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Why not compile a JCL ?

 
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praveenkumar.k

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Joined: 17 May 2012
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PostPosted: Wed Aug 29, 2012 10:26 am    Post subject: Why not compile a JCL ?
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Hi,

Recently I have been asked in an interview as to why we don't compile a JCL where as we are doing it for a COBOL program. My answer was that JCL is built to give instructions to mainframe but it is not the case with a program & that to run a program we need load which isn't required for JCL.

Please shed some light on this as to whether my understanding is correct else please let me know the reason.

PS: Searched internet for this but unable to find an answer.
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PeterHolland

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PostPosted: Wed Aug 29, 2012 1:47 pm    Post subject:
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Read chapter 3 in :

ABCs of OS/390 System Programming Volume 2
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rakesha.hg

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PostPosted: Wed Aug 29, 2012 2:16 pm    Post subject: Reply to: Why not compile a JCL ?
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this reminds me of my college day Microprocessor lab.

My external asked me why i was inputting only 1,2,3....0 and a,b,c ....f and why not z, x an all .... i kept quiet (my actual response in mind #%^^%$^$%^*^#$@##E%^ icon_mad.gif)
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rakesha.hg

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PostPosted: Wed Aug 29, 2012 2:24 pm    Post subject: Reply to: Why not compile a JCL ?
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Did you get the answer??

easiest explaination to give for this is JCL (JCL statements) are interpreted by JES (job entry subsystem, JES2 or JES3), thats why its not compiled.
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praveenkumar.k

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PostPosted: Fri Aug 31, 2012 1:14 pm    Post subject:
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yup, that's right... JCL is a machine understandable (low-level) language where as COBOL is higl level lanuagae so requires compilation.

Thanks for the help guys.
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dbzTHEdinosauer

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PostPosted: Fri Aug 31, 2012 1:24 pm    Post subject:
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Quote:
JCL is a machine understandable (low-level) language


nope, that's wrong!
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Bill Woodger

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PostPosted: Fri Aug 31, 2012 1:26 pm    Post subject: Reply to: Why not compile a JCL ?
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Errr..... No. Don't think you've quite got it.

Try this and continue your research.
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Akatsukami

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PostPosted: Fri Aug 31, 2012 3:48 pm    Post subject:
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There is a long and not particularly funny joke which ends with a judge asking a rabbi if he was gambling, to which the rabbi responds, "With who?"

Likewise, if asked why JCL isn't compiled, an appropriate answer would be, "With what?"
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enrico-sorichetti

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PostPosted: Fri Aug 31, 2012 4:02 pm    Post subject: Reply to: Why not compile a JCL ?
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with a/the jcl compiler... what else icon_cool.gif


sorry but it' s friday
the topic is going down the sink/toilet, will be locked shortly
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