While installing the Oracle Database Software, we have find this Fatal Error:
Error:
[FATAL] [DBT-06103] The port (5,500) is already in use.
ACTION: Specify a free port.
Solution:
Edit the /etc/hosts
# IP_ADDRESS HOSTNAME_WITH_DOMAIN HOSTNAME
172.16.1.82 ol8u2.wadhahdaouehi.tn ol8u2
Enjoy !