Could not create the Java Virtual Machine Unrecognized option: -jrockit

While working with a client, after client installed all the required softwares, WLS, Jdeveloper and JDK on the machines , there was an error which came up on starting integrated weblogic server from Jdeveloper. That error was something like below :-

Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.
Unrecognized option: -jrockit