I forgot to check catalina.out with the new tomcat. It showed:
Feb 10, 2010 1:54:28 PM org.apache.catalina.loader.WebappClassLoader
clearReferencesThreads
SEVERE: A web application appears to have started a thread named [Timer-0] but
has failed to stop it. This is very likely to create a memory leak.
and when I use jstack it looks like it is really there:
"Timer-0" daemon prio=10 tid=0x8b16b400 nid=0x43b1 in Object.wait() [0x8b2e0000]
java.lang.Thread.State: TIMED_WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0xac502370> (a java.util.TaskQueue)
at java.util.TimerThread.mainLoop(Timer.java:509)
- locked <0xac502370> (a java.util.TaskQueue)
at java.util.TimerThread.run(Timer.java:462)
Mark Shifman wrote:
>
> Mark Thomas wrote:
>> On 10/02/2010 16:05, Mark Shifman wrote:
>>> I have a webapp that unmarshalls xmls prior to storing in my database.
>>>
>>> I have recently noted that after a redeploy, the unmarshalling of a
>>> dateTime element is null while
>>> the rest of the elements in my object seem to be unmarshalled fine. If I
>>> restart tomcat things
>>> seem to work again.
>>>
>>> I created the classes for unmarshalling using the typical xjc stuff.
>>>
>>> The webapp is running via struts 1.3.10 with tomcat 6.0.18, java version
>>> "1.6.0_07". It is running
>>> on linux 2.6.18-92.1.22.el5 via CentOS release 5.3 (Final).
>>>
>>> I found one item on google where similar behavior occurred but there was no
>>> resolution.
>>>
>>> Is this a known problem with jaxb unmarshalling that doesn't happen with
>>> newer versions of java?(I think
>>> jaxb2 is the one in java 1.6)
>>>
>>> Is there something obvious I didn't close that could be leaking?
>> Possibly, but it certainly won't be obvious.
>>
>> Try updating to 6.0.24 and the latest JDK. There were some XML related
>> leaks in the JDK that 6.0.24 provides work-arounds for.
>
> I just tried with jdk1.6.0_18 (newest from sun) and tomcat 6.0.24 and it
> didn't help.
> I am now sure what I should try now. arggggg
>
> mas
>
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--
Mark Shifman MD. Ph.D.
Yale Center for Medical Informatics
Phone (203)737-5219
mark.shif...@yale.edu
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