public int getTrackingInfo() {
        int rowcount = 0;
        DBOperator dbOpr = new DBOperator("sqlserver");

        String table = "TrackingEvent_"
                + SemUtil.getDateTime(new Date(currentTime - 4 * oneHour),
                        "yyyyMM");
        String sql = "SELECT count(*) as count FROM " + table
                + " where evtdatetime>=? and evtdatetime<?";
        PreparedStatement ps = dbOpr.getPreparedStatement(sql);
        
        ResultSet rs = null;
        try {
            ps.setString(1, startTime);
            ps.setString(2, endTime);
            rs = ps.executeQuery();
            if (rs.next()) {
                rowcount = rs.getInt("count");
            }
            rs.close();
            ps.close();
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
            try {
                rs.close();
                ps.close();
            } catch (SQLException e1) {
                // TODO Auto-generated catch block
                e1.printStackTrace();
            }
        }catch (Exception e){
            System.out.println("trackingEvents timeout error");
        }
        return rowcount;
    }