If you want to install Oracle 12c on EL6 Linux Systems there are many pre-install steps that you should do before actually begin the database installation.
For ease Oracle provide as name states RPM package:
But it is only for Oracle Linux from Oracle Public YUM Repo.
Ofcourse you can activate this repo without trouble but in fact problem of this RPM is dependency of Oracle Linux Kernel exactly UEK. Output:
Installing: oracle-rdbms-server-12cR1-preinstall x86_64 1.0-8.el6 /oracle-rdbms-server-12cR1-preinstall-1.0-8.el6.x86_64 37 k Installing for dependencies: compat-libcap1 x86_64 1.10-1 base 17 k compat-libstdc++-33 x86_64 3.2.3-69.el6 base 183 k kernel-uek …[Read more]