tomcat 启动报JDBC内存溢出

严重: Error listenerStart
2013-12-17 9:13:57 org.apache.catalina.core.StandardContext start
严重: Context [] startup failed due to previous errors
2013-12-17 9:13:57 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.

我在本地上运行没问题 ，添加到服务器上就报这个异常 。