Radius database connectivity

I have a question about db connectivity with Radius. I currently have OpenRadius connecting to a mssql database using unixODBC/TDS. If the database ever goes down for some reason and then comes back up, I have to restart Radius in order to re-establish db connectivity. Is this an openradius problem or is it a unixODBC issue? Does anyone know how I would be able to get connectivity to reestablish automatically? Thanks, W