"Purge DB Now" is not working!

Hello,

I have tried to minimize the database size by deleting logs older than 400 days.

It must reduce the database size to at least %50 of it.

After pressing “Purge DB Now” and after a long time there is no change in database size and Matomo says “ Last deletion was on: Sep 21, 2018 ”

Database size

Current database size: 168.4 G

Estimated database size after purge: 146.2 G

Estimated space saved: 22.1 G

Is there any SQL scripts to do it directly and safely in DB?

Any suggestion?

Continuing the discussion from "Purge DB Now" is not working!:

Is there any plan for using Oracle Database?

I have the same behavior with my instance.

But in my case, my database is with 1 TB.