Investigate PostgreSQL disk usage

2015-11-24 - A simple how to
Tag: PostgreSQL

How to debug disk occupation in postgresql

• get a database oid number from ncdu in /var/lib/postgresql
• reconcile oid number and db name with : select oid,datname from pg_database where oid=18595;
• Then in database : select table_name,pg_relation_size(quote_ident(table_name)) from information_schema.tables where table_schema = 'public' order by 2;