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

Problem:

If you have installed JDev 11.1.1.7.0 lately,and  when tried to start the embedded WLS instance you might got the following error message

*** Using port 7101 ***
r:\jdeveloper\system\system11.1.1.7.40.64.93\DefaultDomain\bin\startWebLogic.cmd
[waiting for the server to complete its initialization...]
.
.
JAVA Memory arguments: -Xms256m -Xmx512m
.
WLS Start Mode=Development
.
CLASSPATH=...
.
PATH=...
.
***************************************************
*  To start WebLogic Server, use a username and   *
*  password assigned to an admin-level user.  For *
*  server administration, use the WebLogic Server *
*  console at http:\\hostname:port\console        *
***************************************************
starting weblogic with Java version:
<strong>Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.
Unrecognized option: -jrockit</strong>
Starting WLS with line:
...
Process exited.

Remenmber:

JDK Vendor SUN

Jrockit Vendor Oracle


So  at the beginning of the server start we see the command used to start the server (the path may be different on your system)
r:\jdeveloper\system\system11.1.1.7.40.64.93\DefaultDomain\bin\startWebLogic.cmd
A look into this command shell reveals that another command shell script is called
r:\jdeveloper\system\system11.1.1.7.40.64.93\DefaultDomain\bin\setDomainEnv.cmd
In this script we find the problem

SOLUTION: 

just make a small change to the
r:\jdeveloper\system\system11.1.1.7.40.64.93\DefaultDomain\bin\setDomainEnv.cmd
script. We only have to set the SUN_JAVA_HOME and set the JAVA_VENDOR to ‘Sun’


set BEA_JAVA_HOME=

set SUN_JAVA_HOME=C:\Program Files\Java\jdk1.7.0_17
set JAVA_VENDOR=Sun
After this change the embedded WLS server starts without a problem.