[nick.polites]

Originally Posted by seo1394

The TNSNAMES.ORA is a configuration file and the entry inside this file is used to connect to a oracle database server.
This file exist in oracle client pc and from the client computer this file entry is used to resolve
oracle service to establish connection to oracle server. It is nothing but contains net service names
mapped to connect descriptors for the local naming method, or net service names mapped to listener
protocol addresses. Note that we can easily connect to oracle database server without the help of
TNSNAMES.ORA.

Not to sound out of context here but what does this have to do with the schconfig script? You need to have the tnsnames.ora entry in place to connect to your FTI instance. Running the schconfig will tell OBI what database to connect to and with what user (hdowner). In the setup.sh file you tell OBI where the Oracle client is installed.