Re: Free disk space decreasing after running Vaccum Full

Hello ,
Thanks for your response. I am running vacuum full schema_name.table_name.
And after each table run - the amount of free space in the disk in decreasing.
Though I am not deleting any rows from the table.

Sabyasachi Mukherjee
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From: Wells Oliver <wells(dot)oliver(at)gmail(dot)com>
Sent: 28 June 2024 17:57
To: Ron Johnson <ronljohnsonjr(at)gmail(dot)com>
Cc: Pgsql-admin <pgsql-admin(at)lists(dot)postgresql(dot)org>
Subject: Re: Free disk space decreasing after running Vaccum Full

VACUUM FULL is designed to release disk space back to the OS by rebuilding the table. Unless I misunderstand, this is the effect and desired intent.

On Fri, Jun 28, 2024 at 7:53 AM Ron Johnson <ronljohnsonjr(at)gmail(dot)com<mailto:ronljohnsonjr(at)gmail(dot)com>> wrote:
On Fri, Jun 28, 2024 at 9:58 AM Sabyasachi Mukherjee <mukherjee(dot)sabyasachi(at)outlook(dot)com<mailto:mukherjee(dot)sabyasachi(at)outlook(dot)com>> wrote:
Hello All,
The disk space is decreasing drastically after running "Vaccum Full".
I was expecting increase of free disk space after running those commands. I am on Postgresql 16.1
Any guidance/advise?

3. VACUUM FULL should only be run after deleting or updating a significant portion of a table.

--
Wells Oliver
wells(dot)oliver(at)gmail(dot)com<mailto:wellsoliver(at)gmail(dot)com>