public String getGeraGMP2() throws SQLException, ClassNotFoundException {
        String sts = new String();
        Connection conPol = conMgr.getConnection("PD");
        if (conPol == null) {
            throw new SQLException("Numero Maximo de Conexoes Atingida!");
        }
        try {
            Statement stmt = conPol.createStatement();
            String strQl = "SELECT * FROM tb_gmp; ";
            ResultSet rs = stmt.executeQuery(strQl);
            while (rs.next()) {
                sts = sts + "<option value= " + rs.getInt("cod_gmp") + "> GMP-" + rs.getString("str_gmp") + "</option>";
            }
        } finally {
            if (conPol != null) {
                conMgr.freeConnection("PD", conPol);
            }
        }
        return sts;
    }