Please help me in the cmp problem

hai everyone,
I set connection pool & deploy the bean in weblogic perfectly...
My connection pool look like this..
weblogic.jdbc.connectionPool.demoPool=\
url=jdbc

dbc:sample,\
driver=sun.jdbc.odbc.JdbcOdbcDriver,\
initialCapacity=1,\
maxCapacity=2,\
capacityIncrement=1,\
props=user=scott;password=tiger;server=none
# Add a TXDataSource for the connection pool:
weblogic.jdbc.TXDataSource.weblogic.jdbc.jts.demoPool=demoPool
#
# Add an ACL for the connection pool:
weblogic.allow.reserve.weblogic.jdbc.connectionPool.demoPool=everyone

But i have a problem while running a client it through an exception
As given below
javax.ejb.EJBException
at weblogic.rmi.extensions.AbstractRequest.sendReceive(AbstractRequest.java:76)
at ProductBeanHomeImpl_WLStub.create(ProductBeanHomeImpl_WLStub.java:184)
at ProductBeanHomeImpl_ServiceStub.create(Compiled Code)
at Client.main(Compiled Code)
Destroying products..
please help me in the problem what i have to do next.....

My code is given below
Product.java
-------------
import javax.ejb.*;
import java.rmi.RemoteException;
public interface Product extends EJBObject {
// Getter/setter methods for Entity Bean fields
public String getName() throws RemoteException;
public void setName(String name) throws RemoteException;

public String getDescription() throws RemoteException;
public void setDescription(String description) throws RemoteException;
public double getBasePrice() throws RemoteException;
public void setBasePrice(double price) throws RemoteException;

public String getProductID() throws RemoteException;
}

ProductBean.java
==================
import java.sql.*;
import javax.naming.*;
import javax.ejb.*;
import java.util.*;
import java.rmi.RemoteException;

public class ProductBean implements EntityBean {
protected EntityContext ctx;
// Container-managed state fields. Note that they must
// be public.
public String productID;// PK
public String name;
public String description;
public double basePrice;
public ProductBean() {
System.out.println("New Product Entity Bean Java Object created by EJB Container.");
}
//
// Business Logic Methods
//
// Simple getter/setter methods of Entity Bean fields.
public String getName() throws RemoteException {
System.out.println("getName() called.");
return name;
}

public void setName(String name) throws RemoteException {
System.out.println("getName() called.");
this.name = name;
}

public String getDescription() throws RemoteException {
System.out.println("getDescription() called.");
return description;
}

public void setDescription(String description) throws RemoteException {
System.out.println("setDescription() called.");
this.description = description;
}

public double getBasePrice() throws RemoteException {
System.out.println("getBasePrice() called.");
return basePrice;
}

public void setBasePrice(double price) throws RemoteException {
System.out.println("setBasePrice() called.");
this.basePrice = price;
}

public String getProductID() {
System.out.println("getProductID() called.");
return productID;
}
//
// EJB-required methods
//

public void ejbActivate() throws RemoteException {
System.out.println("ejbActivate() called.");
}

public void ejbRemove() throws RemoteException {
System.out.println("ejbRemove() called.");
}

public void ejbPassivate() throws RemoteException {
System.out.println("ejbPassivate () called.");
}

public void ejbLoad() throws RemoteException {
System.out.println("ejbLoad() called.");
}
public void ejbStore() throws RemoteException {
System.out.println("ejbStore() called.");
}

public void setEntityContext(EntityContext ctx) throws RemoteException {
System.out.println("setEntityContext called");
this.ctx = ctx;
}

public void unsetEntityContext() throws RemoteException {
System.out.println("unsetEntityContext called");
this.ctx = null;
}

public void ejbPostCreate(String productID, String name, String description, double basePrice) throws RemoteException {
System.out.println("ejbPostCreate() called");
}

public String ejbCreate(String productID, String name, String description, double basePrice) throws CreateException, RemoteException {
System.out.println("ejbCreate(" + productID + ", " + name + ", " + description + ", " + basePrice + ") called");
this.productID = productID;
this.name = name;
this.description = description;
this.basePrice = basePrice;
return null;
}
// No finder methods - they are implemented by Container
}
ProductHome
==============

import javax.ejb.*;
import java.rmi.RemoteException;
import java.util.Enumeration;

public interface ProductHome extends EJBHome {

Product create(String productID, String name, String description, double basePrice) throws CreateException, RemoteException;
// Finder methods. These are implemented by the
// container. You can customize the functionality of
// these methods by using the EJB Container tools.
public Product findByPrimaryKey(String key) throws FinderException, RemoteException;
public Enumeration findByName(String name) throws FinderException, RemoteException;
public Enumeration findByDescription(String description) throws FinderException, RemoteException;
public Enumeration findByBasePrice(double basePrice) throws FinderException, RemoteException;
public Enumeration findExpensiveProducts(double minPrice) throws FinderException, RemoteException;
public Enumeration findCheapProducts(double maxPrice) throws FinderException, RemoteException;
public Enumeration findAllProducts() throws FinderException, RemoteException;
}
ProductPk.java
==============
//package com.wiley.compBooks.roman.entity.product;
import java.io.Serializable;

public class ProductPK implements java.io.Serializable {

public String productID;
public ProductPK(String productID) {
this.productID = productID;
}
public ProductPK() {
}
public String toString() {
return productID.toString();
}
}
Client.java
=============
//package com.wiley.compBooks.roman.entity.product;
import javax.ejb.*;
import javax.naming.*;
import java.rmi.*;
import java.io.*;
import java.util.Enumeration;
import java.util.*;
/**
* Client test application on a Container-Managed Entity Bean, Product.
*/
public class Client {
public static void main(String[] args) {
ProductHome home = null;
try {
Properties props= new Properties();
props.put(Context.INITIAL_CONTEXT_FACTORY,"weblogic.jndi.WLInitialContextFactory");
Context ctx=new InitialContext(props);
home = (ProductHome) ctx.lookup("ProductHome");
home.create("123-456-7890", "P5-350", "350MhzPentium", 200);
home.create("123-456-7891", "P5-400", "400MhzPentium", 300);
home.create("123-456-7892", "P5-450", "450MhzPentium", 400);
home.create("123-456-7893", "SD-64", "64MBSDRAM", 50);
home.create("123-456-7894", "SD-128", "128MBSDRAM", 100);
home.create("123-456-7895", "SD-256", "256MBSDRAM", 200);
/*
* Find a Product, and print out it's description
*/
Enumeration enum = home.findByName("SD-64");
System.out.println("The following product descriptions match the product name SD-64:");
while (enum.hasMoreElements()) {
Product prod = (Product) enum.nextElement();
System.out.println(prod.getDescription());
}
System.out.println("Calling finder to find all products that cost $200");
enum = home.findByBasePrice(200);
while (enum.hasMoreElements()) {
Product prod = (Product) enum.nextElement();
System.out.println(prod.getDescription());
}
}
catch (Exception e) {
e.printStackTrace();
}
finally {
if (home != null) {
try {
System.out.println("Destroying products..");

/*
* Find all the products
*/
Enumeration enum = home.findAllProducts();
while (enum.hasMoreElements()) {
try {
Product prod = (Product) enum.nextElement();
if (prod.getProductID().startsWith("123")) {
prod.remove();
}
}
catch (Exception e) {
e.printStackTrace();
}
}
}
catch (Exception e) {
e.printStackTrace();
}
}
}
}
}
Finder script syntax look like this...
(=name $name)
(=description $description)
(=basePrice $basePrice)
(>basePrice $minPrice)
(<basePrice $minPrice)>
i set it in weblogic server...
Deploy bean in weblogic5.1 is perfect...
there is no problem in this...
I have a problem while running client...

Please help me in this problem