thanks for ur replies,
just now i installed oracle enterprise edition with default database and the original database is not yet installed. and when i have to configure the listeners now i have to configure or after creating the database. still i have not created any user also, created only one user name oracle under dba group.

my envoronment is

oracle 8.1.6 on HP_UX version 11 and HP9000 server

and what are the post installation steps i want to know in detail.

if i have to configure now pls let me know in detail how to configure that (I am working in production environment).

thank you very much in advance