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.
Like the Database Configuration Assistant, the Oracle Net Manager is written in Java, provides the same look and feel across platforms, and is typically first accessed
from the installer. The Oracle Net configuration files have a very specific syntax with multiple levels of nested brackets. Using the Oracle Net Manager allows you to avoid
the errors that are common to hand-coded files. This utility, which automates the configuration of various Oracle Net components, is shown in Figure 3-7 as it appears in Oracle Database 11g.