问等待同一锁的16个线程

EN

我在glassfish 3服务器上遇到了问题。日志正在抛出消息

java.util.concurrent.RejectedExecutionException:线程池的任务队列已满，限制: 256

我做了几个线程转储，发现有16个线程在等待同一个锁，例如：

“__ejb- java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2043) - nid=0x1c08”守护进程线程池等待条件0x3297f000 java.lang.Thread.State:正在等待(暂留) at sun.misc.Unsafe.park(本地方法)-暂留以等待池(位于java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2043) at java.util.concurrent.LinkedBlockingQueue.take(的java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2043)处的java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1068) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:724)

锁定的可拥有同步器：-无

“__ejb- java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2043) - nid=0x1a3c 2”守护进程线程池等待条件0x3ad3f000 java.lang.Thread.State: WAITING ( parking ) at sun.misc.Unsafe.park(本地方法)-parking to wait <0x117b2cb0> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject) at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186) at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2043) at java.util.concurrent.LinkedBlockingQueue.take( )java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1068) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:724)

已锁定的可拥有同步器：-无...

这是正常的吗？我以为我会在线程转储中找到拥有锁的线程，但没有。请帮帮忙。我是线程分析的新手。