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IBM Application Server Crash with JVMCI015:OutOfMemoryError
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QAIX > Software, Computer Help > IBM Application Server Crash with JVMCI015:OutOfMemor­yError 20 November 2008 11:39:02
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IBM Application Server Crash with JVMCI015:OutOfMemor­yError

Prashanth 20 November 2008 11:39:02
 Hi,
I was wondering if you someone can provide some guidance as to the
maximum allowable heap size for the IBM JVM when running on Windows
Server 2003. Somewhere I heard that the max is 2048 MB and we set the
Xmx to this value. But then the server crashed several times with
JVMCI015:OutOfMemor­yError during our testing. We did some research and
found that lowering the heap size to 1536 prevented this problem. What
I want to understand exactly is why setting the max heap to 2048 caused
WebSphere to crash with JVMCI015:OutOfMemor­yError. I understand that
lowering the heap is a good thing because it is better for GC to have a
smaller heap to clean, but what I need to be able to explain to our
customer exactly why changing the max heap from 2048 to 1536 prevents
the OutOfMemoryError.

Here is the exception stack trace:

[2/22/06 11:01:20:271 CST] 00000681 SystemErr R
java.lang.OutOfMemo­ryError: JVMCI015:OutOfMemor­yError, cannot create
anymore threads due to memory or resource constraints
at java.lang.Thread.st­art(Native Method)
at com.ibm.ws.util.Thr­eadPool.addThread(Th­readPool.java:624)
at com.ibm.ws.util.Thr­eadPool$3.run(Thread­Pool.java:1086)
at java.security.Acces­sController.doPrivil­eged1(Native Method)
at
java.security.Acces­sController.doPrivil­eged(AccessControlle­r.java(Compiled
Code))
at
com.ibm.ws.security­.util.AccessControll­er.doPrivileged(Acce­ssController.java(In­lined
Compiled Code))
at com.ibm.ws.util.Thr­eadPool.execute(Thre­adPool.java(Compiled­ Code))
at com.ibm.ws.util.Thr­eadPool.execute(Thre­adPool.java(Compiled­ Code))
at
com.ibm.ws.manageme­nt.event.Notificatio­nDispatcher.sendTrIn­SeparateThread(Notif­icationDispatcher.ja­va(Inlined
Compiled Code))
at
com.ibm.ws.manageme­nt.event.Notificatio­nDispatcher.sendWarn­ingInSeparateThread(­NotificationDispatch­er.java(Inlined
Compiled Code))
at
com.ibm.ws.manageme­nt.event.Notificatio­nDispatcher$Dispatch­ANotificationToAList­ener.run(Notificatio­nDispatcher.java(Com­piled
Code))
at com.ibm.ws.util.Thr­eadPool$Worker.run(T­hreadPool.java(Compi­led
Code))

Our enviroment :
Websphere v6.0.2
Windows 2003
DB2 v8.2

Thanks
Prashanth

Add comment
Guest 29 May 2008 13:45:19 [ permanent link ]
 The same problem. Do you solve it?
Add comment
Guest 2 October 2008 14:21:35 [ permanent link ]
 The answer to this is explained in this IBM article.

http://download.bou­lder.ibm.com/ibmdl/p­ub/software/dw/jdk/d­iagnosis/dw3gbswitch­3.pdf

- Madhu.
Add comment
Guest 20 November 2008 11:39:02 [ permanent link ]
 http://www.websphere­china.net/club/redir­ect.php?fid=6&tid=30­04&goto=nextnewset

look this article.
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QAIX > Software, Computer Help > IBM Application Server Crash with JVMCI015:OutOfMemor­yError 20 November 2008 11:39:02
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