title: Unable to deploy EJB on weblogic server
body: <p>I have a web application(Java EE, Struts 1.1, JSP, Tomcat 5.5.20, WebLogic, Oracle) running on a Linux sever from Red Hat.
  I edit a table and add  some fields on it(database).Then I edit the reqiured files in Jbuilder7 .clean and make the related jar file and the last,clean  and make the ear file.the earfile is made without errors.But when I deploy earfile on weblogic server,the errors have occured as the followings*<em>(Unable to deploy EJB: markaz.jar from markaz.jar).</em>*
  Please guide me!what should I do?</p>
  
  <pre><code>at weblogic.ejb20.ejbc.EJBCompiler.doCompile(EJBCompi ler.java:249)
  at weblogic.ejb20.ejbc.EJBCompiler.compileEJB(EJBComp iler.java:344)
  at weblogic.ejb20.deployer.EJBDeployer.runEJBC(EJBDep loyer.java:489)
  at weblogic.ejb20.deployer.EJBDeployer.compileEJB(EJB Deployer.java:819)
  at weblogic.ejb20.deployer.EJBDeployer.prepare(EJBDep loyer.java:1268)
  at weblogic.ejb20.deployer.EJBModule.prepare(EJBModul e.java:232)
  at weblogic.j2ee.J2EEApplicationContainer.prepareModu le(J2EEApplicationContainer.java:1570)
  at weblogic.j2ee.J2EEApplicationContainer.prepare(J2E EApplicationContainer.java:737)
  at weblogic.j2ee.J2EEApplicationContainer.prepare(J2E EApplicationContainer.java:555)
  at weblogic.j2ee.J2EEApplicationContainer.prepare(J2E EApplicationContainer.java:458)
  at weblogic.management.deploy.slave.SlaveDeployer.pre pareAllStagedApplications(SlaveDeployer.java:490)
  at weblogic.management.deploy.slave.SlaveDeployer.ini tialize(SlaveDeployer.java:253)
  at weblogic.management.deploy.DeploymentManagerServer LifeCycleImpl.initialize(DeploymentManagerServerLi feCycleImpl.java:150)
  at weblogic.t3.srvr.ServerLifeCycleList.initialize(Se rverLifeCycleList.java:54)
  at weblogic.t3.srvr.T3Srvr.initialize1(T3Srvr.java:78 2)
  at weblogic.t3.srvr.T3Srvr.initialize(T3Srvr.java:594 )
  at weblogic.t3.srvr.T3Srvr.run(T3Srvr.java:282)
  at weblogic.Server.main(Server.java:32)
  
  }.
  weblogic.management.ApplicationException: Prepare failed. Task Id = null
  {
  Module Name: markaz.jar, Error: Exception preparing module: EJBModule(markaz.jar,status=NEW)
  </code></pre>
  
  <p>Unable to deploy EJB: markaz.jar from markaz.jar</p>