FS Cache Ref queue issue

I have an issue with object.wait and reference queue lock issue. The web logic server thread hung up and indicate "local Variable unavailable". From thread dump, it appears it is waiting for a cache reference queue lock. Any one can give some direction how to further debug on the case. Here is the exception of the dump thread:
Full thread dump Java HotSpot(TM) Server VM (1.5.0_04-b05 mixed mode):
"FSCacheRefQueueThread" daemon prio=2 tid=0x2c848738 nid=0x16c4 in Object.wait() [0x3016f000..0x3016fd9
at java.lang.Object.wait(Native Method)
- waiting on <0x09a6c8d0> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:116)
- locked <0x09a6c8d0> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:132)
at workshop.util.filesystem.FSCache$FSCacheRefQueueThread.run(FSCache.java:65)
"AgentConfigMonitor" daemon prio=2 tid=0x2c658800 nid=0x13c0 waiting on condition [0x3012f000..0x3012fa
at java.lang.Thread.sleep(Native Method)
at com.sun.identity.agents.arch.AgentConfiguration$ConfigurationMonitor.run(Unknown Source)
at java.lang.Thread.run(Thread.java:595)
"LDAPConnThread-6 ldap://devldap.usarec.army.mil:389" daemon prio=5 tid=0x2c5d53e8 nid=0x123c runnable
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.read(SocketInputStream.java:129)
at java.io.BufferedInputStream.fill(BufferedInputStream.java:218)
at java.io.BufferedInputStream.read(BufferedInputStream.java:235)
- locked <0x09cb2878> (a java.io.BufferedInputStream)
at netscape.ldap.ber.stream.BERElement.getElement(BERElement.java:101)
at netscape.ldap.LDAPConnThread.run(LDAPConnThread.java:538)
at java.lang.Thread.run(Thread.java:595)
"LDAPConnThread-5 ldap://devldap.usarec.army.mil:389" daemon prio=5 tid=0x2d4471d8 nid=0x13f0 runnable
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.read(SocketInputStream.java:129)
at java.io.BufferedInputStream.fill(BufferedInputStream.java:218)
at java.io.BufferedInputStream.read(BufferedInputStream.java:235)
- locked <0x09cb4958> (a java.io.BufferedInputStream)
at netscape.ldap.ber.stream.BERElement.getElement(BERElement.java:101)
at netscape.ldap.LDAPConnThread.run(LDAPConnThread.java:538)
at java.lang.Thread.run(Thread.java:595)
"Thread-19" daemon prio=5 tid=0x2c381b70 nid=0x173c waiting on condition [0x3002f000..0x3002fd18]
at java.lang.Thread.sleep(Native Method)
It is web logic 9.2.
Any work around? Is that a dead lock?
Thanks!

The root cause seems to be caused by
workshop.util.filesystem.FSCache$FSCacheRefQueueThread.
Are you running this application from within WebLogic Workshop?
Can you see if you can deploy externally to workshop?

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Attachments:
1.png ‏19 KB

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Message Edited by TonP on 07-26-2007 01:20 PM
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