TOMCAT关闭时如何关闭HIBERNAET连接池？？？

严重: The web application [/webDesign_8] registered the JDBC driver [com.hxtt.sql.access.AccessDriver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.
2011-6-16 17:09:47 org.apache.coyote.AbstractProtocolHandler stop


tomcat 关闭出现这句话，我用hibernateTemplate处理保存数据时，不关闭TOMCAT，数据保存到了ACCESS里，关闭TOMCAT，
数据就没有了，估计和这段话有关，因为我用SESSION手工关闭了连接，再关闭TOMCAT时，虽然还出现这段话，但数据没丢失

如果在TOMCAT关闭时关闭Hibernate连接池？？？

没人理我。。。。。