Re: Relation 'pg_user' does not exist - Mailing list pgsql-general

On Wed, Nov 08, 2000 at 07:13:30PM -0500, Tom Lane wrote:
> The plot thickens ... what did you say the error message was
exactly?

!759 marauder@bofh:~$ pg_dump -h tweedledee ds
getTypes(): SELECT failed.  Explanation from backend: 'ERROR:
Relation 'pg_user' does not exist

When trying to recreate pg_user using your command:
template1=> CREATE VIEW pg_user AS
template1->         SELECT
template1->             usename,
template1->             usesysid,
template1->             usecreatedb,
template1->             usetrace,
template1->             usesuper,
template1->             usecatupd,
template1->             '********'::text as passwd,
template1->             valuntil
template1->         FROM pg_shadow
template1-> ;
ERROR:  Relation 'pg_user' already exists
(which is oddly different from the error I got the first time)

When trying to do something with pg_user in template1:
template1=> select * from pg_user;
NOTICE:  mdopen: couldn't open pg_user: No such file or directory
NOTICE:  mdopen: couldn't open pg_user: No such file or directory
NOTICE:  mdopen: couldn't open pg_user: No such file or directory
NOTICE:  mdopen: couldn't open pg_user: No such file or directory
NOTICE:  mdopen: couldn't open pg_user: No such file or directory
ERROR:  cannot open relation pg_user
template1=> \d pg_user
NOTICE:  mdopen: couldn't open pg_views: No such file or directory
NOTICE:  RelationIdBuildRelation: smgropen(pg_views): No such file or directory
NOTICE:  mdopen: couldn't open pg_views: No such file or directory
NOTICE:  mdopen: couldn't open pg_views: No such file or directory
NOTICE:  mdopen: couldn't open pg_views: No such file or directory
ERROR:  cannot open relation pg_views
template1=> \dt pg_user
NOTICE:  mdopen: couldn't open pg_user: No such file or directory
NOTICE:  mdopen: couldn't open pg_views: No such file or directory
NOTICE:  mdopen: couldn't open pg_views: No such file or directory
NOTICE:  mdopen: couldn't open pg_user: No such file or directory
NOTICE:  mdopen: couldn't open pg_user: No such file or directory
NOTICE:  mdopen: couldn't open pg_views: No such file or directory
NOTICE:  mdopen: couldn't open pg_views: No such file or directory
NOTICE:  mdopen: couldn't open pg_user: No such file or directory
NOTICE:  mdopen: couldn't open pg_views: No such file or directory
NOTICE:  mdopen: couldn't open pg_views: No such file or directory
ERROR:  cannot open relation pg_views

> Actually, what'd be really useful here is to see where the error is
> being reported.  Try this:

Tried it, couldn't get the breakpoint to trigger the first time,
restarted postgres, got a different set of messages again.

template1=> select * from pg_user;
ERROR:  Relation 'pg_user' does not exist

(bt:)
#0  0x812db0c in elog ()
#1  0x806dbae in heap_openr ()
#2  0x80c0088 in addRangeTableEntry ()
#3  0x80bac8d in transformTableEntry ()
#4  0x80bacc7 in transformTableEntry ()
#5  0x80ba824 in makeRangeTable ()
#6  0x80b18d7 in parse_analyze ()
#7  0x80b0260 in parse_analyze ()
#8  0x80aff2a in parse_analyze ()
#9  0x80ba3dd in parser ()
#10 0x80f4ddb in pg_parse_and_rewrite ()
#11 0x80f50a3 in pg_exec_query_dest ()
#12 0x80f5069 in pg_plan_query ()
#13 0x80f6172 in PostgresMain ()
#14 0x80dea6c in PostmasterMain ()
#15 0x80de5a8 in PostmasterMain ()
#16 0x80dd789 in PostmasterMain ()
#17 0x80dd186 in PostmasterMain ()
#18 0x80afe8f in main ()
#19 0x80639f9 in _start ()

(then:)
template1=> CREATE VIEW pg_user AS
template1->         SELECT
template1->             usename,
template1->             usesysid,
template1->             usecreatedb,
template1->             usetrace,
template1->             usesuper,
template1->             usecatupd,
template1->             '********'::text as passwd,
template1->             valuntil
template1->         FROM pg_shadow
template1-> ;
ERROR:  Illegal class name 'pg_user'
        The 'pg_' name prefix is reserved for system catalogs

Dammit, the error messages won't even stay constant...


--
Matt Beauregard
Information Technology Operations, DesignScape

Ph: +61 2 9361 4233   Fx: +61 2 9361 4633