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thread dump shows one object locked by three threads

edited Jun 3, 2013 5:13AM in Oracle Weblogic Server (MOSC) 1 commentAnswered ✓
Hi Experts,
version: Oracle JDK 7u17

It is very strange that there are 3 threads are showing "locked <0x00000004929ebab8> (a java.lang.Object)"
"pool-3-daemon-thread-510"
"[ACTIVE] ExecuteThread: '209' for queue: 'weblogic.kernel.Default (self-tuning)'"
"[ACTIVE] ExecuteThread: '184' for queue: 'weblogic.kernel.Default (self-tuning)'"

Please refer to attached file.  I'm confused because my understanding is that one object should be only owned by one particular thread at a time.
Can you help explain why ?

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