Common oracle database commands

Common oracle database commands
Conn is used to connect to a new user. It is often used to switch the user's conn user name/password to connect to the new user show user to view the current user disc to disconnect the current connection, but do not exit the sqlplus window exit disconnect the current connection and exit the sqlplus window passwd to change the user password. If you change the password for yourself, you can leave the user name without it. If you change the password for someone else, you need the user name. & Interactive commands can dynamically enter query conditions when executing commands,
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Spool saves the data displayed on the screen to a file.

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