enviroment: jboss-3.0.0_tomcat-4.0.3, windows 2000, oracle 8.1.7

session bean:
public class CompanySessionBean implements SessionBean
{
SessionContext sessionContext;
BeanSearch beanSearch = new BeanSearch();
CompanyLocalHome clh = null;

public void ejbCreate() throws CreateException {
System.out.println("CompanySessionBean.ejbCreate");
try {
Object ref = beanSearch.localSearch("Company");
clh = (CompanyLocalHome)ref;
}catch(NamingException ex) {
throw new CreateException(ex.getMessage());
}
}
...........
public CompanyLocal findCompanyByPrimarykey(String companyid)
{
try
{
CompanyLocal companyLocal = this.clh.findByPrimaryKey(companyid);
System.out.println("companyName="+companyLocal.getCompanyname());
return companyLocal;
}catch(Exception ex)
{
throw new EJBException(ex.getMessage());
}
}
}

client call:
void query_actionPerformed(ActionEvent e)
{
System.out.println("begin query");
CompanyLocal companyLocal = null;
try
{
companyLocal = this.companySession.findCompanyByPrimarykey(this.txtCompanyID.getText().trim());
}catch(Exception ex)
{
ex.printStackTrace();
}
}

Exception occurred during event dispatching:
java.lang.reflect.UndeclaredThrowableException: java.lang.ClassNotFoundException: org.jboss.ejb.plugins.local.EntityProxy (no security manager: RMI class loader disabled)
at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:313)
at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:127)
at sun.rmi.server.MarshalInputStream.resolveClass(MarshalInputStream.java:138)
at java.io.ObjectInputStream.inputClassDescriptor(ObjectInputStream.java:913)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:361)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:231)
at java.io.ObjectInputStream.inputObject(ObjectInputStream.java:1181)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:381)
at java.io.ObjectInputStream.inputClassFields(ObjectInputStream.java:2258)
at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:514)
at java.io.ObjectInputStream.inputObject(ObjectInputStream.java:1407)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:381)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:231)
at java.rmi.MarshalledObject.get(MarshalledObject.java:133)
at org.jboss.invocation.jrmp.interfaces.JRMPInvokerProxy.invoke(JRMPInvokerProxy.java:128)
at org.jboss.invocation.InvokerInterceptor.invoke(InvokerInterceptor.java:108)
at org.jboss.proxy.TransactionInterceptor.invoke(TransactionInterceptor.java:73)
at org.jboss.proxy.SecurityInterceptor.invoke(SecurityInterceptor.java:76)
at org.jboss.proxy.ejb.StatelessSessionInterceptor.invoke(StatelessSessionInterceptor.java:111)
at org.jboss.proxy.ClientContainer.invoke(ClientContainer.java:76)
at $Proxy1.findCompanyByPrimarykey(Unknown Source)


server.log shows the company is found and company name is also typed.