myEclipse+weblogic部署ejb

Question

各位大侠,在myeclipse中部署ejb时候出现如下异常(weblogic已经启动)
weblogic.management.DeploymentException: [Deployer:149189]Attempt to operate 'deploy' on null BasicDeploymentMBean for deployment _appsdir_Hello_jar. Operation can not be performed until server is restarted.
at weblogic.deploy.internal.targetserver.DeploymentManager.assertDeploymentMBeanIsNonNull(DeploymentManager.java:1281)
at weblogic.deploy.internal.targetserver.DeploymentManager.findDeploymentMBean(DeploymentManager.java:1322)
at weblogic.deploy.internal.targetserver.DeploymentManager.createOperation(DeploymentManager.java:1022)
at weblogic.deploy.internal.targetserver.DeploymentManager.createOperations(DeploymentManager.java:1368)
at weblogic.deploy.internal.targetserver.DeploymentManager.handleUpdateDeploymentContext(DeploymentManager.java:160)
Truncated. see log file for complete stacktrace>
不知道是什么问题,求教