The specific customizations you can make may vary depending on the operating system and the SQL*Plus version. Generally, though, you need to be aware of the login scripts and the environment variable settings.
Two SQL scripts are executed whenever SQL*Plus starts up:
The first script, known as the site profile, is named glogin.sql . It applies globally to all users on a particular computer.
The second script, known as the user profile (not the same thing as the product user profile discussed in Chapter 13), is named login.sql . Each user may have his or her own user profile script.
The most obvious use for these files is to execute SET commands to customize the environment settings to something other than their defaults.
Several operating system environment variables affect how SQL*Plus operates. Some of what these environment variables allow you to specify include:
The search path to use for SQL scripts
LOCAL or TWO_TASK
A default database connection
The language being used
Under Windows, these settings can be made in the registry, but environment variables take precedence over their corresponding registry settings.
Introduction to SQL*Plus
A Lightning SQL Tutorial
Generating Reports with SQL*Plus
Creating HTML Reports
Writing SQL*Plus Scripts
Extracting and Loading Data
Exploring Your Database
Tuning and Timing
The Product User Profile
Customizing Your SQL*Plus Environment
Appendix A. SQL*Plus Command Reference
Appendix B. SQL*Plus Format Elements
Oracle SQL*Plus: The Definitive Guide (Definitive Guides)
Authors: Jonathan Gennick