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JRockit does not have any fancy (GUI based) upgrade tool.
It is as simple as replacing the old binary files with the new one.
You have two options:
- Uninstall the existing JRockit OR delete the files in the directory AND
- Install the new JRockit in the same directory.
- Leave alone the old installation and
- Choose a new directory for the new version installation.
- Then change the environment variable, JAVA_HOME, in all your scripts and while starting the JVM to the newly installed location.
For example, when running old jrockit you would say, > D:\Middleware\jrockit_160_29_D1.2.0-10\bin\java -Xmx1024m weblogic.Server
when running new jrockit you would say, > D:\Middleware\jrockit-jdk1.6.0_29-R28.2.2-4.1.0\bin\java -Xmx1024m weblogic.Server