Shame on me !!!! I had forgotten to copy my .omniORB.cfg from my redhat7.1 to my redhat8.0 :((( So sorry ... Thanks to Bjorn for : ../eg3_impl -ORBtraceLevel 30 which gave me the answer A question for Janet : Does your omniNames launch more than one thread appearing via a "ps" ? Cheers, E.A.