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How many dd statements we can have in a single step?

 
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sachin_kaushik84

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PostPosted: Fri Sep 25, 2009 12:03 pm    Post subject: How many dd statements we can have in a single step?
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How many dd statements we can have in a single step?
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guptae

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PostPosted: Fri Sep 25, 2009 12:08 pm    Post subject:
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Hello Sachin,

I think its 3273. Am not very much sure.
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bhairon singh rathore

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PostPosted: Fri Sep 25, 2009 12:11 pm    Post subject: Reply to: How many dd statements we can have in a single ste
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You can code maximum of 3273 dd statement in a step ......
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expat

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PostPosted: Fri Sep 25, 2009 12:11 pm    Post subject:
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What's wrong with searching the forum, or google. It is quite easy you know.

Click HERE to view just one topic you may have found if you had you bothered to search.
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Ketan Varhade

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PostPosted: Fri Sep 25, 2009 12:32 pm    Post subject:
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Is this a interview question? I mean do have a write those many DD statement is a step?
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Anuj Dhawan

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PostPosted: Fri Sep 25, 2009 1:29 pm    Post subject:
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expat wrote:
What's wrong with searching the forum, or google. It is quite easy you know.
Or just try allocating as many DD statements as you want till system shoots you. icon_biggrin.gif
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vv

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PostPosted: Fri Sep 25, 2009 1:34 pm    Post subject:
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yes,you can able code 3273 dd stms in a single step,but never happend like that situtation.
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Anuj Dhawan

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PostPosted: Fri Sep 25, 2009 2:51 pm    Post subject:
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The limit 3273 is also based on the number of single DD statements allowed for a TIOT. Some installation may allow to concatenate upto 3273 DDs, because the IBM-supplied default TIOT size is 32K. You need 64K TIOT to accept 3273 DDs in a single job.

So if you have 64K TIOT, you can use 3273 DDs per job (may be in a single step as well). If you have 32K TIOT, you can concatenate upto 1635 DDs.

For information about changing the size of the TIOT, see ALLOCxx parmlib member section in z/OS MVS Initialization and Tuning Reference. For information about how dynamic allocation might cause changes to the task input/output table (TIOT). see z/OS MVS Programming:Authorized Assembler Services Guide.
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