With the end of full support for RedHat’s Enterpris Linux 4 as of May 15 (2008), Oracle was just in time announcing support for Enterprise Linux 5 (both Oracle’s and Red Hat’s) for Oracle E-Business Suite 11i.
Oracle Enterprise Linux 5 has been available for a while now, and the wait for certification with EBS 11i has been long. However, it is here now, and that is what counts.
Also Suse Linux Enterprise Server 10 has been certified.
Find updated information in the Oracle Applications Installation Update Notes (Metalink Note 316806.1).
Have fun migrating!;-)