Thx,
I hope this information helps: (The
org.apache.commons.pool.impl.GenericObjectPool starts a timer ... )
ava.util.TimerThread @ 0xc0772288
|Timer-0| 128 | 384
|org.apache.catalina.loader.WebappClassLoader @ 0xc04bed30|true
|- at java.lang.Object.wait(J)V (Native Method)
| | | |
|
|- at java.util.TimerThread.mainLoop()V (Timer.java:552)
| | | |
|
|- at java.util.TimerThread.run()V (Timer.java:505)
| | | |
|
| '- <local> java.util.TimerThread @ 0xc0772288 Timer-0 Thread
| | 128 | 384 |
|
| |- <class> class java.util.TimerThread @ 0xc0cd5080 System Class
| | 0 | 0 |
|
| |- group java.lang.ThreadGroup @ 0xc048b400 main
| | 48 | 208 |
|
| |- contextClassLoader org.apache.catalina.loader.WebappClassLoader @
0xc04bed30 | | 200 | 1.314.384 |
|
| |- <Java Local>, queue java.util.TaskQueue @ 0xc0758a80 Busy Monitor
| | 24 | 1.528 |
|
| |- <Java Local> java.util.TimerThread @ 0xc0772288 Timer-0 Thread
| | 128 | 384 |
|
| |- name char[7] @ 0xc0772408 Timer-0
| | 32 | 32 |
|
| |- inheritedAccessControlContext java.security.AccessControlContext @
0xc0772428 | | 40 | 104 |
|
| |- inheritableThreadLocals java.lang.ThreadLocal$ThreadLocalMap @
0xc0772490 | | 24 | 104 |
|
| |- blockerLock java.lang.Object @ 0xc07724f8
| | 16 | 16 |
|
| |- <Java Local> org.apache.commons.pool.impl.GenericObjectPool$Evictor @
0xeefe76d0| | 40 | 40 |
|
| |- <Java Local> java.lang.Object @ 0xeefe76f8
| | 16 | 16 |
|
| '- Total: 11 entries
| | | |
|
'- Total: 3 entries
| | | |
|
--------------------------------------------------------------------------------------------------------------------------------------------
The stacktrace shows only:
Timer-1
at java.lang.Object.wait(J)V (Native Method)
at java.util.TimerThread.mainLoop()V (Timer.java:552)
at java.util.TimerThread.run()V (Timer.java:505)
Thx, Simone
-----Ursprüngliche Nachricht-----
Von: André Warnier (tomcat) [mailto:a...@ice-sa.com]
Gesendet: Donnerstag, 29. Oktober 2015 09:17
An: users@tomcat.apache.org
Betreff: Re: AW: AW: Tomcat 6, DB2 Driver Problems
On 29.10.2015 09:09, simone.rodenbach....@devk.de wrote:
> Hi Christopher,
>
> I attachted some pictures of the threads.
>
> Thx,
> Simone
>
Hi Simone.
Christopher is in the USA, so it will take some time before he responds.
For the sake of gaining some time however : your attachments did not make it to
the list,
which strips most attachments.
Better : use a text editor to cut and paste the stack trace right here :
>
>
> -----Ursprüngliche Nachricht-----
> Von: Christopher Schultz [mailto:ch...@christopherschultz.net]
> Gesendet: Mittwoch, 28. Oktober 2015 15:30
> An: Tomcat Users List
> Betreff: Re: AW: Tomcat 6, DB2 Driver Problems
>
> Simone,
>
> On 10/28/15 4:02 AM, simone.rodenbach....@devk.de wrote:
>> I tried to google for the driver and classloader and found nothing that
>> helped me :-(
>
>> I can only provide you with this information:
>>
>> I configured the datasource in the context.xml
>>
>> <Resource name="jdbc/xxx" auth="Container" type="javax.sql.DataSource"
>> factory="org.apache.commons.dbcp.BasicDataSourceFactory"
>
> Why are you overriding Tomcat's default DataSourceFactory with another one?
>
>> maxActive="10" minIdle="2" maxIdle="10" maxWait="10000"
>> minEvictableIdleTimeMillis="120000" timeBetweenEvictionRunsMillis="60000"
>> username="xxx"
>> password="xxx"
>> driverClassName="com.ibm.db2.jcc.DB2Driver"
>> url="xxx;"
>> validationQuery="select 1 from sysibm.sysdummy1" />
>>
>>
>> The spring bean
>>
>> <jee:jndi-lookup id="dataSource" jndi-name="java:/comp/env/jdbc/xxx"
>> expected-type="javax.sql.DataSource" />
>>
>> I created a test project. Because oft hat I'm sure that I don't start a
>> thread.
>
> It doesn't have to be *your code* starting the thread directly. JDBC
> drivers have a habit of launching their own cleanup threads and then not
> offering any interface to stop them.
>
>> But the log says:
>>
>> Okt 28, 2015 8:41:15 AM org.apache.catalina.loader.WebappClassLoader
>> clearReferencesThreads
>> SCHWERWIEGEND: The web application [/test] appears to have started a thread
>> named [Timer-0] but has failed to stop it. This is very likely to create a
>> memory leak.
>>
>> I think this thread is started from
>> org.apache.commons.dbcp.BasicDataSourceFactory.
>
> Nope, BasicDataSourceFactory doesn't have the word "thread" anywhere in
> its code:
> http://svn.apache.org/viewvc/commons/proper/dbcp/tags/DBCP_1_4/src/java/org/apache/commons/dbcp/BasicDataSourceFactory.java?view=markup
>
>> I removed the db2cc4.jar to get an exception to inspect from where the
>> driver is loaded and got:
>>
>> Caused by: java.lang.ClassNotFoundException: com.ibm.db2.jcc.DB2Driver
>> at
>> org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1858)
>> at
>> org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1709)
>> at
>> org.apache.commons.dbcp.BasicDataSource.createConnectionFactory(BasicDataSource.java:1420)
>
> That only tells you where the driver is loaded. It doesn't tell you when
> the thread was launched.
>
> After shutting-down your web application (and getting the warning about
> the Timer-0 thread), can you take a thread dump and show us the stack
> trace for the Timer-0 thread?
>
> -chris
>
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Wichtiger Hinweis zum Schutz Ihrer Daten!
Der Schutz von Kundendaten ist uns ein wichtiges Anliegen. Aus diesem Grund hat
sich die DEVK freiwillig verpflichtet, die "Verhaltensregeln für den Umgang mit
personenbezogenen Daten durch die deutsche Versicherungswirtschaft" (Code of
Conduct) einzuhalten. Sie regeln die Erhebung, Verarbeitung und Nutzung von
personenbezogenen Daten. Den vollen Wortlaut des Code of Conduct finden Sie
unter www.devk.de/datenschutz.
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