For example, you can use
Oracle Internet Directory and local name resolution (TNSNAMES.ORA files)
together. In this case, you specify the order Oracle should use in resolving names in
the SQLNET.ORA file (for example, check OID first, and if the service name isn??™t
resolved, check the local TNSNAMES.ORA file). This is useful for cases in which
there are corporate database services specific to certain clients. You would use OID
for the standard corporate database services, such as email, and then use
TNSNAMES.ORA entries for the client-specific database services, such as a particular
development database.
Youalso have the option to connect directly to an Oracle database with what Oracle
refers to as the easy connect naming method. This method uses the host name or
TCP/IP identifier for the Oracle server machine and the name of the Oracle database
instance. The method is limited to use with TCP/IP networks, and is recommended
only for fairly small installations where the host identifier is rarely changed.
66 | Chapter 3: Installing and Running Oracle
Oracle Net Manager
In Oracle8, Oracle provided a GUI utility called the Net8 Assistant used to create the
various configuration files required for Net8; this utility was renamed the Oracle Net
Manager with the Oracle9i release.
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