The sa38 tcode

Tcode SA38 is used to run programs or reports in SAP. This Tcode is highly critical. This tcode is generally not given to any one int Production and quality environment. Only Virsa firefighter ids and SUPER users has this tcode.
enter SA38 in the command field on top left corner and hit enter key.
Then you will see the screenThen enter the program name and press F8 key or click on execute button
Then you will see the program screen......


After that i hope you know what you are supposed to do.

When you add SA38 to a role menu the following objects gets added
S_PROGRAM
and authorization groups.

the S_PROGRAM object contains the following values
SUBMIT
BTCSUBMIT
VARIANT


SUBMIT allows one to run a program.
BTCSUBMIT allows the user to Schedule a background job for the execution of a program.
VARIANT allows user to maintain variants for the program.
These three can be given depending upon the policy of the customer.
There is another tcode SE38 which has same functionality as SA38 but can do a lot more than sa38

for more info go diffrence between SA38 and SE38
To find out how to lock these critical tcode refer this page