Old Data from Auditing DB not Deleted

Hi Team ,

We have recently set the parameter  Delete Events Older than (days)  to 366 days from 36500 in our BO 4.0 ( Ver= SP7 Patch 2  DB= SQL 2008 ) Landscape  in all system ( DEV ,TST, PRD ). In  DEV & Test we have successfully saved space, as we observed the Available free space  increased to  48 % from 0 % in the data files for the Audit db . But in the BO Production environment , this is not the case. We are  observing growth in temp db growth , but no increase in  Available free space.  Please advice on this.

Regards ,

Abhinav