Eclipse Debugging- out of sync Issue

I'm debugging a web app in Eclipse IDE (Helios release Build Id 20100617-1415). The app runs on LifeRay-tomcat bundle via Eclipse plugin (running server from within Eclipse). I start LifeRay-tomcat server in Debug mode. I'm doing hot deployment- copying .class files to webapps//WEB-INF/classes folder. I run a windows batch script for copying any changed bytecode to liferay-tomcat directory. When the bytecode gets copies, I see a message in debug console saying "may be out of sync" and the moment I refresh the web page and control jumps on the line number, my debugger thread icon changed to red and the warning message now reads "out of sync". Even if I clear all breakpoints, I get this message and new code is no longer debuggable; every time I need to restart the server.

Any开发者_JAVA技巧 suggestion on this issue will be appreciated.

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The eclipse framework has a complex workspace management. You said that are using a script for copying the class, if your script is not a eclipse feature it will breaks the workspace resource, so you will cannot debug.

Try to use only eclipse features for doing the debug.

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I've created an Eclipse Java Builder which points to a .bat file to copy the new byte code. So, I guess it's an Eclipse feature. That said, I don't think there's any issue with the script or the way it's used. Even if I manually copy-paste the changed .class files, I get out of sync issue resulting in restarting the container.