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Chris Wolcott wrote:
Nulling the threads just removes the references but does not stop the threads and clean them up. As long as the run() method runs they are still there(This is my first JAVA app that runs on an AS/400.) I have a JAVA app on our AS/400 (JVM 1.4 / OS V5R1) that accepts requests from an outside source and spawns a thread to handle each request. (Typically a max of 5, average around 3 at a time.) Each thread creates an AS/400 object and a JDBC Connection object. The command services are disconnected and the connection statements closed after each use. The JDBC Connection is closed at the end of the thread. The threads are kept in a home grown thread pool that periodically goesthrough and sets unused threads to null so they can be GC'd.
My guess is that the old not-terminated threads are still lingering around, and you hit some hard limit for the OS/400 JVM.
See http://java.sun.com/docs/books/tutorial/essential/threads/lifecycle.html under "Stopping a thread" for the proper way to do this.
-- Thorbjørn
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