如何解决内存泄漏问题？(How to solve memory leak problems?)

我有一些线程和内存泄漏问题...在日志我Tomcat7的，我发现我的Grails应用程序这行：

SEVERE: The web application [/myApp] appears to have started a thread named [MySQL Statement Cancellation Timer] but has failed to stop it. This is very likely to create a memory leak.
May 16, 2012 6:02:10 AM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
SEVERE: The web application [/myApp] appears to have started a thread named [pool-63-thread-1] but has failed to stop it. This is very likely to create a memory leak.
May 16, 2012 6:02:10 AM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
SEVERE: The web application [/myApp] appears to have started a thread named [pool-63-thread-2] but has failed to stop it. This is very likely to create a memory leak.
May 16, 2012 6:02:10 AM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
SEVERE: The web application [/myApp] appears to have started a thread named [pool-63-thread-3] but has failed to stop it. This is very likely to create a memory leak.
May 16, 2012 6:02:10 AM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
SEVERE: The web application [/myApp] appears to have started a thread named [pool-63-thread-4] but has failed to stop it. This is very likely to create a memory leak.
May 16, 2012 6:02:10 AM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
SEVERE: The web application [/myApp] appears to have started a thread named [pool-63-thread-5] but has failed to stop it. This is very likely to create a memory leak.
May 16, 2012 6:02:10 AM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
SEVERE: The web application [/myApp] appears to have started a thread named [pool-63-thread-6] but has failed to stop it. This is very likely to create a memory leak.
May 16, 2012 6:02:10 AM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
SEVERE: The web application [/myApp] appears to have started a thread named [pool-63-thread-7] but has failed to stop it. This is very likely to create a memory leak.

多的那些...问题是，我认为，所有这些线程都在从中我没有源届党JAR开发的应用程序的一部分创建，我不能由我自己修改。

是否有解决这个问题的一种方式，或至少理解什么是不顺利？

谢谢

Answer 1:

第一行表示MySQL JDBC驱动程序的bug。看起来像它被固定在5.1.6 -见http://bugs.mysql.com/bug.php?id=36565所以你可以尝试从最新的替换罐子http://dev.mysql.com/downloads /连接器/ J /

其他行表示已启动，并且应用程序停止时没有停止线程池。这实际上只能通过修改第三方jar的源代码是固定的，如果这是问题的所在。

如果可能的话，你可以尝试暂时消除了第三方jar，看看问题是否会消失。

Answer 2:

对于线程池的问题，解决方法我用了（这似乎工作）是：