Discourse occasionally runs a VACUUM on the database during migrations to make sure space is being reclaimed (see the db:migrate job in db.rake). You can disable this behaviour by setting the vacuum_db_days site setting to 0.
Discourse occasionally runs a VACUUM on the database during migrations to make sure space is being reclaimed (see the db:migrate job in db.rake). You can disable this behaviour by setting the vacuum_db_days site setting to 0.