نرجو من الاخوه شرح كيفية عمل
عمل Lopback Adapter على خوادم قواعد البيانات

what do u mean with loopback adapter?

what do u mean with loopback adapter?

اقصد التعديل على ملف ال etc/host
باضافة ip مع ip localhost

it is so easy open the file etc/hosts with gedit command the add the servernames and IPs and then save the file and restart the server.

well you please give me an example of typical host file ?

see this link it will help you
http://www.cpqlinux.com/hostname.html

thank you vary much indeed
you'r more than helpfull

thanks my friend