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To start SQL*Plus and connect to the database from the conimand linę:

1.    Open a command window.

2.    Configure the operating system environment variables, as described in "Configuring the Operating System Environment Variables" on page 3-2.

3.    Start SQL*Plus using a command in the following format: sąlplus {username I /} [as sysdba]

An example of this command is the following:

$ sąlplus / AS SYSDBA Enter password: password

For username, you can use the SYS or SYSTEM administrative users. At the prompt,

enter the password that you set up during installation. If you use the SYS user, you must include AS SYSDBA after the username.

SQL*Plus connects you to the default database instance (Microsoft Windows) or the database instance specified by environment variables (Linux and UNIX).