Are you aware of the packages required for Oracle E-Business Suite (EBS) R12 On Oracle Linux 7/Red Hat Enterprise Linux 7?
If Not, then this blog post at www.k21academy.com/appsdba54 has all the information you need.
The blog post will tell you the:
✔ Packages to be Installed In Application Tier
✔ Packages Need to be Installed In Database Tier
✔ Packages Need to be Installed In Database Tier & Application Tier
Oracle ACE, Author, Speaker and Founder of K21 Technologies & K21 Academy : Specialising in Design, Implement, and Trainings.