To resolve a Java version problem, users who have Java 1.4 or an earlier version installed as the default JVM must unset environment variable JRE_HOME.
If your platform has Java 1.4 or an earlier version installed as the default JVM, the Ops Console may fail to start.
Unset JRE_HOME if it exists in the environment. If JRE_HOME does not exist in environment and the install works correctly, RAP uses Java 1.5, which comes with the installer, to run everything.
The environment variable $JRE_HOME should point to $RAP/shared/jre15.