To allow multiple clients to connect to the database over a network, edit the file tnsnames.ora.
Go to the directory Oracle-base/product/10.1.0/db_1/network/admin/.
Open the file tnsnames.ora in a text editor.
At the end of the file, append the following:
SOAR = (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = host.domain)(PORT = 1521)) (CONNECT_DATA = (SERVER = SHARED) (SERVICE_NAME = soar) ) )
For host.domain, substitute the full domain name of the system where the database is installed.