Its been a while since I've played with this, but it seemed to me that
there where issuses if you put hosnames in the TCP.INVITED_NODES that
where running Dynamic IPs. The DNS lookup in the listener evidently is
evidently done once, and it does not see the new IP unless you bounce
Its not an issue with app servers and the like (running fixed IPs), but for people who wanted some admin type of access from their desktops it was.
--Peter -- http://www.freelists.org/webpage/oracle-l