On Mon, Mar 19, 2018 at 1:12 PM, Jimmy Augustine <jimmy.august...@enyx.fr> wrote:
> > > 2018-03-19 18:09 GMT+01:00 Adrian Klaver <adrian.kla...@aklaver.com>: > >> On 03/19/2018 10:04 AM, Jimmy Augustine wrote: >> >>> >>> >>> 2018-03-19 17:45 GMT+01:00 Adrian Klaver <adrian.kla...@aklaver.com >>> <mailto:adrian.kla...@aklaver.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.kla...@aklaver.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!
