how to process the stepthat we want leaving all the other.

venkat1111_a1 · New User Joined: 14 Feb 2006 Posts: 8

hai,
this is venkat hear is small doubt can any one clear that for me.
How to process the step that we want leaving all the other.
while we r coding in a JCL ,if we have nearly 20 steps to execute & if we want to execute only one step (say step03) . can we give any conditional statements to it.

smiley · New User Joined: 08 Feb 2006 Posts: 27

we can use COND parameter to skip all the other steps

nuthan · Posted: Tue Feb 21, 2006 11:35 am

Hi,
Give RESTART prerameter in job card like 'RESTART=STEP3' and after the 3rd step keep null statement like // . Then it will execute third step and comes out.
If u want to execute particlar steps depending on some conditions then use COND perameter.

kumaresh.M · New User Joined: 17 Feb 2006 Posts: 64 Location: Bangalore

we can use the RESTART parameter to do this,
make sure that we can code the restart parameter in JOBCARD,
and further control of steps u use that COND PARAMETER

WITH REGARDS

KUMARESH.M

mmwife · Super Moderator Joined: 30 May 2003 Posts: 1592

Here's the way it's done:

Code cond=(0,le) in the job card; also code restart=step/you/want/to/exec.

The 1st step you exec is the restart step and all the others following are by-passed due to the cond in the job card.

Ayyappan · New User Joined: 05 Jul 2005 Posts: 31 Location: India

Hi Jack,

But if the return code of the executed step is greater than 0, then i guess, the other steps will get executed.

Please correct me if i am wrong.

Thanks.
Ayyappan

rajesh_1183 · Posted: Fri Feb 24, 2006 11:34 am

Hi,
try this...........

meenasomu · New User Joined: 15 Sep 2005 Posts: 17

Hi Ayyappan,

Yes if the return code is greater than zero, then the step will get executed.
So, we can use something like this.

mmwife · Super Moderator Joined: 30 May 2003 Posts: 1592

Hi Ay,

No. COND=(0,LE) reads this way: if 0 is less than or equal to a RC passed by any previous step in the job don't exec this step.

Each step in the job tests for this. If the restarted step passes a RC of 12, 0 is less than 12 so no following step executes.

Steps can't issue negative RCs.

P.S. I've used this many times - it's not just a guess.

kaarthik6_mf · New User Joined: 27 Feb 2006 Posts: 3

Hi
I have faced this question at an interview I was happy to find a very high-level and nice solution for this Rajesh_1183,Can i contact you for more details whever needed.
Thanks
Kartik.FR

mmwife · Super Moderator Joined: 30 May 2003 Posts: 1592

Hi Kartik.FR,

Why not share your knowledge with all members. That's what this Forum is all about.

dneufarth · Posted: Wed Mar 01, 2006 8:30 am

This question continues to appear here without sample JCL provided. It is almost never that easy to just run one step of a job as the fact of prior dataset dependecies or restoration to needed state are never addressed.

If a temp dataset is created in a prior step and is needed in the executed step, it will not be available. If a temp dataset is created in executed step and needs further processing and cataloging in a subsequent step, it is not processed/cataloged. If an updated dataset/database table needs restoration to its prior state, it is not restored.

I worked at places where all QSAM data sets created within the job were passed until the very last step where they were cataloged or discarded. Jobs were limited to roughly 45 minute runs so reruns were manageable.

In most places that I've been a special job is created as a one-time execution.

Perhaps it's me, but this interview question is meaningless. I chuckle to myself every time I see these posts.

sonu_winks · New User Joined: 23 Nov 2005 Posts: 23

i dont think that we need to complicate things,most of the time we want to achieve this for testing by modifying only the job card.
Jack has the simple and most straight forward soln for this..that works perfectly.

mmwife · Super Moderator Joined: 30 May 2003 Posts: 1592

Hi David,

I've used this when a del/define step or an IEFBR14 is a few steps away from the one I want to restart from, but I need the file fixed first.

It comes in handy and it's quick.