Thanks John VV + TB0ne For The reply
as expected , I Was Really in the dark
I'll give it a Try with(Centos)
"Unless you post DETAILS, there's nothing we can help you with."
i got what i was looking for ( that fedora doesn't support oracle )
But i can list all the problems that i've faced if you are intrested
( display check failure ; xhost unable to export =0 ....)