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Message-ID: <1518603681.2402.0.camel@cybertec.at>
Subject: Re: Calculation of Database Size in postgres
From: Laurenz Albe <laurenz.albe@cybertec.at>
To: pavan95 <pavan.postgresdba@gmail.com>, pgsql-admin@postgresql.org
Date: Wed, 14 Feb 2018 11:21:21 +0100
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pavan95 wrote:
> In postgres for knowing the size of a database we generally use the system
> administration function "pg_database_size('database_name')".
> 
> I am curious to know how does this calculate internally from the pages(free
> pages/fragmented pages/full pages) stored in the disk?

It just adds up the sizes of the files that make up the database.

Yours,
Laurenz Albe