fixes #637 not able to recover from DB connection drops
fixes #637 not able to recover from DB connection drops

sean-gilliam/quartznet,quartznet/quartznet,quartznet/quartznet,sean-gilliam/quartznet,sean-gilliam/quartznet,quartznet/quartznet,quartznet/quartznet,quartznet/quartznet,sean-gilliam/quartznet,sean-gilliam/quartznet