Over the years, SimpleRisk has tried to support databases other than MySQL.  Most recently, we spent a significant amount of time working with and attempting to support MariaDB, as it was advertised as a 1:1 replacement for MySQL.  Unfortunately, we found that to definitely not be the case.  Supporting it required special accommodations to be made for both table structures and command line arguments.  Thus, we made the determination to focus exclusively on developing SimpleRisk for the MySQL server and client and will not support SimpleRisk instances running any other database.