install hyperic rpm issue

hi,

after installing RPM in Rhel server i got a problen to run the .sh file and got this messege:

HQ_JAVA_HOME or JAVA_HOME must be set when invoking the agent

i saw this answer :

On Unix-based platforms, the order of preference when resolving the agent's JRE is:

1. HQ_JAVA_HOME environment variable
2. Embedded JRE
3. JAVA_HOME

but i don't understand how to do this.

hope for help.

thanks,

Itay