After you install the Oracle binaries and create a database, you should configure your environment to enable you to operate efficiently. Regardless of the functionality of graphical database administration tools, DBAs still need to perform many tasks from the OS command line and manually execute SQL statements. A DBA who takes advantage of the OS and SQL has a clear advantage over a DBA who doesn’t.
In any database environment (Oracle, MySQL, and so on), an effective DBA uses advanced OS ...