java liferay项目中的内存泄漏

Question

当我尝试重新部署我的项目时，有时它会耗尽内存并抛出perGemSpace错误(只需重新部署2-3次)我知道我的项目有一些内存泄漏问题，但找不到，有人可以给我解释一下。:-？

Jan 14, 2013 1:12:21 AM org.apache.catalina.loader.WebappClassLoader clearReferencesJdbc
SEVERE: The web application [/qlbc-portlet] registered the JDBC driver [net.sf.log4jdbc.DriverSpy] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.
Jan 14, 2013 1:12:21 AM org.apache.catalina.loader.WebappClassLoader clearReferencesJdbc
SEVERE: The web application [/qlbc-portlet] registered the JDBC driver [org.postgresql.Driver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.
Jan 14, 2013 1:12:21 AM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
SEVERE: The web application [/qlbc-portlet] appears to have started a thread named [Thread-43] but has failed to stop it. This is very likely to create a memory leak.
Jan 14, 2013 1:12:21 AM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
SEVERE: The web application [/qlbc-portlet] appears to have started a thread named [Timer-4] but has failed to stop it. This is very likely to create a memory leak.
Jan 14, 2013 1:12:21 AM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
SEVERE: The web application [/qlbc-portlet] appears to have started a thread named [com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#0] but has failed to stop it. This is very likely to create a memory leak.
Jan 14, 2013 1:12:21 AM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
SEVERE: The web application [/qlbc-portlet] appears to have started a thread named [com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#1] but has failed to stop it. This is very likely to create a memory leak.
Jan 14, 2013 1:12:21 AM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
SEVERE: The web application [/qlbc-portlet] appears to have started a thread named [com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#2] but has failed to stop it. This is very likely to create a memory leak.

Answer 1

看起来你没有注销你的驱动程序或者停止你的线程。

如果你不能很好的管理这些项目，你很可能会得到内存泄漏，就像这样。