Re: PostgreSQL 9.6 Temporary files

On 03/20/2018 03:16 AM, Jimmy Augustine wrote:
> Thanks all for your response,
>
> $du -h $MY_DATA/base/$BASE_OID/ returns 162GB but when I execute this query:
>
> |SELECT stats.relname AS table,
> pg_size_pretty(pg_relation_size(statsio.relid)) AS table_size,
> pg_size_pretty(pg_total_relation_size(statsio.relid) -
> pg_relation_size(statsio.relid)) AS related_objects_size,
> pg_size_pretty(pg_total_relation_size(statsio.relid)) AS
> total_table_size, stats.n_live_tup AS live_rows FROM
> pg_catalog.pg_statio_user_tables AS statsio JOIN pg_stat_user_tables AS
> stats USING (relname) WHERE stats.schemaname = current_schemaUNION ALL
> SELECT 'TOTAL' AS table,
> pg_size_pretty(sum(pg_relation_size(statsio.relid))) AS table_size,
> pg_size_pretty(sum(pg_total_relation_size(statsio.relid) -
> pg_relation_size(statsio.relid))) AS related_objects_size,
> pg_size_pretty(sum(pg_total_relation_size(statsio.relid))) AS
> total_table_size, sum(stats.n_live_tup) AS live_rows FROM
> pg_catalog.pg_statio_user_tables AS statsio JOIN pg_stat_user_tables AS
> stats USING (relname) WHERE stats.schemaname = current_schemaORDER BY
> live_rows ASC;
>
> |
>
> |I obtain 80GB in total_table_size (half of my database), where are
> missing data at?

First of all you are using pg_statio_user_tables which does not count
system tables.

Second pretty sure the use of current_schema is limiting the results to
only one schema in the database.

> |
>
>
> 2018-03-19 19:32 GMT+01:00 Adrian Klaver <adrian(dot)klaver(at)aklaver(dot)com
> <mailto:adrian(dot)klaver(at)aklaver(dot)com>>:
>
> On 03/19/2018 10:27 AM, Jimmy Augustine wrote:
>
> I tried this query and my database size is equal to 162GB.
>
>
> Well you can always look in $DATA directly. The database will be
> under $DATA/base/<db oid>.
>
> You can find the <db oid> like this:
>
> select oid, datname from  pg_database where datname='<db name>';
>
>
> --
> Adrian Klaver
> adrian(dot)klaver(at)aklaver(dot)com <mailto:adrian(dot)klaver(at)aklaver(dot)com>
>
>

--
Adrian Klaver
adrian(dot)klaver(at)aklaver(dot)com