Exception in Managed Server

Question

Can anyone let me know what could be the reason for the following exception.?We
have a clustered WLS 7.0 sp2 server with one admin and one managed server.Both
the servers are starting up properly.But when we run a test case from one system
to an other external system we are getting the following exception in Managed
Server.
Exception :
<Sep 10, 2003 6:40:52 PM BST> <Error> <B2B> <000000> <<Repository> ERROR: Error
getting a Connection from the DataSource "com.bea.wlpi.TXDataSource" in Repository
Session - SQLException: com.bea.wlpi.TXDataSource>
javax.transaction.TransactionRolledbackException: EJB Exception: : java.lang.NoClassDefFoundError
     at com.bea.eci.repository.helper.RepositoryActions.getAllEntities(Unknown Source)
     at com.bea.eci.repository.ejb.XMLRepositoryBean_u3eysh_EOImpl.getAllEntities(XMLRepositoryBean_u3eysh_EOImpl.java:475)
     at com.bt.wli.eai.NetworkBuild.HubStateHandler.cacheMappingDoc(HubStateHandler.java:121)
     at com.bt.wli.eai.NetworkBuild.HubStateHandler.checkExceptionalResponse(HubStateHandler.java:623)
     at java.lang.reflect.Method.invoke(Native Method)
     at com.bea.wlpi.common.ClassInvocationDescriptor.invokeMethod(Unknown Source)
     at com.bea.wlpi.server.workflow.action.ActionBusinessOperation.execute(Unknown
Source)
     at com.bea.wlpi.server.workflow.ErrorHandler.invoke(Unknown Source)
     at com.bea.wlpi.server.workflowprocessor.WorkflowProcessorBean.invokeErrorHandler(Unknown
Source)
     at com.bea.wlpi.server.workflowprocessor.WorkflowProcessorBean.invokeCurrentErrorHandler(Unknown
Source)
     at com.bea.wlpi.server.workflowprocessor.WorkflowProcessorBean.executeActions(Unknown
Source)
     at com.bea.wlpi.server.workflow.Task.executeActions(Unknown Source)
     at com.bea.wlpi.server.workflow.Task.activate(Unknown Source)
     at com.bea.wlpi.server.workflowprocessor.WorkflowProcessorBean.activateSuccessors(Unknown
Source)
     at com.bea.wlpi.server.workflow.Task.markDone(Unknown Source)
     at com.bea.wlpi.server.workflow.action.ActionTaskDone.execute(Unknown Source)
     at com.bea.wlpi.server.workflowprocessor.WorkflowProcessorBean.executeActions(Unknown
Source)
     at com.bea.wlpi.server.workflow.Task.executeActions(Unknown Source)
     at com.bea.wlpi.server.workflow.Task.activate(Unknown Source)
     at com.bea.wlpi.server.workflowprocessor.WorkflowProcessorBean.activateSuccessors(Unknown
Source)
     at com.bea.wlpi.server.workflow.Task.markDone(Unknown Source)
     at com.bea.wlpi.server.workflow.action.ActionTaskDone.execute(Unknown Source)
     at com.bea.wlpi.server.workflowprocessor.WorkflowProcessorBean.executeActions(Unknown
Source)
     at com.bea.wlpi.server.workflow.Task.executeActions(Unknown Source)
     at com.bea.wlpi.server.workflow.Task.activate(Unknown Source)
     at com.bea.wlpi.server.workflowprocessor.WorkflowProcessorBean.activateSuccessors(Unknown
Source)
     at com.bea.wlpi.server.workflow.Start.activate(Unknown Source)
     at com.bea.wlpi.server.workflow.Workflow.start(Unknown Source)
     at com.bea.wlpi.server.workflow.Workflow.instantiate(Unknown Source)
     at com.bea.wlpi.server.workflowprocessor.WorkflowProcessorBean$1.invoke(Unknown
Source)
     at com.bea.wlpi.server.workflowprocessor.WorkflowProcessorBean.performWithErrorHandling(Unknown
Source)
     at com.bea.wlpi.server.workflowprocessor.WorkflowProcessorBean.instantiate(Unknown
Source)
     at com.bea.wlpi.server.workflowprocessor.WorkflowProcessorBean_h7kt4j_EOImpl.instantiate(WorkflowProcessorBean_h7kt4j_EOImpl.java:1064)
     at com.bea.wlpi.server.eventprocessor.EventProcessor.checkTrigger(Unknown Source)
     at com.bea.wlpi.server.eventprocessor.EventProcessor.onEvent(Unknown Source)
     at com.bea.wlpi.server.eventlistener.EventListenerBean.onMessage(Unknown Source)
     at weblogic.ejb20.internal.MDListener.execute(MDListener.java:377)
     at weblogic.ejb20.internal.MDListener.transactionalOnMessage(MDListener.java:311)
     at weblogic.ejb20.internal.MDListener.onMessage(MDListener.java:286)
     at weblogic.jms.client.JMSSession.onMessage(JMSSession.java:2337)
     at weblogic.jms.client.JMSSession.execute(JMSSession.java:2256)
     at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:215)
     at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:191)
; nested exception is:
     java.lang.NoClassDefFoundError
Thanks and regds
Sudarsan M

Answer 1

Thanks for your reply, Timo, and John, the same file downloading is working fine with my Integrated weblogic server, but the same application when i deployed in my DEV server i am getting the error.
Code which i am trying to download file is
public void downloadCardInserts(FacesContext facesContext,
OutputStream outputStream) throws FileNotFoundException,
IOException {
// Add event code here...
UploadedFile filename=(UploadedFile)browseFile.getValue();
String fname=filename.getFilename();
String fname1="//bwi-wfp-v01/Apps/SCII/TEST/LOG/Cards/RENEWAL/"+fname;
System.out.println("file name11111:"+fname1);
FileInputStream in = new FileInputStream(new File(fname1));
byte[] buffer = new byte[1024];
int bytes = in.read(buffer);
while (bytes >= 0) {
outputStream.write(buffer, 0, bytes);
bytes = in.read(buffer);
}