ERROR: cache lookup failed for relation 17442 - Mailing list pgsql-bugs

Hi All,

   I've been getting these errors ("ERROR:  cache lookup failed for
relation 17442")  in my logs for a while now.   It originally seemed
like a hardware problem, however now we getting them pretty consistently
on a couple servers.  I've scalled down the schema to the one table and
the function involved and included a code snipet to make a bunch of
connections and loop around calling the same function.   It usually
takes 100-2000 iterations before these messages start appearing in the
log.  I've also included the original function, this takes 10,000
iterations for the error to start showing.   I should note, we've been
getting these erros since version 7, this is the first time they were
reproducable..

With the original function, the log messages were slightly different and
usually caused the server to reset:
i.e.
ERROR:  type "t" already exists
ERROR:  duplicate key violates unique constraint
"pg_type_typname_nsp_index"
ERROR:  duplicate key violates unique constraint
"pg_type_typname_nsp_index"
ERROR:  duplicate key violates unique constraint
"pg_type_typname_nsp_index"
CONTEXT:  SQL statement "create temp table tmp_children ( uniqid bigint,
memberid bigint, membertype varchar(50), ownerid smallint, tag
varchar(50), level int4 )"
    PL/pgSQL function "fngetcompositeids2" line 14 at SQL statement
ERROR:  duplicate key violates unique constraint
"pg_type_typname_nsp_index"
ERROR:  cache lookup failed for type 2449707570
FATAL:  cache lookup failed for type 2449707570

Environment info:  Postgres v8, suse linix with latest kernal patches,
filesystem: reiserfs.

Please let me know if you need anymore information.  No data is need,
just the schema included.

Thanks
Michael








--
-- PostgreSQL database dump
--

SET client_encoding = 'SQL_ASCII';
SET check_function_bodies = false;
SET client_min_messages = warning;

--
-- Name: SCHEMA public; Type: COMMENT; Schema: -; Owner: fiasco
--

COMMENT ON SCHEMA public IS 'Standard public schema';


SET search_path = public, pg_catalog;

--
-- Name: plpgsql_call_handler(); Type: FUNCTION; Schema: public; Owner: fiasco
--

CREATE FUNCTION plpgsql_call_handler() RETURNS language_handler
    AS '$libdir/plpgsql', 'plpgsql_call_handler'
    LANGUAGE c;


ALTER FUNCTION public.plpgsql_call_handler() OWNER TO fiasco;

--
-- Name: plpgsql; Type: PROCEDURAL LANGUAGE; Schema: public; Owner:
--

CREATE TRUSTED PROCEDURAL LANGUAGE plpgsql HANDLER plpgsql_call_handler;


--
-- Name: date_value; Type: TYPE; Schema: public; Owner: guerin
--

CREATE TYPE date_value AS (
    tsvalue double precision,
    tsdate timestamp without time zone
);


ALTER TYPE public.date_value OWNER TO guerin;

--
-- Name: object_composite_row_3; Type: TYPE; Schema: public; Owner: guerin
--

CREATE TYPE object_composite_row_3 AS (
    uniqid bigint,
    memberid bigint,
    membertype character varying(50),
    ownerid smallint,
    tag character varying(50),
    "level" integer
);


ALTER TYPE public.object_composite_row_3 OWNER TO guerin;

--
-- Name: fngetcompositeids2(bigint); Type: FUNCTION; Schema: public; Owner: fiasco
--

CREATE FUNCTION fngetcompositeids2(bigint) RETURNS SETOF object_composite_row_3
    AS $_$

 declare
    r object_composite_row_3%rowtype;
    pid alias for $1;
    x   int;
    qry text;
    retval int;
    rec record;

 begin
    x := 1;

   if not table_exists('tchildren') then
     create temp table tchildren (
       uniqid bigint,
       memberid bigint,
       membertype varchar(50),
       ownerid smallint,
       tag varchar(50),
       level int4
     );
   else
     EXECUTE 'truncate table tchildren;';
   end if;

   EXECUTE 'insert into tchildren
             select uniqId,memberId,memberType,ownerid,tag, ' || x || ' as level
             from tblObjectComposite
             where uniqid = ' || pid || '::bigint;';

   qry:= 'select count(*) as numrows from (select * from tchildren where level = ' || x || ' limit 1) as x;';
   FOR rec IN EXECUTE qry LOOP
     retVal:= rec.numrows;
   END LOOP;

   while (retVal > 0) loop
       x := x + 1;
       EXECUTE 'insert into tchildren
                 select oc.uniqid,oc.memberid, oc.membertype,oc.ownerid,oc.tag, ' || x  ||
               ' from tblobjectcomposite oc, tchildren tmp
                  where  oc.uniqid = tmp.memberid and level = (' || (x-1) || ');';

       qry:= 'select count(*) as numrows from (select * from tchildren where level = ' || x || ' limit 1) as x;';
       FOR rec IN EXECUTE qry LOOP
         retVal:= rec.numrows;
       END LOOP;
   end loop;

   FOR r IN EXECUTE '
     select uniqId,memberId,memberType,ownerid,tag,level from tchildren order by level' LOOP
     RETURN NEXT r;
   END LOOP;

   return;
 END;

 $_$
    LANGUAGE plpgsql;


ALTER FUNCTION public.fngetcompositeids2(bigint) OWNER TO fiasco;

--
-- Name: fngetcompositeids2_orig(bigint); Type: FUNCTION; Schema: public; Owner: guerin
--

CREATE FUNCTION fngetcompositeids2_orig(bigint) RETURNS SETOF object_composite_row_3
    AS $_$

 declare
    r object_composite_row_3%rowtype;
    pid alias for $1;
    x   int;
    qry text;
    retval int;
    rec record;

 begin
    x := 1;

   create temp table tmp_children (
       uniqid bigint,
       memberid bigint,
       membertype varchar(50),
       ownerid smallint,
       tag varchar(50),
       level int4
   );

   EXECUTE 'insert into tmp_children
             select uniqId,memberId,memberType,ownerid,tag, ' || x || ' as level
             from tblObjectComposite
             where uniqid = ' || pid || '::bigint;';

   qry:= 'select count(*) as numrows from (select * from tmp_children where level = ' || x || ' limit 1) as x;';
   FOR rec IN EXECUTE qry LOOP
     retVal:= rec.numrows;
   END LOOP;

   while (retVal > 0) loop
       x := x + 1;
       EXECUTE 'insert into tmp_children
                 select oc.uniqid,oc.memberid, oc.membertype,oc.ownerid,oc.tag, ' || x  ||
               ' from tblobjectcomposite oc, tmp_children tmp
                  where  oc.uniqid = tmp.memberid and level = (' || (x-1) || ');';

       qry:= 'select count(*) as numrows from (select * from tmp_children where level = ' || x || ' limit 1) as x;';
       FOR rec IN EXECUTE qry LOOP
         retVal:= rec.numrows;
       END LOOP;
   end loop;

   FOR r IN EXECUTE '
     select uniqId,memberId,memberType,ownerid,tag,level from tmp_children order by level' LOOP
     RETURN NEXT r;
   END LOOP;

   drop table tmp_children;

   return;
 END;


 $_$
    LANGUAGE plpgsql;


ALTER FUNCTION public.fngetcompositeids2_orig(bigint) OWNER TO guerin;

--
-- Name: table_exists(character varying); Type: FUNCTION; Schema: public; Owner: fiasco
--

CREATE FUNCTION table_exists(character varying) RETURNS boolean
    AS $_$

DECLARE
    t_name ALIAS for $1;
    t_result VARCHAR;
BEGIN

    if EXISTS (SELECT relname FROM pg_class WHERE relname ~* ('^' || t_name || '$')
        AND relkind = 'r' and pg_table_is_visible(oid)) then
        RETURN TRUE;
    ELSE
        RETURN FALSE;
    END IF;
END;
$_$
    LANGUAGE plpgsql;


ALTER FUNCTION public.table_exists(character varying) OWNER TO fiasco;

--
-- Name: activity; Type: VIEW; Schema: public; Owner: guerin
--

CREATE VIEW activity AS
    SELECT c.relname, l.relation, l."database", l."transaction", l.pid, l."mode", l.granted FROM (pg_locks l JOIN
pg_classc ON ((l.relation = c.oid))); 


ALTER TABLE public.activity OWNER TO guerin;

SET default_tablespace = '';

SET default_with_oids = true;

--
-- Name: pga_forms; Type: TABLE; Schema: public; Owner: sa; Tablespace:
--

CREATE TABLE pga_forms (
    formname character varying(64),
    formsource text
);


ALTER TABLE public.pga_forms OWNER TO sa;

--
-- Name: pga_layout; Type: TABLE; Schema: public; Owner: sa; Tablespace:
--

CREATE TABLE pga_layout (
    tablename character varying(64),
    nrcols smallint,
    colnames text,
    colwidth text
);


ALTER TABLE public.pga_layout OWNER TO sa;

--
-- Name: pga_queries; Type: TABLE; Schema: public; Owner: sa; Tablespace:
--

CREATE TABLE pga_queries (
    queryname character varying(64),
    querytype character(1),
    querycommand text,
    querytables text,
    querylinks text,
    queryresults text,
    querycomments text
);


ALTER TABLE public.pga_queries OWNER TO sa;

--
-- Name: pga_reports; Type: TABLE; Schema: public; Owner: sa; Tablespace:
--

CREATE TABLE pga_reports (
    reportname character varying(64),
    reportsource text,
    reportbody text,
    reportprocs text,
    reportoptions text
);


ALTER TABLE public.pga_reports OWNER TO sa;

--
-- Name: pga_schema; Type: TABLE; Schema: public; Owner: sa; Tablespace:
--

CREATE TABLE pga_schema (
    schemaname character varying(64),
    schematables text,
    schemalinks text
);


ALTER TABLE public.pga_schema OWNER TO sa;

--
-- Name: pga_scripts; Type: TABLE; Schema: public; Owner: sa; Tablespace:
--

CREATE TABLE pga_scripts (
    scriptname character varying(64),
    scriptsource text
);


ALTER TABLE public.pga_scripts OWNER TO sa;

SET default_with_oids = false;

--
-- Name: tblobjectcomposite; Type: TABLE; Schema: public; Owner: fiasco; Tablespace:
--

CREATE TABLE tblobjectcomposite (
    uniqid bigint,
    "type" character varying(50),
    memberid bigint,
    tag character varying(50),
    membertype character varying(50),
    ownerid smallint
);


ALTER TABLE public.tblobjectcomposite OWNER TO fiasco;

--
-- Data for Name: pga_forms; Type: TABLE DATA; Schema: public; Owner: sa
--

COPY pga_forms (formname, formsource) FROM stdin;
\.


--
-- Data for Name: pga_layout; Type: TABLE DATA; Schema: public; Owner: sa
--

COPY pga_layout (tablename, nrcols, colnames, colwidth) FROM stdin;
\.


--
-- Data for Name: pga_queries; Type: TABLE DATA; Schema: public; Owner: sa
--

COPY pga_queries (queryname, querytype, querycommand, querytables, querylinks, queryresults, querycomments) FROM stdin;
\.


--
-- Data for Name: pga_reports; Type: TABLE DATA; Schema: public; Owner: sa
--

COPY pga_reports (reportname, reportsource, reportbody, reportprocs, reportoptions) FROM stdin;
\.


--
-- Data for Name: pga_schema; Type: TABLE DATA; Schema: public; Owner: sa
--

COPY pga_schema (schemaname, schematables, schemalinks) FROM stdin;
\.


--
-- Data for Name: pga_scripts; Type: TABLE DATA; Schema: public; Owner: sa
--

COPY pga_scripts (scriptname, scriptsource) FROM stdin;
\.


--
-- Data for Name: tblobjectcomposite; Type: TABLE DATA; Schema: public; Owner: fiasco
--

COPY tblobjectcomposite (uniqid, "type", memberid, tag, membertype, ownerid) FROM stdin;
\.


--
-- Name: composite_memberid; Type: INDEX; Schema: public; Owner: fiasco; Tablespace:
--

CREATE INDEX composite_memberid ON tblobjectcomposite USING btree (memberid);


ALTER INDEX public.composite_memberid OWNER TO fiasco;

--
-- Name: composite_uniqid; Type: INDEX; Schema: public; Owner: fiasco; Tablespace:
--

CREATE INDEX composite_uniqid ON tblobjectcomposite USING btree (uniqid);


ALTER INDEX public.composite_uniqid OWNER TO fiasco;

--
-- Name: idx_unique_composite; Type: INDEX; Schema: public; Owner: fiasco; Tablespace:
--

CREATE UNIQUE INDEX idx_unique_composite ON tblobjectcomposite USING btree (uniqid, tag);


ALTER INDEX public.idx_unique_composite OWNER TO fiasco;

--
-- Name: public; Type: ACL; Schema: -; Owner: fiasco
--

REVOKE ALL ON SCHEMA public FROM PUBLIC;
REVOKE ALL ON SCHEMA public FROM fiasco;
GRANT ALL ON SCHEMA public TO fiasco;
GRANT ALL ON SCHEMA public TO PUBLIC;


--
-- Name: pga_forms; Type: ACL; Schema: public; Owner: sa
--

REVOKE ALL ON TABLE pga_forms FROM PUBLIC;
REVOKE ALL ON TABLE pga_forms FROM sa;
GRANT ALL ON TABLE pga_forms TO sa;
GRANT ALL ON TABLE pga_forms TO PUBLIC;


--
-- Name: pga_layout; Type: ACL; Schema: public; Owner: sa
--

REVOKE ALL ON TABLE pga_layout FROM PUBLIC;
REVOKE ALL ON TABLE pga_layout FROM sa;
GRANT ALL ON TABLE pga_layout TO sa;
GRANT ALL ON TABLE pga_layout TO PUBLIC;


--
-- Name: pga_queries; Type: ACL; Schema: public; Owner: sa
--

REVOKE ALL ON TABLE pga_queries FROM PUBLIC;
REVOKE ALL ON TABLE pga_queries FROM sa;
GRANT ALL ON TABLE pga_queries TO sa;
GRANT ALL ON TABLE pga_queries TO PUBLIC;


--
-- Name: pga_reports; Type: ACL; Schema: public; Owner: sa
--

REVOKE ALL ON TABLE pga_reports FROM PUBLIC;
REVOKE ALL ON TABLE pga_reports FROM sa;
GRANT ALL ON TABLE pga_reports TO sa;
GRANT ALL ON TABLE pga_reports TO PUBLIC;


--
-- Name: pga_schema; Type: ACL; Schema: public; Owner: sa
--

REVOKE ALL ON TABLE pga_schema FROM PUBLIC;
REVOKE ALL ON TABLE pga_schema FROM sa;
GRANT ALL ON TABLE pga_schema TO sa;
GRANT ALL ON TABLE pga_schema TO PUBLIC;


--
-- Name: pga_scripts; Type: ACL; Schema: public; Owner: sa
--

REVOKE ALL ON TABLE pga_scripts FROM PUBLIC;
REVOKE ALL ON TABLE pga_scripts FROM sa;
GRANT ALL ON TABLE pga_scripts TO sa;
GRANT ALL ON TABLE pga_scripts TO PUBLIC;


--
-- Name: tblobjectcomposite; Type: ACL; Schema: public; Owner: fiasco
--

REVOKE ALL ON TABLE tblobjectcomposite FROM PUBLIC;
REVOKE ALL ON TABLE tblobjectcomposite FROM fiasco;
GRANT ALL ON TABLE tblobjectcomposite TO fiasco;
GRANT ALL ON TABLE tblobjectcomposite TO PUBLIC;


--
-- PostgreSQL database dump complete
--