Erroor : "Could not create the Java virtual machine" in Jdeveloper 11g

While starting Integrated Weblogic Server of Jdeveloper 11g sometimes we get Error message as:

Could not reserve enough space for object heapCould not create the Java virtual machine.

To solve this issue we need to add one environment varible.

Right click on My Computer, go to properties->Advanced->Environment Variables.
In user Variables add a New variables with below details:

Variable name: EXTRA_JAVA_PROPERTIES

Variable Valute: -Xms256m -Xmx256m

Now try starting the Integrated weblogic server.

In my case it worked fine after addig Environment variable.