this is the problem:
"Unable to connect
Firefox can't establish a connection to the server at 127.0.0.1:8080."
what I've done till now...
installed oracle xe,configured it with default options,modifyed oracle's .bash_profile and .bashrc with this '. /usr/lib/oracle/xe/app/oracle/product/10.2.0/server/bin/oracle_env.sh',
modifyed listener.ora and tnslistener.ora this '(HOST = localhost.localdomain)' to this '(HOST = localhost)' and I've managed to start the listener(I wasn't starting)...but I still have the error.
ps: I've done it by the book(oracle's tutorial) and the listener wouln'd start (unknown host) I had to modify some parameter files(listener)...
I have no further ideea what to do
thank you in advace for your answers