Difficult ClassLoader problems with multiple deployed enterprise Apps

Question

Greetings!
When multiple instances of an enterprise application are deployed, ClassLoader issues are causing ClassCast Exceptions in the instantiation of Stateless SessionBeans. These ClassCast Exceptions are causing the Stateless Session beans to not be created appropriately/correctly, and in turn there is an InvocationTargetException resulting in an HTTP 500 Internal Server Error (mapped to a custom handler).
The setup is SJSAS2005Q2, JDK 1.5, MySQL 5.0, Linux (RedHat 9, and Debian 3.0/3.1)
Below is a typical example:
Exception creating stateless session bean : [{0}]java.lang.reflect.InvocationTargetException
<<long stack Trace omitted>>
Caused by: java.lang.ClassCastException: $Proxy111     at com.acjust.ecommerce.ejb.preferences.PreferenceManagerBean.ejbCreate(PreferenceManagerBean.java:354)     ... 67 moreHere is the code from PreferenceManagerBean, the offending line is the (first one) that does a lookup on PreferencesBean and casts the result. This is a SessionFacade (there are many others) and they all (may) exhibit this behavior when there are multiple enterprise apps running.
    public void ejbCreate() {
         LookupServiceHelper lookup = LookupServiceHelper.getInstance();
         preferencesHome = (LocalPreferencesHome)
               lookup.getLocalHome(IConstants.PREFERENCES_BEAN);
         companyInformationHome = (LocalCompanyInformationHome)
               lookup.getLocalHome(IConstants.COMPANY_INFORMATION_BEAN);
         businessAddressHome = (LocalBusinessAddressHome)
               lookup.getLocalHome(IConstants.BUSINESS_ADDRESS_BEAN);
         sitePreferencesHome = (LocalSitePreferencesHome)
               lookup.getLocalHome(IConstants.SITE_PREFERENCES_BEAN);
         paymentPreferencesHome = (LocalPaymentPreferencesHome)
               lookup.getLocalHome(IConstants.PAYMENT_PREFERENCES_BEAN);
         productPreferencesHome = (LocalProductPreferencesHome)
               lookup.getLocalHome(IConstants.PRODUCT_PREFERENCES_BEAN);
    }When there is one instance of the App, it works perfectly. When there are two instances, one works perfectly, and the other one will have the above issues with the instantiation of Stateless Session Beans (the broken enterprise app is the one that is NOT loaded or reloaded most recently).
Thinking that the problem may be solved by rearranging or repackaging the software, multiple solutions have been tried. (ClassCast Exceptions such as these are typically the result of helper classes being loaded by one class-loader, then loaded by another, compared or casted, and the two are not equivalent). In this case, though, the software is behaving as though each enterprise app does not have its own class loader hierarchy, which is obviously highly undesirable for the situation at-hand. At any rate, bundling all library classes at the app server classpath level, putting all library classes in each jar, and war, and putting all library classes in the ear/lib directory and using MANIFEST.MF classpath entries to point all ear subcomponents at the library classes - none of these potential solutions has alleviated this problem. In addition, the EJB classes themselves triggering the exception(s) are not helper classes but EJBs that are correctly packaged in their respective EJB-JARS.
Here is the sun SJSAS 8 classloader hierarchy from the userguide:
http://docs.sun.com/source/817-6087/dgdeploy.html#wp58491
Can somebody from the Sun App Server team speak to whether or not this is an Application Server issue? Why should the classloader hierarchy from one enterprise app interfere with any other? Are there known workarounds?
Any help is greatly appreciated.
Best, Adam

Answer 1

Hi Ken,
I have pretty much ruled out "artifacts" in the Application Server's Classpath, because we already tried reinstalling the Application Server. It is a freshly downloaded SJSAS 8 2005 Q2 downloaded a few days ago with nothing added to the Server Classpath other than a database driver [${com.sun.aas.installRoot}/mysql/lib/mysql-connector-java-3.1.11-bin.jar added to the server CLASSPATH suffix after the PointBase driver(s)].
Yes, each ear has its own name. Once the two enterprise apps have been created/packaged by the ANT build script (they are the same except for the slight differences in deployment descriptors we discussed earlier), one is renamed and we use the SJSAS administrative console to deploy them, both deploy correctly, without errors and begin listening for connections at their respective context-roots. Each enterprise application has two web-wars, one public/customer facing, and one administrative. The first enterprise app listens on /e (public facing) and /a (administrative) and the second listens on / (public facing) and /admin (administrative).
Also, you are correct; each ear has its own copy of the LookupServiceHelper class. Again, there is nothing shared on the App Server Classpath other than that jdbc driver for mysql.
Here is the LookupServiceHelper code:
package com.acjust.ecommerce.util;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.logging.Logger;
import javax.ejb.EJBLocalHome;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.sql.DataSource;
* This class provides JNDI helper functions to look up EJB
* Home implementations.
* @author Copyright (c) 1998-2005 by A. C. Just, Inc. All Rights Reserved.
public class LookupServiceHelper {
    * This is the only object of type LookupServiceHelper; this class
    * is a singleton.
    private static LookupServiceHelper instance = null;
     * The logging object for this singleton
    private final Logger logger = Logger.getLogger(getClass().getName());
    private InitialContext initialContext = null;
    private Map cache = null;
     * The no argument constructor is private to enforce the fact
     * that we do not want to create any other instances of this
     * class.
    private LookupServiceHelper() {
        try {
            initialContext = new InitialContext();          
            cache = Collections.synchronizedMap(new HashMap());
        } catch (NamingException ne) {
            throw new LookupServiceException(ne);
        } catch (Exception e) {
            throw new LookupServiceException(e);
     * This method returns the only object of this class.
     * @return instance The only object of type LookupServiceHelper.
    public static LookupServiceHelper getInstance() {
         if(null == instance) {
              try {
                   instance = new LookupServiceHelper();
              } catch (LookupServiceException lse) {
                   instance.logger.severe("Failed to create lookup service " +
                             lse.getMessage());
         return instance;
     * This utility method looks up an enterprise JavaBean
     * in the distributed naming service.  It is not type safe;
     * that property is guaranteed by the callers.
     * @param bean The name of the enterprise JavaBean to find
     * in the naming service (a prefix will be automatically added).
     * @return An Object that can be casted to a LocalHomeInterface.
    public EJBLocalHome getLocalHome(String bean) {
        EJBLocalHome localHome = null;
        logger.entering("LookupServiceHelper","getLocalHome",bean);
        try {
            String jndiHomeName = getFullyQualifiedEJBName(bean);
            logger.info("looking for " + jndiHomeName);
            if (cache.containsKey(jndiHomeName)) {
                 logger.info("found cached reference");
                localHome = (EJBLocalHome) cache.get(jndiHomeName);
            } else {
                 logger.info("no reference found; performing lookup");                 
                localHome = (EJBLocalHome) initialContext.lookup(jndiHomeName);
                cache.put(jndiHomeName, localHome);
        } catch (NamingException ne) {
            throw new LookupServiceException(ne);
        } catch (Exception e) {
            throw new LookupServiceException(e);
        logger.exiting("LookupServiceHelper","getLocalHome",localHome);
        return localHome;
     * This utility method looks up a javax.mail.Session session
     * in the distributed naming service.  It is not type safe;
     * that property is guaranteed by the callers.
     * @param resource The name of the mail session resource to find
     * in the naming service (a prefix will be automatically added).
     * @return An Object that can be casted to a javax.mail.Session.
    public javax.mail.Session getMailSession(String resource) {
        javax.mail.Session session = null;
        logger.entering("LookupServiceHelper","getMailSession",resource);
        try {
            String jndiName = getFullyQualifiedMailResourceName(resource);
            logger.info("looking for " + jndiName);
            if (cache.containsKey(jndiName)) {
                 logger.info("found cached reference");
                session = (javax.mail.Session) cache.get(jndiName);
            } else {
                 logger.info("no reference found; performing lookup");
                session = (javax.mail.Session) initialContext.lookup(jndiName);
                cache.put(jndiName, session);
        } catch (NamingException ne) {
            throw new LookupServiceException(ne);
        } catch (Exception e) {
            throw new LookupServiceException(e);
        logger.exiting("LookupServiceHelper","getMailSession",session);
        return session;
      * Get a connection from the database pool.
      * @return Connection
     public Connection getDBConnection(String resource) {
          Connection connection = null;
          try {
               String jndiName = getFullyQualifiedDBName(resource);
               logger.info("looking for " + jndiName);
               if(cache.containsKey(jndiName)) {
                    logger.info("found cached reference");
                    connection = (Connection) cache.get(jndiName);
               } else {
                    logger.info("no reference found; performing lookup");
                    DataSource dataSource = (DataSource) initialContext
                              .lookup(jndiName);
                    connection = dataSource.getConnection();
                    //do not cache the database connection;
                    //you will get an IllegalStateException if you do
                    //cache.put(jndiName,connection);
          } catch(NamingException ne) {
               logger.warning("getConnection failed (naming): " + ne.getMessage());
               throw new LookupServiceException(ne);
          } catch (SQLException sql) {
               logger.warning("getConnection failed (db): " + sql.getMessage());
               throw new LookupServiceException(sql);
          return connection;
     * This utility method takes an enterprise JavaBean name
     * and combines it with a prefix to form a fully qualified name
     * suitable for using to query the distributed naming service.
     * @param bean The name of the enterprise JavaBean to add.
     * @return The fully qualified name (e.g. java:comp/env/ejb/ABeanRef).
    private String getFullyQualifiedEJBName(String bean) {
        return IConstants.JNDI_EJB_PREFIX + bean;
     * This utility method takes a messaging resource name
     * and combines it with a prefix to form a fully qualified name
     * suitable for using to query the distributed naming service.
     * @param resource The name of the mail resource
     * @return The fully qualified name (e.g. java:comp/env/mail/MailSessionRef).
    private String getFullyQualifiedMailResourceName(String resource) {
        return IConstants.JNDI_MAIL_PREFIX + resource;
     * This utility method takes a messaging resource name
     * and combines it with a prefix to form a fully qualified name
     * suitable for using to query the distributed naming service.
     * @param jdbc The name of the JDBC resource.
     * @return The fully qualified name (e.g. java:comp/env/jdbc/mysql).
    private String getFullyQualifiedDBName(String resource) {
         return IConstants.JNDI_DB_PREFIX + resource;
Some sample exception stack trace(s) (this is a different stateless session than the one before - but indicative of the same problem).
[#|2005-11-10T14:00:20.566-0800|INFO|sun-appserver-pe8.1_02|javax.enterprise.system.container.ejb|_ThreadID=29;|EJB5070: Exception creating stateless session bean : [{0}]
java.lang.reflect.InvocationTargetException
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:585)
     at com.sun.ejb.containers.StatelessSessionContainer.createStatelessEJB(StatelessSessionContainer.java:410)
     at com.sun.ejb.containers.StatelessSessionContainer.access$100(StatelessSessionContainer.java:75)
     at com.sun.ejb.containers.StatelessSessionContainer$SessionContextFactory.create(StatelessSessionContainer.java:597)
     at com.sun.ejb.containers.util.pool.NonBlockingPool.getObject(NonBlockingPool.java:168)
     at com.sun.ejb.containers.StatelessSessionContainer._getContext(StatelessSessionContainer.java:359)
     at com.sun.ejb.containers.BaseContainer.getContext(BaseContainer.java:1072)
     at com.sun.ejb.containers.BaseContainer.preInvoke(BaseContainer.java:772)
     at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:126)
     at $Proxy167.authenticateCustomer(Unknown Source)
     at com.acjust.ecommerce.web.businessdelegate.customer.CustomerManagerBusinessDelegate.authenticate(CustomerManagerBusinessDelegate.java:77)
     at com.acjust.ecommerce.web.action.customer.LoginAction.execute(LoginAction.java:29)
     at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)
     at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
     at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
     at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:747)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:860)
     at sun.reflect.GeneratedMethodAccessor297.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:585)
     at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:249)
     at java.security.AccessController.doPrivileged(Native Method)
     at javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
     at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:282)
     at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:165)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:257)
     at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:55)
     at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:161)
     at java.security.AccessController.doPrivileged(Native Method)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:263)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:225)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:173)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:132)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:933)
     at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:185)
     at com.sun.enterprise.web.connector.grizzly.ProcessorTask.process(ProcessorTask.java:653)
     at com.sun.enterprise.web.connector.grizzly.ProcessorTask.process(ProcessorTask.java:534)
     at com.sun.enterprise.web.connector.grizzly.ProcessorTask.doTask(ProcessorTask.java:403)
     at com.sun.enterprise.web.connector.grizzly.WorkerThread.run(WorkerThread.java:55)
Caused by: java.lang.ClassCastException: $Proxy214
     at com.acjust.ecommerce.ejb.client.customermanager.CustomerManagerBean.ejbCreate(CustomerManagerBean.java:71)
     ... 49 more
|#]
[#|2005-11-10T14:00:20.577-0800|INFO|sun-appserver-pe8.1_02|javax.enterprise.system.container.ejb|_ThreadID=29;|EJB5018: An exception was thrown during an ejb invocation on [CustomerManagerBean]|#]
[#|2005-11-10T14:00:20.578-0800|INFO|sun-appserver-pe8.1_02|javax.enterprise.system.container.ejb|_ThreadID=29;|
javax.ejb.EJBException: nested exception is: javax.ejb.EJBException: nested exception is: javax.ejb.CreateException: Could not create stateless EJB: java.lang.reflect.InvocationTargetException
javax.ejb.EJBException: nested exception is: javax.ejb.CreateException: Could not create stateless EJB: java.lang.reflect.InvocationTargetException
javax.ejb.CreateException: Could not create stateless EJB: java.lang.reflect.InvocationTargetException
     at com.sun.ejb.containers.StatelessSessionContainer.createStatelessEJB(StatelessSessionContainer.java:418)
     at com.sun.ejb.containers.StatelessSessionContainer.access$100(StatelessSessionContainer.java:75)
     at com.sun.ejb.containers.StatelessSessionContainer$SessionContextFactory.create(StatelessSessionContainer.java:597)
     at com.sun.ejb.containers.util.pool.NonBlockingPool.getObject(NonBlockingPool.java:168)
     at com.sun.ejb.containers.StatelessSessionContainer._getContext(StatelessSessionContainer.java:359)
     at com.sun.ejb.containers.BaseContainer.getContext(BaseContainer.java:1072)
     at com.sun.ejb.containers.BaseContainer.preInvoke(BaseContainer.java:772)
     at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:126)
     at $Proxy167.authenticateCustomer(Unknown Source)
     at com.acjust.ecommerce.web.businessdelegate.customer.CustomerManagerBusinessDelegate.authenticate(CustomerManagerBusinessDelegate.java:77)
     at com.acjust.ecommerce.web.action.customer.LoginAction.execute(LoginAction.java:29)
     at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)
     at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
     at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
     at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:747)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:860)
     at sun.reflect.GeneratedMethodAccessor297.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:585)
     at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:249)
     at java.security.AccessController.doPrivileged(Native Method)
     at javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
     at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:282)
     at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:165)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:257)
     at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:55)
     at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:161)
     at java.security.AccessController.doPrivileged(Native Method)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:263)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:225)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:173)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:132)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:933)
     at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:185)
     at com.sun.enterprise.web.connector.grizzly.ProcessorTask.process(ProcessorTask.java:653)
     at com.sun.enterprise.web.connector.grizzly.ProcessorTask.process(ProcessorTask.java:534)
     at com.sun.enterprise.web.connector.grizzly.ProcessorTask.doTask(ProcessorTask.java:403)
     at com.sun.enterprise.web.connector.grizzly.WorkerThread.run(WorkerThread.java:55)
javax.ejb.EJBException: nested exception is: javax.ejb.CreateException: Could not create stateless EJB: java.lang.reflect.InvocationTargetException
     at com.sun.ejb.containers.StatelessSessionContainer$SessionContextFactory.create(StatelessSessionContainer.java:599)
     at com.sun.ejb.containers.util.pool.NonBlockingPool.getObject(NonBlockingPool.java:168)
     at com.sun.ejb.containers.StatelessSessionContainer._getContext(StatelessSessionContainer.java:359)
     at com.sun.ejb.containers.BaseContainer.getContext(BaseContainer.java:1072)
     at com.sun.ejb.containers.BaseContainer.preInvoke(BaseContainer.java:772)
     at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:126)
     at $Proxy167.authenticateCustomer(Unknown Source)
     at com.acjust.ecommerce.web.businessdelegate.customer.CustomerManagerBusinessDelegate.authenticate(CustomerManagerBusinessDelegate.java:77)
     at com.acjust.ecommerce.web.action.customer.LoginAction.execute(LoginAction.java:29)
     at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)
     at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
     at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
     at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:747)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:860)
     at sun.reflect.GeneratedMethodAccessor297.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:585)
     at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:249)
     at java.security.AccessController.doPrivileged(Native Method)
     at javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
     at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:282)
     at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:165)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:257)
     at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:55)
     at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:161)
     at java.security.AccessController.doPrivileged(Native Method)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:263)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:225)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:173)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:132)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:933)
     at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:185)
     at com.sun.enterprise.web.connector.grizzly.ProcessorTask.process(ProcessorTask.java:653)
     at com.sun.enterprise.web.connector.grizzly.ProcessorTask.process(ProcessorTask.java:534)
     at com.sun.enterprise.web.connector.grizzly.ProcessorTask.doTask(ProcessorTask.java:403)
     at com.sun.enterprise.web.connector.grizzly.WorkerThread.run(WorkerThread.java:55)
javax.ejb.EJBException: nested exception is: javax.ejb.EJBException: nested exception is: javax.ejb.CreateException: Could not create stateless EJB: java.lang.reflect.InvocationTargetException
     at com.sun.ejb.containers.StatelessSessionContainer._getContext(StatelessSessionContainer.java:364)
     at com.sun.ejb.containers.BaseContainer.getContext(BaseContainer.java:1072)
     at com.sun.ejb.containers.BaseContainer.preInvoke(BaseContainer.java:772)
     at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:126)
     at $Proxy167.authenticateCustomer(Unknown Source)
     at com.acjust.ecommerce.web.businessdelegate.customer.CustomerManagerBusinessDelegate.authenticate(CustomerManagerBusinessDelegate.java:77)
     at com.acjust.ecommerce.web.action.customer.LoginAction.execute(LoginAction.java:29)
     at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)
     at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
     at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
     at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:747)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:860)
     at sun.reflect.GeneratedMethodAccessor297.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:585)
     at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:249)
     at java.security.AccessController.doPrivileged(Native Method)
     at javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
     at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:282)
     at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:165)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:257)
     at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:55)
     at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:161)
     at java.security.AccessController.doPrivileged(Native Method)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:263)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:225)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:173)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:132)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:933)
     at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:185)
     at com.sun.enterprise.web.connector.grizzly.ProcessorTask.process(ProcessorTask.java:653)
     at com.sun.enterprise.web.connector.grizzly.ProcessorTask.process(ProcessorTask.java:534)
     at com.sun.enterprise.web.connector.grizzly.ProcessorTask.doTask(ProcessorTask.java:403)
     at com.sun.enterprise.web.connector.grizzly.WorkerThread.run(WorkerThread.java:55)
|#]
[#|2005-11-10T14:00:20.651-0800|WARNING|sun-appserver-pe8.1_02|org.apache.struts.action.RequestProcessor|_ThreadID=29;|Unhandled Exception thrown: class javax.ejb.EJBException|#]
[#|2005-11-10T14:00:20.779-0800|SEVERE|sun-appserver-pe8.1_02|javax.enterprise.system.container.web|_ThreadID=29;|StandardWrapperValve[action]: Servlet.service() for servlet action threw exception
javax.ejb.EJBException: nested exception is: javax.ejb.EJBException: nested exception is: javax.ejb.CreateException: Could not create stateless EJB: java.lang.reflect.InvocationTargetException
javax.ejb.EJBException: nested exception is: javax.ejb.CreateException: Could not create stateless EJB: java.lang.reflect.InvocationTargetException
javax.ejb.CreateException: Could not create stateless EJB: java.lang.reflect.InvocationTargetException
     at com.sun.ejb.containers.StatelessSessionContainer.createStatelessEJB(StatelessSessionContainer.java:418)
     at com.sun.ejb.containers.StatelessSessionContainer.access$100(StatelessSessionContainer.java:75)
     at com.sun.ejb.containers.StatelessSessionContainer$SessionContextFactory.create(StatelessSessionContainer.java:597)
     at com.sun.ejb.containers.util.pool.NonBlockingPool.getObject(NonBlockingPool.java:168)
     at com.sun.ejb.containers.StatelessSessionContainer._getContext(StatelessSessionContainer.java:359)
     at com.sun.ejb.containers.BaseContainer.getContext(BaseContainer.java:1072)
     at com.sun.ejb.containers.BaseContainer.preInvoke(BaseContainer.java:772)
     at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:126)
     at $Proxy167.authenticateCustomer(Unknown Source)
     at com.acjust.ecommerce.web.businessdelegate.customer.CustomerManagerBusinessDelegate.authenticate(CustomerManagerBusinessDelegate.java:77)
     at com.acjust.ecommerce.web.action.customer.LoginAction.execute(LoginAction.java:29)
     at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)
     at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
     at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
     at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:747)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:860)
     at sun.reflect.GeneratedMethodAccessor297.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:585)
     at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:249)
     at java.security.AccessController.doPrivileged(Native Method)
     at javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
     at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:282)
     at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:165)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:257)
     at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:55)
     at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:161)
     at java.security.AccessController.doPrivileged(Native Method)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:263)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:225)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:173)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:132)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:933)
     at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:185)
     at com.sun.enterprise.web.connector.grizzly.ProcessorTask.process(ProcessorTask.java:653)
     at com.sun.enterprise.web.connector.grizzly.ProcessorTask.process(ProcessorTask.java:534)
     at com.sun.enterprise.web.connector.grizzly.Proce