What is the number of DDs for fnames?



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What is the number of DDs for fnames?

Postby gokulNmf » Thu Mar 08, 2012 11:45 am

Hi,
The "Multiple Output Data Sets" in DFsort using OUTFIL & Fnames, how many such DDs can be giving in a single step?
I have a requirement in which i have an input file and have to split it on some KEY, there are 300 odd :o :cry: keys. So i want to know how many output DD :? i can give/create in single sort step?
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Gokul
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Re: What is the number of DDs for fnames?

 

Re: What is the number of DDs for fnames?

Postby BillyBoyo » Thu Mar 08, 2012 1:11 pm

If you have a look at the manual, it will tell you what the limit is (and it can depend from site to site, as it is not down to DFSORT but how z/OS has been installed). It is the same as the limit for any step, so the JCL manual should also be able to guide you.

300 is not a problem. I hope you aren't coding all that by hand :-)
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Re: What is the number of DDs for fnames?

Postby Frank Yaeger » Thu Mar 08, 2012 11:40 pm

The limit actually depends on the storage available, the BLKSIZE of the OUTFIL data sets, etc, as well as the system limits, but the limit is usually closer to thousands than hundreds.
Frank Yaeger - DFSORT Development Team (IBM) - yaeger@us.ibm.com
Specialties: JOINKEYS, FINDREP, WHEN=GROUP, ICETOOL, Symbols, Migration
=> DFSORT/MVS is on the Web at http://www.ibm.com/storage/dfsort
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Re: What is the number of DDs for fnames?

Postby gokulNmf » Tue Mar 13, 2012 10:59 am

Thank you BillyBoyo & Frank Yaeger.
@ BillyBoyo: Yes i am not coding by hand; the cobol program will create the jcl.
I have finished the cobol, will submit and check the jcl.
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Re: What is the number of DDs for fnames?

Postby BillyBoyo » Tue Mar 13, 2012 1:10 pm

Good for you. Always, when there are "lots" of something, look for a way to automate/semi-automate. If you do a bit of code, you avoid typos and have lots of other advantages.

It is a bit of time to write the first one, but it can then be re-used. Also think of other languages you might have access to. rexx is an excellent tool for things like this. If you don't know it, try to start looking into it in your own time. If you have a PC at home, the oorexx is quite a good fit for th z/OS one.
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Re: What is the number of DDs for fnames?

Postby gokulNmf » Mon Mar 19, 2012 3:29 pm

Thanks BillyBoyo, i have worked in rexx to create few tool for our project, but have only elementary knowledge. First tiem i am hearing abt ooRexx. I ll give try to this. But i find little difficult to work in rexx for windows. Tats y i dint install it @ home. Nowadays i have some free time, ll try ooRexx.
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