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JCL - DDName - File Allocation

 
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Sriramhari

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Joined: 11 May 2009
Posts: 17
Location: Bangalore

PostPosted: Tue Jan 01, 2013 3:28 pm    Post subject: JCL - DDName - File Allocation
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Hi All,
Please find the scenario and share your suggestions.
Scenario:
3 jobs has to run in parallel. 3 different jobs : 3 different input files, but same layout – Same kind of Processing . Same program is getting executed. (Program has only one DDName).
In Test region:
In Test region 3 jobs are running in parallel, successfully with one DDName - creating 3 output files (GDG versions) each for one Input file, successfully as expected.
Question is:
With One DDName - 3 different input files – but 3 different jobs.. how in the run time in production both are associated.. Is it will run fine..? or may give some allocation error..? (Please Note: In Test region it is running fine.). Please share your thoughts on this.

Thanks,
R. vidhya.
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prino

Active Member


Joined: 07 Feb 2009
Posts: 982
Location: Oostende, Belgium

PostPosted: Tue Jan 01, 2013 5:06 pm    Post subject:
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You claim to have skills in the following:

Cobol,Jcl,Cics,DB2,REXX

My assumption is that you spent two weeks in a "training" institute, where you learned to write "Hello, World!" in COBOL, were told what CICS and DB2 are, submitted one IEFBR14 job, and were told that REXX execs have to start with a
Code:
/* REXX */
comment.

Asking a question like this on an experts forum only serves to show that you are a complete and utterly clueless newbie.
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Sriramhari

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Joined: 11 May 2009
Posts: 17
Location: Bangalore

PostPosted: Tue Jan 01, 2013 5:35 pm    Post subject: Reply to: JCL - DDName - File Allocation
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Hi Prino,
Your statment is not correct, the way my question framed may be wrong.
It is clearly mentioned 'It is executing fine in Test region',
My hope is it will run fine in Production. As the job trigged through CA-7 it will allocate specified resource to the job and it will run fine.
Here the same kind of existing programs (written in 80's) are having 3 different dd names, and in the program it is checking for which file we're processing (first or second or third). I don't want to do that kind of checking. As JCL will take care of allocation of files, and logical association of ddnames with the program. As it is 3 different job it will run fine.
Thought of asking expert's suggesstion, to get some more clear idea and strong points to discuss. Thanks for your time and reply.

Thanks,
R. vidhya.
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enrico-sorichetti

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Joined: 14 Mar 2007
Posts: 10201
Location: italy

PostPosted: Tue Jan 01, 2013 5:38 pm    Post subject: Reply to: JCL - DDName - File Allocation
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topic locked before it sinks too deep into HM
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dick scherrer

Site Director


Joined: 23 Nov 2006
Posts: 19270
Location: Inside the Matrix

PostPosted: Wed Jan 02, 2013 9:44 am    Post subject:
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Hello,

This has been unlocked and relocked so i might add the following:

Quote:
3 jobs has to run in parallel.
You do NOT need to run all 3 jobs in parallel. Someone has wasted whatever time on an unacceptable approach.

I suspect there is neither a business reason nor a technical reequirement to do this. . .

You need to redesign how the process is designed and re-implement.
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enrico-sorichetti

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Joined: 14 Mar 2007
Posts: 10201
Location: italy

PostPosted: Wed Jan 02, 2013 1:38 pm    Post subject: Reply to: JCL - DDName - File Allocation
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Hi Dick!
no need to unlock...
for the moderators the <locked> button still behaves as <reply>
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dick scherrer

Site Director


Joined: 23 Nov 2006
Posts: 19270
Location: Inside the Matrix

PostPosted: Wed Jan 02, 2013 8:39 pm    Post subject: Reply to: JCL - DDName - File Allocation
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Hi Enrico,

Cool, this is my new "learning" for this year . . . Hopefully, there will be many more icon_smile.gif

'Preciate it!

d
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