Problem:

While installing 11gR2 64-bit version on Oracle Linux 5.7 64-bit, the installer states that certain RPMs (libaio-devel-0.3.106 and unixODBC-devel-2.2.11)  are missing. After installing the missing RPMs using the ‘rpm -Uvh’ command, the installer still does not detect the newly applied RPMs.

Solution:

Exit the 11gR2 installer, apply the RPMs and then rerun the installer.