04 March 2011

TROUBLESHOOTING: JDeveloper will not start

JDeveloper refused to start. It loaded up to ~600MB of memory and then it freezed. See image below:

Also IE was refusing to load the Home page.

Checking the files accessed by JDeveloper, indicated the probable cause:

So after removing the files below
  • C:\Documents and Settings\spiros\Local Settings\History\History.IE5\index.dat
  • C:\Documents and Settings\spiros\Local Settings\Temp\hsperfdata_spiros\3736
  • C:\Documents and Settings\spiros\Local Settings\Temporary Internet Files\Content.IE5\index.dat
and Restarting Windows, JDeveloper managed to start.
Moreover, one of the most useful tips when you have problem with JDeveloper (not starting or performance degradation, crashes etc) is to remove JDeveloper's system directory
The default location is
C:\Documents and Settings\username\Application Data\JDeveloper\
under that directory is a directory named
(for JDeveloper
Close JDeveloper and remove it. Upon starting again, JDeveloper will recreate a new fresh one.
WARNING: All your JDeveloper settings (SVN settings, Preferences etc) will be lost!!!!

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