Problem connecting to Oracle database

[VIDYASAGAR R NALLU]

Hi All,

I'm trying to connect to Oracle database with DBD::Oracle but ended up
with the following error message.

DBI->connect(raju.o8i) failed: ORA-12541: TNS:no listener (DBD: login
failed) at dbidemo.pl line 10 
Error: ORA-12541: TNS:no listener (DBD: login failed)

I sincerely tried to set up Listener for Oracle database base using Net*8
assistant but not successfull.

Can any one help in this aspect

Thanks
Rajasree