In the previous lesson, you learned about managing stored scripts within Recovery Manager. This lesson introduces you to the run command, which is used to execute stored scripts. In addition, the run command allows you to execute operating system commands and SQL commands.
When the run command operates, two things happen. The commands are compiled into blocks or steps of PL/SQL code. Then, these steps are then stored in memory and executed. The compiled version of your script is not stored for later use. Take a look at some samples of the run command in the SlideShow below:

It should be noted that you could use the run command to execute the same syntax that you might have in a stored script. Below is an example of using the run command to back up the USER_DATA tablespace.

run{
 allocate channel 1 type disk;
 backup
 incremental level = 0

 format 'd:\backup\orc1_%s_%p' 
 (tablespace 'user_data');
};