Oracle 9.2.0 on Sun Solais8

I am unable to find "listener.log" file on the database server.

I then used the parameter "LOG_DIRECTORY_LISTENER = /u01/oracle/9.2.0/network/log" in listener.ora file
and reloaded the listener. I still can not find this file
after few days.

I can see this file for databases using 8.1.7 software
on other servers.

Any thoughts?