Once all the files are downloaded from edelivery and staged in a disk location, check the consistency of the downloaded files with md5sum utility (steps listed in metalink note: MD5 Checksums for R12.1.1 Rapid Install Media [ID 802195.1] )
Fully review the pre-requisites (linux 64 bit).
For clarification on Oracle E-Business Suite on Linux x86-64, see Frequently Asked Questions: Oracle Applications Support on x86-64 (My Oracle Support Document 343917.1).
Rpms can be downloaded automatically using yum. Deatils in https://www.rostlab.org/owiki/index.php/RPM_package_repository_for_RHEL/SUSE/CentOS
The below is a very good support note that has details on the various EBS installation scripts and log file locations (there are many of them; sure EBS is a very complex software).
How to locate the log files and troubleshoot Rapid Install for Release 12.0.x and 12.1.x [ID 452120.1]
