Now that I’ve organized the blog a bit, I can start posting new information. VMWare Fusion is a great tool but I fat fingered a few installs before i mastered it. You need a customized set of settings to create an effective virtual machine to run Oracle 11g. You need to allocate enough memory and pre-allocate disk space before you do the install or it takes much longer. You may also fragment a base operating system unless you setup a separate mount point (true also for VMWare Workstation for Linux).
You’ll find the steps to create a customized virtual machine for a Red Hat AS 4 installation in the Configure Custom VM blog page. It’s more or less the same thing for Oracle 10g or the Oracle eBusiness suite, except you’ll need to pre-allocate more disk space.