偶尔出现 javax.ejb.AccessLocalException

Question

我正在使用 Glassfish 3.0.1。当尝试调用本地 EJB 时，我有时会遇到此错误：

[#|2010-11-10T19:17:25.014+0000|INFO|glassfish3.0.1|javax.enterprise.system.core.security|
_ThreadID=26;_ThreadName=Thread-1;|JACC Policy Provider: Failed Permission Check,
context(myApplication/myWarModule-1_0-SNAPSHOT_war_internal)- 
permission((javax.security.jacc.EJBMethodPermission MyEJB myMethod,Local,java.lang.Long))|#]

[#|2010-11-10T19:17:25.015+0000|WARNING|glassfish3.0.1|
javax.enterprise.system.container.ejb.com.sun.ejb.containers|_ThreadID=26;
_ThreadName=Thread-1;|A system exception occurred during an invocation on EJB 
MyEJB method public void com.example.MyEJB.myMethod(java.lang.Long)
javax.ejb.AccessLocalException: Client not authorized for this invocation.
    at com.sun.ejb.containers.BaseContainer.preInvoke(BaseContainer.java:1850)
    at com.sun.ejb.containers.EjbAsyncTask.call(EjbAsyncTask.java:95)
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
    at java.util.concurrent.FutureTask.run(FutureTask.java:138)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    at java.lang.Thread.run(Thread.java:619)

99% 的情况下，一切正常。但当发生这种情况时，每次尝试调用该 EJB 方法都会导致相同的错误。解决此问题的唯一方法是取消部署应用程序，然后重新部署。谁能告诉我发生了什么事吗？