Re: PostgreSQL 9.6 Temporary files

On Mon, Mar 19, 2018 at 1:12 PM, Jimmy Augustine <jimmy(dot)augustine(at)enyx(dot)fr>
wrote:

>
>
> 2018-03-19 18:09 GMT+01:00 Adrian Klaver <adrian(dot)klaver(at)aklaver(dot)com>:
>
>> On 03/19/2018 10:04 AM, Jimmy Augustine wrote:
>>
>>>
>>>
>>> 2018-03-19 17:45 GMT+01:00 Adrian Klaver <adrian(dot)klaver(at)aklaver(dot)com
>>> <mailto:adrian(dot)klaver(at)aklaver(dot)com>>:
>>>
>>> On 03/19/2018 09:31 AM, Jimmy Augustine wrote:
>>>
>>> Dear Friends,
>>>
>>> I am newbie to postgresql.
>>> I have 162 GB on my database but when I check size of all
>>> tables, I approximately obtain 80 GB.
>>> I also see that I have 68GB of temporary files however I only
>>> found 2.4MB at postgres/data/base/pgsql_tmp.
>>>
>>>
>>> Exactly how did you determine this?
>>>
>>> I used this command and sum result for all database :
>>> SELECT pg_size_pretty(pg_total_relation_size('table_name'));
>>>
>>> And this for complete database :
>>> SELECT pg_size_pretty(pg_database_size('Database Name'));
>>>
>>>
>> So where did the 68GB number for temporary files come from?
>>
>> I don't measure this value by my own. I was disappointed by the gap
> between the two queries, so I checked pgAdmin 4 and I saw this value.
>
>>
>> --
>> Adrian Klaver
>> adrian(dot)klaver(at)aklaver(dot)com
>>
>
>

*>I don't measure this value by my own. I was disappointed by the gap
between the two queries, so I checked pgAdmin 4 and I saw this value. *

*I think your problem is that SELECT
pg_size_pretty(pg_total_relation_size('table_name')); only looks at the
current database*

*but SELECT pg_size_pretty(pg_database_size('Database Name')); looks at
ALL databases.*

*Try this query instead to show individual database sizes.SELECT oid,
datname, pg_size_pretty(pg_database_size(datname))as
size_pretty, pg_database_size(datname) as size, (SELECT
pg_size_pretty (SUM( pg_database_size(datname))::bigint) FROM
pg_database) AS total, ((pg_database_size(datname) / (SELECT SUM(
pg_database_size(datname)) FROM
pg_database) ) * 100)::numeric(6,3) AS pct FROM pg_database ORDER BY
datname;*

--
*Melvin Davidson*
*Maj. Database & Exploration Specialist*
*Universe Exploration Command – UXC*
Employment by invitation only!