Horton

Re: Disk is filling up with large files. How can I clean?

Philip Semanchuk <philip@americanefficient.com>

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From: Philip Semanchuk <philip@americanefficient.com>
To: Torsten Förtsch <tfoertsch123@gmail.com>
Cc: Mikael Petterson <mikaelpetterson@hotmail.com>, "pgsql-general@lists.postgresql.org" <pgsql-general@lists.postgresql.org>
Date: 2024-10-09T13:02:38Z
Lists: pgsql-general 

> On Oct 9, 2024, at 5:52 AM, Torsten Förtsch <tfoertsch123@gmail.com> wrote:
> 
> Filenames like 16665, 16665.1, 16665.2 etc all represent the same table (or similar). The number 16665 is called the file node.
> 
> To get a list of file nodes for a specific database you can run:
> 
> SELECT oid::regclass::text, relfilenode FROM pg_class;
> 
> The /16384/ in the path represents the database. To decipher that you can run:
> 
> SELECT datname, oid FROM pg_database;
> 
> Once you have all that information, you know which database to connect to and which tables are big. Then you can DROP/DELETE/TRUNCATE or so.

Mikael, if you’re unaware of VACUUM FULL (as opposed to just VACUUM), you should read about that too.

Hope that helps,
Philip