Although SCM Server on the Oracle Linux platform has not been tested and certified, it is very similar to RedHat Linux, so the installation is pretty much the same. Chapter 3 of the Implementation Guide will step you through the process. More information on compatibility between Harvest SCM and other operating systems, databases, etc can be found in the Compatibility Matrix on the support.ca.com website (CA Software Change Manager Compatibility Matrix Index - CA Technologies)
Let me know if you have any further questions.
Melinda Skelton
CA Technologies Support Team