database replication

Hello all,
I need to configure a basic replication, a master database updatable and other replica read-only.
Where can I find information about this configuration?

Release:

DB: ORACLE 7.2
OS: HP/UX 10.10

I appreciate any help you give me.

Thanks a lot and regards,

         Yolanda

-- 
         Yolanda Barroso Vázquez          	 
                                           	 
    Mail: yolanda_at_hpspnwro.spain.hp.com