refresh library

Hi,

I use two raspberry kodis (osmc) on a mysql shared movie/audio library.
I use another Kodi on my Windows PC to scan and get library right.

Sometimes, the library isn’t refreshed (or reloaded from database) on the raspberries.
As I ever do some json-rpc command with php to do some stuff on rasps, is there a way to say the rasps to reload the datas ? I don’t mean to scan medias to add them into the library or search for anything on the net/scrappers, just reload the database to see last added movies/music without having to reboot.

Thanks