www/content/blog/miscellaneous/debug-disk-usage-postgresql.md

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Investigate postgresql disk usage Investigate postgresql disk usage 2015-11-24 Investigate postgresql disk usage

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;