请教：In-place class redefinition (HotSwap) is not available

camwei

[2007/07/10 10:48:19.984] Host[] starting
[2007/07/10 10:48:20.140] WebApp[http://localhost:8080] starting
[2007/07/10 10:48:21.609] In-place class redefinition (HotSwap) is not available.  In-place class reloading during development requires a compatible JDK and -Xdebug.
[2007/07/10 10:48:21.843] WebApp[http://localhost:8080/mp] starting
[2007/07/10 10:48:23.750] action: init
[2007/07/10 10:48:25.250] MPInitServlet: init
com.cawei.pangu.exception.PanguException: Failed to obtain connection  from th database connection pool :java.sql.SQLException: Io 异常: Connection refused(DESCRIPTION=(TMP=)(VSNNUM=135296000)(ERR=12505)(ERROR_STACK=(ERROR=(CODE=12505)(EMFI=4))))
        at com.cawei.pangu.dataaccess.db.jdbc.ConnectionFactory.getConnection(ConnectionFactory.java:1

这个问题折腾了几天了，j2sdk也重装过了（1.5.0.6），数据库连接也没有问题，还是报以上错误，请教各位如何解决，谢谢！