the problem is because there are
temporary schemas (pg_temp_1, ..) in the source db and the pg_dump
does not allow them to be restored (see below).

My question now is why those temporary schemas won't be cleaned
after I restart the db ?

Thanks,
Gary

% pg_dump -n pg_temp_1 -h nppdist
--
-- PostgreSQL database dump
--
SET client_encoding = 'LATIN1';
SET standard_conforming_strings = off;
SET check_function_bodies = false;
SET client_min_messages = warning;
SET escape_string_warning = off;

--
-- Name: pg_temp_1; Type: SCHEMA; Schema: -; Owner: postgres
--

CREATE SCHEMA pg_temp_1;


ALTER SCHEMA pg_temp_1 OWNER TO postgres;

--
-- PostgreSQL database dump complete
--

-----------------------------------------------------
% pg_dump -n pg_temp_1 -h nppdist | psql -h nppsds1
SET
SET
SET
SET
SET
ERROR:  unacceptable schema name "pg_temp_1"
DETAIL:  The prefix "pg_" is reserved for system schemas.
ERROR:  schema "pg_temp_1" does not exist