configuring DBCP in Tomcat 4.0.1

[Rajeev Ravindran]

hi all,
i have followed the url Apache Tomcat DBCP for configuring Connection Pool in Tomcat 4.0.1 .I'm using MS-Access 2000 and backend..
i followed the methods as such but my tomcat is showing error in the startup itself..
ill copy the first few lines from my tomcat console

Starting service Tomcat-Standalone
Apache Tomcat/4.0.1
XmlMapper: Debug level: 3
XmlMapper: Validating = true
XmlMapper: Set locator : org.apache.xerces.readers.DefaultEntityHandler@19d0a1
Resolve: -//Sun Microsystems, Inc.//DTD Web Application 2.3//EN <a href="http://java.sun." target="_blank" rel="nofollow">http://java.sun.</a>
com/dtd/web-app_2_3.dtd
  Using alternate DTD /javax/servlet/resources/web-app_2_3.dtd
XmlMapper: org.apache.catalina.core.StandardContext.setPublicId(-//Sun Microsyst
ems, Inc.//DTD Web Application 2.3//EN)

if i remove the context from Server.xml it wont throw any error at console..
my Server.xml is as follows, im only copying the first few lines, i have updated my server.xml with the dat i found from url which i mentioned above, except for driver name and database url

 
<Context path="/DBTest" docBase="DBTest"
debug="5" reloadable="true" crossContext="true">

  <Resource name="jdbc/TestDB"
               auth="Container"
               type="javax.sql.DataSource"/>
....
....
    <parameter>
       <name>driverClassName</name>
       <value>sun.jdbc.odbc.JdbcOdbcDriver</value>
    </parameter>
    <parameter>
      <name>url</name>
      <value>jdbc :-o	 dbc:mydsn?autoReconnect=true</value>
    </parameter>
 

my web.xml is

 
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app
    PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
    "http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
  <resource-ref>
      <description>DB Connection</description>
      <res-ref-name>jdbc/TestDB</res-ref-name>
      <res-type>javax.sql.DataSource</res-type>
      <res-auth>Container</res-auth>
  </resource-ref>
</web-app>

i tried to run the jsp file but itz throwing

javax.naming.NamingException: Cannot create resource instance
        at org.apache.naming.NamingContext.lookup(NamingContext.java:837)
        at org.apache.naming.NamingContext.lookup(NamingContext.java:181)

i have created a contextRoot DBTest for running this but all in vain.
cld any1 help me to solve this situation..its very urgent..
thanks,
raj