What I found by reading all the recipes is that they assume two things that might catch you:
- Sun's Java is installed somewhere in the /opt directory. In case you used RPM archive, it will be in /usr/java.
- People hardcode Java versions, e.g. 1.6.0_21. I don't know why they don't use /usr/java/latest or /usr/java/default because those are valid links on all installations.
In the end I gave up on trying to make WebEx work. Maybe I'll return to it some day and then I'll extend this post...