public void LogDBStatus(string piServer)
        {
            piServer = string.IsNullOrEmpty(piServer) ? Constant.PIPServer : piServer;
            IStatistic st = DataAccess.CreateStatistic(piServer);

            st.LogSessionDB();
            st.LogTotalSessionDB();
            st.LogProcessDB();
            st.LogTotalProcessDB();
            AlertMail(st);
        }