JCL - PART I

JCL Stands for Job Control Language. As you all might know JCL has three main Keywords

1. JOB
2. EXEC
3. DD

We will elaborate each in coming parts soon. In this part we'll talk more about JCL.
You can think JCL as equivalent to a bat file in Windows. In JCL you can execute one step after another in sequence of there occurrence. Consider and example below.

//JOBNAME JOB(acct info).....
//STEP20 EXEC .....
//STEP10 EXEC .....

In the above example as you can see the STEP20 runs first and next STEP10, main thing that you can observe here is name its just for our understanding, mainframe follow the occurrence. If you don't know the syntax don't bother now you'll explore later.
At maximum of 255 steps can be executed in a JOB. When you submit your JOB using SUBMIT Command you can see the JOB in SPOOL (to go to spool enter s.st in ISPF main menu)


Still to come here....