I install SQLDeveloper EA1 then EA2 and now EA3 on my Linux (Fedora 19), but the result is the same.
If i start SQLDeveloper with root it work, but if i start with my user the application crash. I tested to change owner of all component, but the result is the same.
Then because I started the application with jdk1.6 (I used the EA1 who did not warning about the java version) and it work fine!!!
I opened two "Report a HotSpot Crash", but I never received a response.
This sounds like
Re: 4EA1: Not starting on Ubuntu. Unkown protocol sqldev.temp