Weekend Learning: How to use logical hostnames to configure Oracle EBS R12

Want to add a lot to your toolbox this weekend?  Look no further than document "Configuring Oracle E-Business Suite Release 12.x Using Logical Host Names" on My Oracle Support from note ID 1968231.1 for a lot of installation and configuration details which you may have never had an opportunity to see before!

Clusterware OC4J resource marked as OFFLINE

It seems like everybody knows that the localhost address is 127.0.0.1 if you are in IT, but what happens when Oracle does not remember that fact?  Well, you get what we had here in MOS article "ORA.OC4J Resource in Clusterware keeps going OFFLINE" via note ID 2025042.1 where you have to change configuration to hardcode the localhost address because it was not being resolved correctly and failing what looks like a heartbeat check.