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Connecting to SQL*Plus
Oracle Tips by Burleson

You’ll probably connect to SQL*Plus using a command like:

sqlplus username/password

SQL*Plus provides some alternative methods of connecting that you should be aware of. For instance:

sqlplus [-silent] username/password 

Logging into SQL*Plus using the -silent flag instructs the program not to give any informational messages (not even a prompt). This is particularly useful when your script is dynamically generating code or when executing SQL*Plus from inside another piece of software.

If you login and find that you need to be working under another schema, you can login to a new schema without exiting SQL*Plus and reconnecting by using the following command:

connect username/password

You can use any of these login commands without typing your username or password as part of the command; SQL*Plus will prompt you for these values if you don’t include them in the command. Using your password as part of a command reveals the password to anyone who sees the command, so it’s probably better to enter your password when prompted in most situations.

Logging Out Of SQL*Plus

The exit and quit commands are used to leave SQL*Plus and return to the operating system. You should be aware that using either of these commands implicitly commits changes to the database. If you’ve made changes that you don’t want to save, you’ll have to roll back prior to issuing one of these commands.

You can use this command to return a status to an OS-level application that called the script, as shown in the following example:

exit success

There are five values that can be returned: success, failure, warning, integer, and variable.

  • success—The script ended execution normally. The value of this status depends on the host operating system.
  • failure—The script failed at some point. The value of this status depends on the host operating system.
  • warning—The script exited in a warning state. The value of this status depends on the host operating system.
  • integer—You can return specific integer values that suit your needs.
  • variable—You can return the contents of a variable as the status. This variable does not have to be an integer or number variable.

This is an excerpt from the book "High Performance Oracle Database Automation" by Jonathan Ingram and Donald K. Burleson, Series Editor.


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