Map IP to hostname on Solaris 10

I am seeking help. We have a UNIX sparc box with Solaris 10 on it. We configured this box as 3 zones with 3 static IP address. I installed Oracle 10g on glabal zone successfully. Now Oracle DBConsole can be started successfully, but it can not find IP for global zone and also can not identify hostname.domain.com. Please show me how to map IP for global zone to hostname.domain.com correctly. Can I edit these files 1. /etc/inet/ipnodes, 2./etc/inet/hosts, 3. /etc/inet/hostname.bge0? If I do, what is the impact on server? Please give details. Thanks a lot.