java 连接sybase 数据库12.5无法连通

帮朋友写了一个jsp页面帮他实现一个法院的led大屏幕的显示页面,实现还是很简单的，只是在连接数据库时出现了点问题：无法连接数据库，debug了一下发现报错在
创建conn（url,user,password）连接上，sybase版本是12.5，操做系统是sybase安装的机子是小型机，liunix系统，地址192.16.80.195端口4100数据库名j贴出代码，不给出配置文件和common.PropertiesUnit类，不需要大家调试，请有经验的朋友帮我想想可能的错误情况：

ps:url连接，用户名，数据库密码是我最大的怀疑出错的地方，但是朋友说一定没问题，难道是我的包不对？引入了jconn3.jar；和 jTDS3.jar两个jar包（我也不知道用那个索性都引入了）。


非常感谢达人的指点，小生经验不足。。。
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<%@ page contentType="text/html;charset=utf-8"%>
<%@ page import="java.sql.*"%>
<%@ page import="common.PropertiesUnit"%>
<%@ page import="com.sybase.jdbc3.jdbc.SybDriver"%>
<%@ page import="java.util.Date"%>
<%@ page import="java.text.*"%>
<%@ page import="java.util.Calendar"%>
<%
int time =-30;
String tableWidth = "98%";
String textcolour = "white";
String tableBorder = "1";
String bgcolor = "black";
String frame="below";
String scrollAmount="3";
String bordercolor="white";
String rules="all";
String xunhuncishu="10";
String flashtime="180";
String file = "D:\\WEB\\SWH\\sinoPNS\\config.properties";//读取配置文件
PropertiesUnit conf = new PropertiesUnit(file);
try{
//PropertiesUnit conf = new PropertiesUnit(file);
if(conf!=null){
tableWidth = conf.getValue("tableWidth");
textcolour = conf.getValue("textcolour");
tableBorder = conf.getValue("tableBorder");
bgcolor = conf.getValue("bgcolor");
bordercolor=conf.getValue("bordercolor");
rules=conf.getValue("rules");
xunhuncishu=conf.getValue("xunhuncishu");
flashtime=conf.getValue("flashtime");
scrollAmount=conf.getValue("scrollAmount");
frame=conf.getValue("frame");
time =Integer.parseInt( conf.getValue("time"));//预计开庭时间
}
}
catch(Exception ex){
ex.printStackTrace();
System.out.println("无法读取配置文件!!!");
}
%>
<script language="javascript">
setInterval("document.getElementById('time').innerHTML=new Date().toLocaleString()+' 星期'+'日一二三四五六'.charAt(new Date().getDay());",10);
</script>
<html>
<head>
<title>法院信息公告系统</title>
<%
response.setHeader("refresh",flashtime);
%>
</head>
<body bgcolor=<%=bgcolor%> text=<%=textcolour%> >
<table ><tr><td><font color="white" size="6"> 开庭信息</font></td><td width="20%"></td><td><font color="white" size="4" id="time"></font></td></tr></table>
<table border=<%=tableBorder %> width="<%=tableWidth%>" bordercolor=<%=bordercolor %> rules="none" frame="hsides" cellspacing="0">
<tr>
<td align="center" width=20%><font size="5">案号</font></td>
<td align="center" width=40%><font size="5">案由</font></td>
<td align="center" width="10%"><font size="5">承办人</font></td>
<td align="center" width="10%"><font size="5">开庭时间</font></td>
<td align="center" width="10%"><font size="5">开庭地点</font></td>
<td align="center" width="10%"><font size="5">书记员</font></td>

</tr></table>
<MARQUEE scrollAmount=<%=scrollAmount %> direction=up width="100%" height="100%" >


<% //控制循环次数
int m=Integer.parseInt(xunhuncishu);
if(m<=0){m=1;}
for( int i=0;i<m;i++){
%>
<table border=<%=tableBorder %> width="<%=tableWidth%>" bordercolor=<%=bordercolor %> rules=<%=rules%> frame="<%=frame %>"cellspacing="0">


<%
String DBDRIVER = conf.getValue("DBDRIVER");
String DBURL = conf.getValue("DBURL");
String DBUSER = conf.getValue("DBUSER");
String DBPASSWORD = conf.getValue("DBPASSWORD");
//String sql_language = conf.getValue("sql_language");
Connection conn = null ;
System.out.println("开始创建驱动对象...");
Class.forName(DBDRIVER).newInstance(); //.newInstance()
System.out.println("创建驱动对象成功...");
String url =DBURL;//myDB为你的数据库名
%>
<%
try
{
//取当前时间
Date now = new Date();
SimpleDateFormat d = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String nowTime = d.format(now);
Calendar cd = Calendar.getInstance();
cd.setTime(d.parse(nowTime));
cd.add(Calendar.DATE, time);//增加一天

String aheadtime =d.format(cd.getTime());

System.out.println("conn对象开始建立连接...");
//conn= DriverManager.getConnection(url,DBUSER,DBPASSWORD);
conn= DriverManager.getConnection("jdbc:sybase:Tds:192.168.80.195:4100/JUDGE","sa","a741030elwengs");//这里就出错了- -
System.out.println("conn对象建立连接 成功...");
//String sql = "SELECT case_reasion,case_id,case_strattime,case_startplace,case_master,case_writer FROM case_inf where case_strattime "+" >="+"'"+ nowTime+"'"+
// " and '" + nowTime+ " ' >= ' " + aheadtime + " ' order by case_strattime asc ";
String sql = "SELECT case_reasion,case_id,case_strattime,case_startplace,case_master,case_writer FROM case_inf ";
System.out.println("11111111111111111="+sql);
PreparedStatement pstmt = null ;
System.out.println("创建pstmt ...");
pstmt = conn.prepareStatement(sql) ;
System.out.println("创建pstmt 成功...");
ResultSet rs = pstmt.executeQuery() ;
System.out.println("rs读取数据集 成功...");
%>


<%
//int i = 0 ;
while(rs.next())
{
//i++ ;
String case_reasion = rs.getString(1) ;
String case_id = rs.getString(2) ;
String case_strattime = rs.getString(3) ;
String case_startplace = rs.getString(4) ;
String case_master = rs.getString(5) ;
String case_writer = rs.getString(6) ;
%>
<tr>
<td align="center" width=20%><%=case_id %></td>
<td align="center" width=40%><%=case_reasion %></td>
<td align="center" width=10%><%= case_master%></td>
<td align="center" width=10%><%=case_strattime %></td>
<td align="center" width=10%><%= case_startplace%></td>
<td align="center" width=10%><%= case_writer%></td>
</tr>

<%
}
rs.close() ;
pstmt.close() ;
%>
<%
}
catch(Exception e)
{
System.out.println("数据库连接出错...");
%>
<h2>通讯出错！！</h2>
<%
}
finally
{
conn.close() ;
System.out.println("自动释放数据库连接...");
}
%>

<!-- 控制两张表之间的的间隔 -->
<%int lines=8;
String jiange =" ";
for(int j= 0;j<lines;j++)
{
jiange =jiange+"<br>";
} %>

<%=jiange%>
</table>
<%
}
%>

</MARQUEE>
</body>
</html>
================================

!#############################Sybase数据库配置文件##################################################

!sybase数据库注册驱动
DBDRIVER=com.sybase.jdbc3.jdbc.SybDriver
!sybase数据库连接myDB为你的数据库名
DBURL =jdbc:sybase:Tds:192.168.80.195:4100/JUDGE
DBUSER = sa
DBPASSWORD = 123

================================