请教如何监控应用的性能

sybaseoracle

queue: 'weblogic.kernel.Default' has been busy for "1,098" seconds working on the request "Http Request: /viewproject.do", which is more than the configured time (StuckThreadMaxTime) of "600" seconds.>
####<2009-11-10 10时38分31秒 GMT+08:00> <Warning> <WebLogicServer> <loopback> <myserver> <weblogic.health.CoreHealthMonitor> <<WLS Kernel>> <> <BEA-000337> <ExecuteThread: '38' for queue: 'weblogic.kernel.Default' has been busy for "821" seconds working on the request "Http Request: /viewproject.do", which is more than the configured time (StuckThreadMaxTime) of "600" seconds.>

最近老发现服务器有如上错误，操作系统为AIX，应用服务器是WEBLOGIC8。1 JDK为1。4，请教下有哪种工具可以比较好的
监控应用线程使用情况和内存使用情况，应用打开哪些文件文件没有释放（常发现OPEN FILE TOO MANY 错误）,谢谢

i586w

楼主有需要可以联系我，我有类似的产品，我的联系方式是：qsd1979@gmail.com