我的tomcat上面部署的应用，只要重新部署应用，或者将已经部署的应用重启，tomcat就会挂掉，不知道大家是否有类似问题。
1、经过分析日志：
信息: Closing Spring root WebApplicationContext
2011-12-29 23:28:47 org.apache.catalina.loader.WebappClassLoader clearReferencesJdbc
严重: The web application [] registered the JDBC driver [com.mysql.jdbc.Driver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.
2011-12-29 23:28:47 org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
严重: The web application [] appears to have started a thread named [Timer-1] but has failed to stop it. This is very likely to create a memory leak.
2011-12-29 23:28:47 org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
严重: The web application [] appears to have started a thread named [com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#0] but has failed to stop it. This is very likely to create a memory leak.
2011-12-29 23:28:47 org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
严重: The web application [] appears to have started a thread named [com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#1] but has failed to stop it. This is very likely to create a memory leak.
2011-12-29 23:28:47 org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
严重: The web application [] 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.
2011-12-29 23:28:47 org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
严重: The web application [] 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.
看报的异常信息是应用程序注册了JDBC驱动，但当程序停止时无法注销这个驱动，tomcat为了防止内存溢出，就给强制注销了。
在网上搜，tomcat6.0以上版本皆有此问题。要么取消tomcat防内存溢出的监听。
不清楚大家都是怎么处理的。
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