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javax.resource.ResourceException: java.lang.NullPointerException	at weblogic.connector.common.internal.XATransResourceFactory.enListResource(XATransResourceFactory.java:281)	at weblogic.connector.common.internal.XATransResourceFactory.createConnection(XATransResourceFactory.java:230)	at weblogic.connector.common.internal.ConnectionPool.createConnection(ConnectionPool.java:1490)	at weblogic.connector.common.internal.ConnectionPool.getConnection(ConnectionPool.java:1903)	at weblogic.connector.common.internal.ConnectionPoolManager.getConnection(ConnectionPoolManager.java:163)	at weblogic.connector.common.internal.ConnectionManagerImpl.allocateConnection(ConnectionManagerImpl.java:25)	at com.entragroup.vcs.fm.connector.VcsConnectionFactory.getConnection(UnknownSource)	at com.entragroup.xsm.ejb.PrivateCustomerBean.ejbFindByPrimaryKey(UnknownSource)	at com.entragroup.xsm.ejb.PrivateCustomerBean_372kzo_Impl.ejbFindByPrimaryKey(PrivateCustomerBean_372kzo_Impl.java:152)	at java.lang.reflect.Method.invoke(Native Method)	at weblogic.ejb20.manager.BeanManagedPersistenceManager.findByPrimaryKey(BeanManagedPersistenceManager.java:35)	at weblogic.ejb20.manager.BaseEntityManager.findByPrimaryKey(BaseEntityManager.java:486)	at weblogic.ejb20.manager.BaseEntityManager.localFindByPrimaryKey(BaseEntityManager.java:433)	at weblogic.ejb20.internal.EntityEJBLocalHome.findByPrimaryKey(EntityEJBLocalHome.java:275)	at com.entragroup.xsm.ejb.PrivateCustomerBean_372kzo_LocalHomeImpl.findByPrimaryKey(PrivateCustomerBean_372kzo_LocalHomeImpl.java:62)	at com.entragroup.xsm.test.ManagerBean.getCustomerImpl(Unknown Source)	at com.entragroup.xsm.test.ManagerBean.stress(Unknown Source)	at com.entragroup.xsm.test.ManagerBean_379jf4_EOImpl.stress(ManagerBean_379jf4_EOImpl.java:99)	at com.entragroup.xsm.test.ManagerBean_379jf4_EOImpl_WLSkel.invoke(UnknownSource)	at weblogic.rmi.internal.activation.ActivatableServerRef.invoke(ActivatableServerRef.java:87)	at weblogic.rmi.internal.BasicServerRef$1.run(BasicServerRef.java:313)	at weblogic.security.service.SecurityServiceManager.runAs(SecurityServiceManager.java:762)	at weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.java:308)	at weblogic.rmi.internal.BasicExecuteRequest.execute(BasicExecuteRequest.java:30)	at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:152)	at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:133)