Oracle Entreprise Linux is a linux system based on the Red hat distribution. Oracle Linux is fully compatible—both source and binary—with Red Hat Enterprise Linux.
Applications that run on RHEL will run on Oracle Linux. Trademarks and logos have been removed from a small number of the packages. These are non-functional text or graphics changes that in no way affect any program code, and they do not generate any compatibility issues. Oracle has added its own text file, /etc/enterprise-release, so support teams can easily identify that they obtained the code from Oracle.
The Edison Group ran independent tests to validate Oracle’s claim of compatibility: Read their report, Oracle Unbreakable Linux: True Enterprise-Quality Linux Support.