2013/5/14 Francisco Porfirio <[email protected]>

> --Tamanho dos databases
> SELECT datname, pg_size_pretty(pg_database_size(datname))
> FROM pg_database;
>

Ok


--Tamanho de todas as tabelas.
> SELECT relname as "Table",
>        pg_size_pretty(pg_total_relation_size(relid)) As "Size",
>        pg_size_pretty(pg_total_relation_size(relid) -
> pg_relation_size(relid)) as "External Size"
>   FROM pg_catalog.pg_statio_user_tables ORDER BY
> pg_total_relation_size(relid) DESC;
>


Aqui vc está verificando apenas tabelas regulares, ou seja, NÃO está
considerando o catálogo... tente trocar "pg_statio_user_tables" por
"pg_stat_all_tables".

Att,

-- 
Fabrízio de Royes Mello
Consultoria/Coaching PostgreSQL
>> Blog sobre TI: http://fabriziomello.blogspot.com
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