registered the JDBC driver [com.mysql.jdbc.Driver

INFO: Reloading Context with name [/ZestYouth] has started>     May 30, 2014 10:56:13 AM org.apache.catalina.loader.WebappClassLoader clearReferencesJdbc>     SEVERE: The web application [/ZestYouth] 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.>     May 30, 2014 10:56:13 AM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads>     SEVERE: The web application [/ZestYouth] appears to have started a thread named [Timer-0] but has failed to stop it. This is very likely> to create a memory leak.>     May 30, 2014 10:56:13 AM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads>     SEVERE: The web application [/ZestYouth] appears to have started a thread named> [com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#0] but> has failed to stop it. This is very likely to create a memory leak.>     May 30, 2014 10:56:13 AM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads>     SEVERE: The web application [/ZestYouth] appears to have started a thread named> [com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#1] but> has failed to stop it. This is very likely to create a memory leak.>     May 30, 2014 10:56:13 AM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads>     SEVERE: The web application [/ZestYouth] 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.>     May 30, 2014 10:56:13 AM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads>     SEVERE: The web application [/ZestYouth] 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.

错误如上。

先说说本人配置。一台服务器上挂着两个tomcat。

启动了其中一台，另一台就挂掉。

因为我只改动了启动端口号，一个80，一个8083.

但是两个tomcat的shutdown端口又是一样的，就会造成此错误。

所以解决办法就是改变其中一台的shutdown端口，从8005改成8015.

问题解决。