[Erro]JSTL + Derby = Não conecta

Boa Dia a todos !

Estou tentando fazer um exemplo pratico de uma tela de cadastro usando JSP JStl porem o meu fica dando datasource is null (mesmo se eu inserir dados no meu banco deixa a mesma mensagem) javax.servlet.jsp.JspException: 'dataSource' is null

segue abaixo os meus fonts

<%-- 
    Document   : gravaCliente
    Created on : 01/07/2008, 10:28:23
    Author     : patrick
--%>

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
   "http://www.w3.org/TR/html4/loose.dtd">
   <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
   <%@ taglib uri="http://java.sun.com/jsp/jstl/sql" prefix="sql" %>
   
<html>
    <head>
        <sql:setDataSource var="ds"
        driver="org.apache.derby.jdbc.EmbeddedDriver"
        url="jdbc:derby://localhost:1527/Derby"
        user="dbuser"
        password="dbsenha"
        scope="session" 
        
        />
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>Teste JSTL</title>
    </head>
    <body>
        <h1>Exemplo JSTL Tela Cadastro</h1>
        <hr>
        <form action="gravaCliente.jsp" method="post" />
        <label>Código</label><br>
        <input type="text" name="edtCodigo" size="10"><br>
        <label>Nome :</label>   
        <input type="text" name="edtNome" size="60"><br>
        <label>CpF:</label><br>
        <input type="text" name="edtcpf" size="10"><br>
        <label>RG:</label><br>
        <input type="text" name="edtRG" size="15"><br>
        <label>Estado:</label>
        <sql:query var="qryEstados" dataSource="${ds}">
             select * from  ESTADOS
             ORDER BY NOME
         </sql:query>
         
         <select name="cmbEstados">
             <c:forEach var="Estado" items="${qryEstados.row}">
                 <option value="PA"> ${Estado.nome} </option>
                 
             </c:forEach>
                       
         </select><br>
         
        <label>TELEFONE::</label><br>
        <input type="text" name="edtTelefone" size="15"><br>
        <label>Email:</label><br>
        <input type="text" name="edtEmail" size="15"><br>
        <hr>   
        
        <input accesskey="o" type="submit" name="BTok" value="ok" >
         <input accesskey="c" type="submit" name="BTCancelar" value="Limpar" >   
    </body>
</html>

Meu INdex:

<%-- 
    Document   : index
    Created on : 30/06/2008, 16:30:57
    Author     : patrick
--%>

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
   "http://www.w3.org/TR/html4/loose.dtd">
 <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
 <%@ taglib uri="http://java.sun.com/jsp/jstl/sql" prefix="sql" %>

<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>JSTL Derby</title>
    </head>
    <body>
        <c:catch var="ex">
            <sql:transaction dataSource="${ds}">
                  <sql:update var="gravaCli">
                      INSERT INTO CLIENTES 
                      (CODIGO,NOME,CPF,RG,TELEFONE,EMAIL,ESTADO)
                      VALUES (?,?,?,?,?,?,?)
                      
                      <sql:param value="${param['edtCodigo']}"/>
                      <sql:param value="${param['edtNome']}"/>
                      <sql:param value="${param['edtCPF']}"/>
                      <sql:param value="${param['edtRG']}" />
                      <sql:param value="${param['edtTelefone']}"/>
                      <sql:param value="${param['edtEmail']}"/>
                      <sql:param value="${param['cmbEstados']}"/>
                                 
                    </sql:update>
     
             </sql:transaction>
         
         </c:catch>
         <h1>
             <c:out value="${ex}" default="Gravação executada com sucesso!"/>
         </h1>
         
         <hr>
             <input type="button" value="Voltar" name="btVoltar" 
               onclick=  " history.back();" 
    ></body>
</html>

Aguardo respostas

Muito Obrigado