How to clean-up paadb.sql on SPS, if we use SPA?

Is any way to reduce paadb.sql database on SPS by making some cleaning job for old data. As it grows very fast (current size ~280 GB) without any options to control it. In addition it requires double space on SPS, as it makes own copy before back-up. We already had SPS outage due to not documented behavior during backup.

Kind regards,