Yep there are other *JPA* used by jbpm / drools. I have put hibernate-jpaxx.jar in the lib folder because of which we are getting classcastexception. If i remove that and leave alone then the error is as follows
2012-01-26 10:39:26,505 INFO [org.hibernate.cfg.annotations.Version] (main) Hibernate Annotations 3.4.0.GA_CP01
2012-01-26 10:39:26,526 INFO [org.hibernate.cfg.Environment] (main) Hibernate 3.3.2.GA_CP03
2012-01-26 10:39:26,529 INFO [org.hibernate.cfg.Environment] (main) hibernate.properties not found
2012-01-26 10:39:26,534 INFO [org.hibernate.cfg.Environment] (main) Bytecode provider name : javassist
2012-01-26 10:39:26,540 INFO [org.hibernate.cfg.Environment] (main) using JDK 1.4 java.sql.Timestamp handling
2012-01-26 10:39:26,668 INFO [org.hibernate.annotations.common.Version] (main) Hibernate Commons Annotations 3.1.0.GA
2012-01-26 10:39:26,673 INFO [org.hibernate.ejb.Version] (main) Hibernate EntityManager [WORKING]
2012-01-26 10:39:26,788 INFO [STDOUT] (main) 1 26/01 10:39:26,784[main] ERROR emirates.sds.wf.error - [CWorkflowDesignerMBean] method : initWFMinaTaskServer:No Persistence provider for EntityManager named org.jbpm.task trace : javax.persistence.PersistenceException: No Persistence provider for EntityManager named org.jbpm.task
2012-01-26 10:39:26,789 ERROR [STDERR] (main) javax.persistence.PersistenceException: No Persistence provider for EntityManager named org.jbpm.task
2012-01-26 10:39:26,789 ERROR [STDERR] (main) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:56)
2012-01-26 10:39:26,789 ERROR [STDERR] (main) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:34)
2012-01-26 10:39:26,789 ERROR [STDERR] (main) at com.emirates.sds.workflow.mbean.WFServerStartupMBean.initWFMinaTaskServer(Unknown Source)
2012-01-26 10:39:26,790 ERROR [STDERR] (main) at com.emirates.sds.workflow.mbean.WFServerStartupMBean.<init>(Unknown Source)
2012-01-26 10:39:26,790 ERROR [STDERR] (main) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
2012-01-26 10:39:26,790 ERROR [STDERR] (main) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
2012-01-26 10:39:26,790 ERROR [STDERR] (main) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
2012-01-26 10:39:26,790 ERROR [STDERR] (main) at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
2012-01-26 10:39:26,790 ERROR [STDERR] (main) at java.lang.Class.newInstance0(Class.java:355)
2012-01-26 10:39:26,790 ERROR [STDERR] (main) at java.lang.Class.newInstance(Class.java:308)
2012-01-26 10:39:26,790 ERROR [STDERR] (main) at com.sun.faces.mgbean.BeanBuilder.newBeanInstance(BeanBuilder.java:184)
2012-01-26 10:39:26,790 ERROR [STDERR] (main) at com.sun.faces.mgbean.BeanBuilder.build(BeanBuilder.java:98)
2012-01-26 10:39:26,791 ERROR [STDERR] (main) at com.sun.faces.mgbean.BeanManager.createAndPush(BeanManager.java:405)
2012-01-26 10:39:26,791 ERROR [STDERR] (main) at com.sun.faces.mgbean.BeanManager.create(BeanManager.java:265)
2012-01-26 10:39:26,791 ERROR [STDERR] (main) at com.sun.faces.mgbean.BeanManager.create(BeanManager.java:252)
2012-01-26 10:39:26,791 ERROR [STDERR] (main) at com.sun.faces.config.ConfigureListener.contextInitialized(ConfigureListener.java:250)
2012-01-26 10:39:26,791 ERROR [STDERR] (main) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3910)
2012-01-26 10:39:26,791 ERROR [STDERR] (main) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4389)
2012-01-26 10:39:26,791 ERROR [STDERR] (main) at org.jboss.web.tomcat.service.deployers.TomcatDeployment.performDeployInternal(TomcatDeployment.java:321)
2012-01-26 10:39:26,791 ERROR [STDERR] (main) at org.jboss.web.tomcat.service.deployers.TomcatDeployment.performDeploy(TomcatDeployment.java:145)
2012-01-26 10:39:26,791 ERROR [STDERR] (main) at org.jboss.web.deployers.AbstractWarDeployment.start(AbstractWarDeployment.java:461)
2012-01-26 10:39:26,792 ERROR [STDERR] (main) at org.jboss.web.deployers.WebModule.startModule(WebModule.java:118)
2012-01-26 10:39:26,792 ERROR [STDERR] (main) at org.jboss.web.deployers.WebModule.start(WebModule.java:97)
2012-01-26 10:39:26,792 ERROR [STDERR] (main) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
2012-01-26 10:39:26,792 ERROR [STDERR] (main) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
2012-01-26 10:39:26,792 ERROR [STDERR] (main) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
2012-01-26 10:39:26,792 ERROR [STDERR] (main) at java.lang.reflect.Method.invoke(Method.java:597)
2012-01-26 10:39:26,792 ERROR [STDERR] (main) at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:157)
2012-01-26 10:39:26,792 ERROR [STDERR] (main) at org.jboss.mx.server.Invocation.dispatch(Invocation.java:96)
2012-01-26 10:39:26,792 ERROR [STDERR] (main) at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
2012-01-26 10:39:26,793 ERROR [STDERR] (main) at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
2012-01-26 10:39:26,793 ERROR [STDERR] (main) at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:668)
2012-01-26 10:39:26,793 ERROR [STDERR] (main) at org.jboss.system.microcontainer.ServiceProxy.invoke(ServiceProxy.java:206)
2012-01-26 10:39:26,793 ERROR [STDERR] (main) at $Proxy38.start(Unknown Source)
2012-01-26 10:39:26,793 ERROR [STDERR] (main) at org.jboss.system.microcontainer.StartStopLifecycleAction.installAction(StartStopLifecycleAction.java:42)
2012-01-26 10:39:26,793 ERROR [STDERR] (main) at org.jboss.system.microcontainer.StartStopLifecycleAction.installAction(StartStopLifecycleAction.java:37)
2012-01-26 10:39:26,793 ERROR [STDERR] (main) at org.jboss.dependency.plugins.action.SimpleControllerContextAction.simpleInstallAction(SimpleControllerContextAction.java:62)
2012-01-26 10:39:26,793 ERROR [STDERR] (main) at org.jboss.dependency.plugins.action.AccessControllerContextAction.install(AccessControllerContextAction.java:71)
2012-01-26 10:39:26,793 ERROR [STDERR] (main) at org.jboss.dependency.plugins.AbstractControllerContextActions.install(AbstractControllerContextActions.java:51)
2012-01-26 10:39:26,794 ERROR [STDERR] (main) at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)
2012-01-26 10:39:26,794 ERROR [STDERR] (main) at org.jboss.system.microcontainer.ServiceControllerContext.install(ServiceControllerContext.java:297)
2012-01-26 10:39:26,794 ERROR [STDERR] (main) at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1652)
2012-01-26 10:39:26,794 ERROR [STDERR] (main) at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:938)
2012-01-26 10:39:26,794 ERROR [STDERR] (main) at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1082)
2012-01-26 10:39:26,794 ERROR [STDERR] (main) at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:988)
2012-01-26 10:39:26,794 ERROR [STDERR] (main) at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:826)
2012-01-26 10:39:26,794 ERROR [STDERR] (main) at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:556)
2012-01-26 10:39:26,794 ERROR [STDERR] (main) at org.jboss.system.ServiceController.doChange(ServiceController.java:688)
2012-01-26 10:39:26,795 ERROR [STDERR] (main) at org.jboss.system.ServiceController.start(ServiceController.java:460)
2012-01-26 10:39:26,795 ERROR [STDERR] (main) at org.jboss.system.deployers.ServiceDeployer.start(ServiceDeployer.java:163)
2012-01-26 10:39:26,795 ERROR [STDERR] (main) at org.jboss.system.deployers.ServiceDeployer.deploy(ServiceDeployer.java:99)
2012-01-26 10:39:26,795 ERROR [STDERR] (main) at org.jboss.system.deployers.ServiceDeployer.deploy(ServiceDeployer.java:46)
2012-01-26 10:39:26,795 ERROR [STDERR] (main) at org.jboss.deployers.spi.deployer.helpers.AbstractSimpleRealDeployer.internalDeploy(AbstractSimpleRealDeployer.java:62)
2012-01-26 10:39:26,795 ERROR [STDERR] (main) at org.jboss.deployers.spi.deployer.helpers.AbstractRealDeployer.deploy(AbstractRealDeployer.java:55)
2012-01-26 10:39:26,795 ERROR [STDERR] (main) at org.jboss.deployers.plugins.deployers.DeployerWrapper.deploy(DeployerWrapper.java:179)
2012-01-26 10:39:26,795 ERROR [STDERR] (main) at org.jboss.deployers.plugins.deployers.DeployersImpl.doDeploy(DeployersImpl.java:1454)
2012-01-26 10:39:26,795 ERROR [STDERR] (main) at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1172)
2012-01-26 10:39:26,796 ERROR [STDERR] (main) at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1193)
2012-01-26 10:39:26,796 ERROR [STDERR] (main) at org.jboss.deployers.plugins.deployers.DeployersImpl.install(DeployersImpl.java:1113)
2012-01-26 10:39:26,796 ERROR [STDERR] (main) at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)
2012-01-26 10:39:26,796 ERROR [STDERR] (main) at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1652)
2012-01-26 10:39:26,796 ERROR [STDERR] (main) at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:938)
2012-01-26 10:39:26,796 ERROR [STDERR] (main) at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1082)
2012-01-26 10:39:26,796 ERROR [STDERR] (main) at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:988)
2012-01-26 10:39:26,796 ERROR [STDERR] (main) at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:826)
2012-01-26 10:39:26,796 ERROR [STDERR] (main) at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:556)
2012-01-26 10:39:26,797 ERROR [STDERR] (main) at org.jboss.deployers.plugins.deployers.DeployersImpl.process(DeployersImpl.java:789)
2012-01-26 10:39:26,797 ERROR [STDERR] (main) at org.jboss.deployers.plugins.main.MainDeployerImpl.process(MainDeployerImpl.java:699)
2012-01-26 10:39:26,797 ERROR [STDERR] (main) at org.jboss.system.server.profileservice.repository.MainDeployerAdapter.process(MainDeployerAdapter.java:117)
2012-01-26 10:39:26,797 ERROR [STDERR] (main) at org.jboss.system.server.profileservice.repository.ProfileDeployAction.install(ProfileDeployAction.java:70)
2012-01-26 10:39:26,797 ERROR [STDERR] (main) at org.jboss.system.server.profileservice.repository.AbstractProfileAction.install(AbstractProfileAction.java:53)
2012-01-26 10:39:26,797 ERROR [STDERR] (main) at org.jboss.system.server.profileservice.repository.AbstractProfileService.install(AbstractProfileService.java:403)
2012-01-26 10:39:26,797 ERROR [STDERR] (main) at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)
2012-01-26 10:39:26,797 ERROR [STDERR] (main) at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1652)
2012-01-26 10:39:26,797 ERROR [STDERR] (main) at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:938)
2012-01-26 10:39:26,798 ERROR [STDERR] (main) at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1082)
2012-01-26 10:39:26,798 ERROR [STDERR] (main) at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:988)
2012-01-26 10:39:26,798 ERROR [STDERR] (main) at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:778)
2012-01-26 10:39:26,798 ERROR [STDERR] (main) at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:543)
2012-01-26 10:39:26,798 ERROR [STDERR] (main) at org.jboss.system.server.profileservice.repository.AbstractProfileService.registerProfile(AbstractProfileService.java:308)
2012-01-26 10:39:26,798 ERROR [STDERR] (main) at org.jboss.system.server.profileservice.ProfileServiceBootstrap.start(ProfileServiceBootstrap.java:256)
2012-01-26 10:39:26,798 ERROR [STDERR] (main) at org.jboss.bootstrap.AbstractServerImpl.start(AbstractServerImpl.java:461)
2012-01-26 10:39:26,798 ERROR [STDERR] (main) at org.jboss.Main.boot(Main.java:221)
2012-01-26 10:39:26,799 ERROR [STDERR] (main) at org.jboss.Main$1.run(Main.java:556)
2012-01-26 10:39:26,799 ERROR [STDERR] (main) at java.lang.Thread.run(Thread.java:662)
2012-01-26 10:39:27,540 INFO [STDOUT] (main) 756 26/01 10:39:27,539[main] ERROR emirates.sds.wf.error - [CWorkflowDesignerMBean] method : initKnowledgeAgentResourceScanner:could not load [com/emirates/sds/workflow/resources/jbpmConsole.properties] as a classloader resource trace : java.lang.IllegalArgumentException: could not load [com/emirates/sds/workflow/resources/jbpmConsole.properties] as a classloader resource
2012-01-26 10:39:27,541 ERROR [STDERR] (main) java.lang.IllegalArgumentException: could not load [com/emirates/sds/workflow/resources/jbpmConsole.properties] as a classloader resource
2012-01-26 10:39:27,541 ERROR [STDERR] (main) at com.emirates.sds.workflow.util.PropUtils.loadProperties(Unknown Source)
2012-01-26 10:39:27,541 ERROR [STDERR] (main) at com.emirates.sds.workflow.util.PropUtils.loadProperties(Unknown Source)
2012-01-26 10:39:27,541 ERROR [STDERR] (main) at com.emirates.sds.workflow.mbean.WFServerStartupMBean.initKnowledgeAgentResourceScanner(Unknown Source)
2012-01-26 10:39:27,541 ERROR [STDERR] (main) at com.emirates.sds.workflow.mbean.WFServerStartupMBean.<init>(Unknown Source)
2012-01-26 10:39:27,541 ERROR [STDERR] (main) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)