Enable remote debugging in a running JVM

Is it possible to debug an application, which is already running in the server without restarting. If so how? if not what is the reason?
steps:
1. run the application in the server with out adding the debugging arguments.
2. once server is up, debug the application.
Thanks!!

yes, i believe it is possible. it's kind of obscure information, but it is basically similar to the ability of jvisualvm to dynamically attach to running java processes (in later versions of the jdk). this is enabled via some platform specific means of communication which dynamically starts the remote jmx agent within the running jvm (the last bit being the part that is relevant to your question). i don't know off-hand what incantations are necessary, but google should be able to find something about dynamically starting agents in running java vms.
sure enough (and it seems to be related to the Attach API, which is what jvisualvm uses): http://osi.fotap.org/2008/06/27/dynamically-installing-agents-in-java-6/
Edited by: jtahlborn on Nov 6, 2010 9:33 AM

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