This days I had a issue while I tried to work with JDeveloper 11g (11.1.1.2.0) Studio Edition on a MAC OS X, when I tried to lunch the installer I got this error:

java.lang.OutOfMemoryError

this bug look like a problem since version 1.4 and 1.5 from Sun/Oracle Java version’s.

To fix this problem you have to update the jave version, in my case I had 3 java’s versions 1.4, 1.5 and 1.6, but by default my system was working with 1.5.

To change the default java version you have to go to:

Applications -> Utilities -> Java Preferences

Here you have to drag and drop in the java aplications the Java SE 6 at the begin.

Mac OS X Java Versions

That’s all then just open a terminal a type:

java -jar jdevstudio11112install.jar

then you should get this:

Note: Please review this to choose the Java Home

http://www.oracle.com/technology/products/jdev/htdocs/11/knownissues.html#install4