From: <glassfish_at_javadesktop.org>
Date: Wed, 30 Dec 2009 07:49:08 PST

Just to finish this thread, the problem was in fact with the URL. A missing colon in the URL.
 
So,
jdbc:oracle:thin[b]:[/b]@ was incorrectly entered as
jdbc:oracle:thin@
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http://forums.java.net/jive/thread.jspa?messageID=378062