I mistakenly put oracle Root logger to finest which of course crashed everything. So I restarted JDev then restarted Weblogic horror the setting was still set. Great so now I could not work. Solution (thanks google and this oracle doc ): located the logging.xml file in your integrated weblogic server: C:\Users\[your user]\AppData\Roaming\JDeveloper\system11.1.1.6.38.62.29\DefaultDomain\config\fmwconfig\servers\DefaultServer Edit it and remove the offending log leve setting. (mine was <logger name='oracle'/ level='FINEST'> ==> <logger name='oracle'/>) All fixed and working again...
The Incident Archive: A blog to store my knowledge on the errors that I fix on a daily basis