Hi i when i am trying to deploy an EJB module on weblogic server i get the

Question

Hi all,
when i am trying to deploy an EJB module on weblogic server i get the the following exception on the server.
Exception:weblogic.management.ApplicationException: prepare failed for test Module: test Error: Exception preparing module: EJBModule(test,status=NEW) Unable to deploy EJB: D:\bea\weblogic81b\server\bin\myserver\upload\test.jar from test.jar: weblogic.ejb20.deployer.DeploymentDescriptorException: Unable to load a class specified in your ejb-jar.xml: Class bytes found but defineClass()failed for: 'HelloBean' at weblogic.ejb20.deployer.MBeanDeploymentInfoImpl.initializeBeanInfos(MBeanDeploymentInfoImpl.java:525) at weblogic.ejb20.deployer.MBeanDeploymentInfoImpl.(MBeanDeploymentInfoImpl.java:230) at weblogic.ejb20.deployer.EJBDeployer.prepare(EJBDeployer.java:1256) at weblogic.ejb20.deployer.EJBModule.prepare(EJBModule.java:449) at weblogic.j2ee.J2EEApplicationContainer.prepareModule(J2EEApplicationContainer.java:2792) at weblogic.j2ee.J2EEApplicationContainer.prepareModules(J2EEApplicationContainer.java:1478) at weblogic.j2ee.J2EEApplicationContainer.prepare(J2EEApplicationContainer.java:1136) at weblogic.j2ee.J2EEApplicationContainer.prepare(J2EEApplicationContainer.java:975) at weblogic.management.deploy.slave.SlaveDeployer$ComponentActivateTask.prepareContainer(SlaveDeployer.java:2571) at weblogic.management.deploy.slave.SlaveDeployer$ActivateTask.createContainer(SlaveDeployer.java:2523) at weblogic.management.deploy.slave.SlaveDeployer$ActivateTask.prepare(SlaveDeployer.java:2453) at weblogic.management.deploy.slave.SlaveDeployer.processPrepareTask(SlaveDeployer.java:820) at weblogic.management.deploy.slave.SlaveDeployer.prepareDelta(SlaveDeployer.java:536) at weblogic.management.deploy.slave.SlaveDeployer.prepareUpdate(SlaveDeployer.java:494) at weblogic.drs.internal.SlaveCallbackHandler$1.execute(SlaveCallbackHandler.java:25) at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:178) at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:151)
[Deployer:149033]preparing application test on myserver
[Deployer:149033]failed application test on myserver
[Deployer:149034]An exception occurred for task [Deployer:149026]Deploy application test on myserver.: Exception:weblogic.management.ApplicationException: prepare failed for test Module: test Error: Exception preparing module: EJBModule(test,status=NEW) Unable to deploy EJB: D:\bea\weblogic81b\server\bin\myserver\upload\test.jar from test.jar: weblogic.ejb20.deployer.DeploymentDescriptorException: Unable to load a class specified in your ejb-jar.xml: Class bytes found but defineClass()failed for: 'HelloBean' at weblogic.ejb20.deployer.MBeanDeploymentInfoImpl.initializeBeanInfos(MBeanDeploymentInfoImpl.java:525) at weblogic.ejb20.deployer.MBeanDeploymentInfoImpl.(MBeanDeploymentInfoImpl.java:230) at weblogic.ejb20.deployer.EJBDeployer.prepare(EJBDeployer.java:1256) at weblogic.ejb20.deployer.EJBModule.prepare(EJBModule.java:449) at weblogic.j2ee.J2EEApplicationContainer.prepareModule(J2EEApplicationContainer.java:2792) at weblogic.j2ee.J2EEApplicationContainer.prepareModules(J2EEApplicationContainer.java:1478) at weblogic.j2ee.J2EEApplicationContainer.prepare(J2EEApplicationContainer.java:1136) at weblogic.j2ee.J2EEApplicationContainer.prepare(J2EEApplicationContainer.java:975) at weblogic.management.deploy.slave.SlaveDeployer$ComponentActivateTask.prepareContainer(SlaveDeployer.java:2571) at weblogic.management.deploy.slave.SlaveDeployer$ActivateTask.createContainer(SlaveDeployer.java:2523) at weblogic.management.deploy.slave.SlaveDeployer$ActivateTask.prepare(SlaveDeployer.java:2453) at weblogic.management.deploy.slave.SlaveDeployer.processPrepareTask(SlaveDeployer.java:820) at weblogic.management.deploy.slave.SlaveDeployer.prepareDelta(SlaveDeployer.java:536) at weblogic.management.deploy.slave.SlaveDeployer.prepareUpdate(SlaveDeployer.java:494) at weblogic.drs.internal.SlaveCallbackHandler$1.execute(SlaveCallbackHandler.java:25) at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:178) at weblogic.kernel.ExecuteThread.run(ExecuteThread

Answer 1

Hi, i am also facing the same problem.......
my ejb-jar.xml is
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE ejb-jar PUBLIC "-//Sun Microsystems, Inc.//DTD Enterprise JavaBeans 2.0//EN" "http://java.sun.com/dtd/ejb-jar_2_0.dtd">
<ejb-jar >
<description><![CDATA[No Description.]]></description>
<display-name>Generated by XDoclet</display-name>
<enterprise-beans>
<!-- Session Beans -->
<!--
To add session beans that you have deployment descriptor info for, add
a file to your XDoclet merge directory called session-beans.xml that contains
the <session></session> markup for those beans.
-->
<!-- Entity Beans -->
<entity >
<description><![CDATA[Description for Account]]></description>
<display-name>Name for Account</display-name>
<ejb-name>Account</ejb-name>
<home>com.app.j2ee.bmp.interfaces.AccountHome</home>
<remote>com.app.j2ee.bmp.interfaces.Account</remote>
<local-home>com.app.j2ee.bmp.interfaces.AccountLocalHome</local-home>
<local>com.app.j2ee.bmp.interfaces.AccountLocal</local>
<ejb-class>com.app.j2ee.bmp.ejb.AccountBean</ejb-class>
<persistence-type>Bean</persistence-type>
<prim-key-class>com.app.j2ee.bmp.interfaces.AccountPK</prim-key-class>
<reentrant>False</reentrant>
          <resource-ref>
          <res-ref-name>jdbc/ejbPool</res-ref-name>
          <res-type>javax.sql.DataSource</res-type>
          <res-auth>Container</res-auth>
          </resource-ref>
</entity>
</enterprise-beans>
<!-- Relationships -->
<!-- Assembly Descriptor -->
<!--
To specify your own assembly descriptor info here, add a file to your
XDoclet merge directory called assembly-descriptor.xml that contains
the <assembly-descriptor></assembly-descriptor> markup.
-->
<assembly-descriptor >
<!--
To specify additional security-role elements, add a file in the merge
directory called ejb-security-roles.xml that contains them.
-->
<!-- method permissions -->
<!--
To specify additional method-permission elements, add a file in the merge
directory called ejb-method-permissions.ent that contains them.
-->
<!-- transactions -->
<!--
To specify additional container-transaction elements, add a file in the merge
directory called ejb-container-transactions.ent that contains them.
-->
<!-- finder transactions -->
<!-- message destinations -->
<!--
To specify additional message-destination elements, add a file in the merge
directory called ejb-message-destinations.ent that contains them.
-->
<!-- exclude list -->
<!--
To specify an exclude-list element, add a file in the merge directory
called ejb-exclude-list.xml that contains it.
-->
<container-transaction>
          <method>
          <ejb-name>Account</ejb-name>
          <method-intf>Local</method-intf>
          <method-name>*</method-name>
          </method>
          <method>
          <ejb-name>Account</ejb-name>
          <method-intf>Remote</method-intf>
          <method-name>*</method-name>
          </method>
          <trans-attribute>Required</trans-attribute>
     </container-transaction>
</assembly-descriptor>
</ejb-jar>