Re: PostgreSQL 9.6 Temporary files

[Jimmy Augustine <jimmy.augustine@xxxxxxx>]

2018-03-19 18:15 GMT+01:00 Adrian Klaver <adrian.klaver@xxxxxxxxxxx>:

On 03/19/2018 10:12 AM, Jimmy Augustine wrote:

             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.

In what section of pgAdmin4?

In section "Statistics" when I click on my database.

Or do you know what query it used?

I have found this but not sure

SELECT temp_files AS "Temporary files"
     , temp_bytes AS "Size of temporary files"
FROM   pg_stat_database db;

    --     Adrian Klaver
    adrian.klaver@xxxxxxxxxxx <mailto:adrian.klaver@aklaver.com>

--
Adrian Klaver
adrian.klaver@xxxxxxxxxxx