Replace your url with fully qualified url, in Oracle I use
jdbc:oracle:thin:@myhost.myudomain.com:port:sid

-----Original Message-----
From: Tarek M. Nabil [mailto:[EMAIL PROTECTED] 
Sent: June 12, 2003 1:09 PM
To: 'Tomcat Users List' (E-mail)
Subject: JNDI DataSource

Hi,

I'm trying to setup a JDBC DataSource on Tomcat 4.1.24.

I performed the steps in the documentation:

1- Added this part to the GlobalNamingResources section of the server.xml

    <Resource name="jdbc/as400" scope="Shareable"
type="javax.sql.DataSource" auth="Container"/>
    <Resource name="UserDatabase" scope="Shareable"
type="org.apache.catalina.UserDatabase" auth="Container" description="User
database that can be updated and saved"/>
    <ResourceParams name="jdbc/as400">
      <parameter>
        <name>maxWait</name>
        <value>5000</value>
      </parameter>
      <parameter>
        <name>maxActive</name>
        <value>8</value>
      </parameter>
      <parameter>
        <name>url</name>
        <value>jdbc:as400:AS400</value>
      </parameter>
      <parameter>
        <name>password</name>
        <value>access2k</value>
      </parameter>
      <parameter>
        <name>driverClassName</name>
        <value>com.ibm.as400.access.AS400JDBCDriver</value>
      </parameter>
      <parameter>
        <name>maxIdle</name>
        <value>4</value>
      </parameter>
      <parameter>
        <name>username</name>
        <value>DBA</value>
      </parameter>
    </ResourceParams>
    <ResourceParams name="UserDatabase">
      <parameter>
        <name>factory</name>
        <value>org.apache.catalina.users.MemoryUserDatabaseFactory</value>
      </parameter>
      <parameter>
        <name>pathname</name>
        <value>conf/tomcat-users.xml</value>
      </parameter>
    </ResourceParams>

2- I added this to my web.xml

        <resource-ref>
                <description>
                    Resource reference to a factory for java.sql.Connection
                        instances that talk to an AS400 database
                </description>
                <res-ref-name>
                        jdbc/as400
                </res-ref-name>
                <res-type>
                        javax.sql.DataSource
                </res-type>
                <res-auth>
                        Container
                </res-auth>
        </resource-ref>

3- I put this in a JSP

<%@ page import="javax.naming.*, java.sql.*, javax.sql.*" %> 
<%
Context initCtx = new InitialContext();
Context envCtx = (Context) initCtx.lookup("java:comp/env");
DataSource ds = (DataSource)
  envCtx.lookup("jdbc/as400");

Connection conn = ds.getConnection();
conn.close();

%>


And Still, I get the following error when accessing the JSP

type Exception report

message 

description The server encountered an internal error () that prevented it
from fulfilling this request.

exception 

org.apache.jasper.JasperException: Cannot load JDBC driver class 'null'
        at
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:2
54)
        at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295)
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application
FilterChain.java:247)
        at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh
ain.java:193)
        at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.ja
va:256)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:643)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
        at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
        at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.ja
va:191)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:643)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
        at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
        at
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2415)
        at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180
)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:643)
        at
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.
java:171)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:641)
        at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172
)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:641)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
        at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
        at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java
:174)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:643)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
        at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
        at
org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223)
        at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:594)
        at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConne
ction(Http11Protocol.java:392)
        at
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:565)
        at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav
a:619)
        at java.lang.Thread.run(Thread.java:484)


root cause 

javax.servlet.ServletException: Cannot load JDBC driver class 'null'
        at
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImp
l.java:536)
        at org.apache.jsp.test_jsp._jspService(test_jsp.java:61)
        at
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:137)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:2
10)
        at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295)
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application
FilterChain.java:247)
        at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh
ain.java:193)
        at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.ja
va:256)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:643)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
        at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
        at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.ja
va:191)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:643)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
        at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
        at
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2415)
        at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180
)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:643)
        at
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.
java:171)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:641)
        at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172
)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:641)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
        at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
        at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java
:174)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:643)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
        at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
        at
org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223)
        at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:594)
        at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConne
ction(Http11Protocol.java:392)
        at
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:565)
        at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav
a:619)
        at java.lang.Thread.run(Thread.java:484)



----------------------------------------------------------------------------
----

Any help is appreciated.

Thanks,
Tarek M. Nabil

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