求助 weblogic报错 <BEA-080003>

<2012-8-24 下午12时48分05秒 CST> <Warning> <RMI> <BEA-080003> <RuntimeException thrown by rmi server: javax.management.remote.rmi.RMIConnectionImpl.getAttribute(Ljavax.management.ObjectName;Ljava.lang.String;Ljavax.security.auth.Subject;)
 java.lang.NullPointerException.
java.lang.NullPointerException
at weblogic.management.mbeanservers.domainruntime.internal.FederatedMBeanServerInterceptor.lookupMBeanServer(FederatedMBeanServerInterceptor.java:44)
at weblogic.management.mbeanservers.domainruntime.internal.FederatedMBeanServerInterceptor.lookupMBeanServerRequired(FederatedMBeanServerInterceptor.java:63)
at weblogic.management.mbeanservers.domainruntime.internal.FederatedMBeanServerInterceptor.getAttribute(FederatedMBeanServerInterceptor.java:227)
at weblogic.management.jmx.mbeanserver.WLSMBeanServerInterceptorBase$12.run(WLSMBeanServerInterceptorBase.java:320)
at java.security.AccessController.doPrivileged(AccessController.java:246)


生产环境weblogic后台这个报错每隔半个小时就出现一次，这个跟客户端调用我们的服务超时有关系吗？求大神解惑！！！ --------------------编程问答-------------------- 设置一下weblogic的域信任
登陆weblogic主页-->domain-->安全

补充：Java ,  Java EE