Procedure en postgres

Estoy usando este procedure

CREATE FUNCTION myfun(OUT mycursor refcursor) AS
$BODY$begin
OPEN mycursor FOR
SELECT
processes."PT_DLL_ID" AS pt_dll_id,
processes."PT_P_ID" AS pt_p_id,
processes."PT_CONTEXT" AS pt_context,
processes."PT_CURRENT_STEP" AS pt_current_step,
processes."PT_TIMER_IN" AS pt_timer_in,
processes."PT_TIMER_OUT" AS pt_timer_out,
processes."PT_PRIORITY" AS pt_priority,
processes."PT_STATUS" AS pt_status,
processes."PT_CHAMELEON_ID" AS pt_chameleon,
dllregistry."DLLT_DLL_LOCATION" AS dllt_dll_location,
processregistry."PR_LOCATIONT_ORI" AS pr_location_ori
FROM processes JOIN dllregistry ON processes."PT_DLL_ID" = dllregistry."DLLT_DLL_ID"
JOIN processregistry ON processes."PT_P_ID" = processregistry."PR_P_ID"
AND processes."PT_DLL_ID" = processregistry."PR_DLL_ID"
WHERE "PT_STATUS" = 0
ORDER BY pt_dll_id, pt_p_id, pt_context
LIMIT 1;
CLOSE mycursor;
END;$BODY$
LANGUAGE 'plpgsql' VOLATILE;

nose que estoy haciendo mal que al ejecutarlo por pgadmin con la sentence
SELECT myfun(); me retorna
Row myfun(refcursor)
1 "<unnamed portal 5>"

Agracederia si alguien puede ayudarme pls.

Eliana

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