@PAVB, no local listener. Already tried to do a ping a the same time, to itself, and other host, an R3trans, a lsnrctl status and a tnsping to another db plus a tnsping to the db from and other host using the same listener.

Findings:
ping to itself never fails
ping to other host never fails
R3trans does fail (with the same error)
lsnrctl status fails and shows no listener
tnsping to other db (almost) never fails
tnsping from another host (almost) never fails

so...i dont know what to conclude anymore.

I read http://download.oracle.com/docs/cd/B...fg.htm#i490287 and more specifically the part about "Registering Information with a Nondefault Listener". I tried to use this but im still no sure how to configure this. I followed what is in the document but i recieved :

ORA-00119: invalid specification for system parameter LOCAL_LISTENER
ORA-00132: syntax error or unresolved network name 'LISTENER_BID'

??