The output spooling a nice feature of the command-line SQL*Plus tool. If the spooling feature is turned on, SQL*Plus will send a carbon copy of the everything on your screen to a specified local file.

Output spooling is used mostly for quick dump of data to local files. Here are the commands to turn on and off output spooling in SQL*Plus:

* SPOOL fileName - Turning on output spooling with the specified file.

* SPOOL OFF - Turning off output spooling and close the spool file.