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Easytrieve in Instream or EXEC

 
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subdalal

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Joined: 27 Sep 2010
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PostPosted: Tue Feb 05, 2013 1:14 pm    Post subject: Easytrieve in Instream or EXEC
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We can code the Easytrieve in Instream (SYSIN) of a JCL.
We can also complile the Easytrieve and give the Load Module in the STEP (EXEC) of JCL.

Is there any difference between the two methods ? Which method is more feasible ?
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enrico-sorichetti

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PostPosted: Tue Feb 05, 2013 1:19 pm    Post subject: Reply to: Easytrieve in Instream or EXEC
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if easytrieve provided the two options it just means that both are feasible

using a compiled object will save at each execution the overhead of compilation
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Bill Woodger

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PostPosted: Tue Feb 05, 2013 1:28 pm    Post subject: Reply to: Easytrieve in Instream or EXEC
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"more feasible" is an interesting concept :-) What might you mean by that?

enrico is spot on.

One reason for the compile'n'run is for a "quick'n'dirty" where the inital establishment of a new program in your source management system can be "put off" until such a time as it doesn't get in the way of producing the results. However, after that, make sure it gets done properly, otherwise there will be a mess in the future ("I know I had that program somewhere" or "I'm from Audit, someone says you changed a file on 3 February in 2006, can you show me what you did?").
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subdalal

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PostPosted: Tue Feb 05, 2013 3:44 pm    Post subject:
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So using the Load Module method will be better. Please let me know if I am wrong. Thanks icon_smile.gif
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Bill Woodger

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PostPosted: Tue Feb 05, 2013 4:09 pm    Post subject: Reply to: Easytrieve in Instream or EXEC
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For a Production program, better, obligatory.

For non-Production, there is some added "convenience" in using SYSIN with DD *, but it is then entirely up to you to "remember" "where did I put that..?", which can be a terrible "payback" for the "convenience".
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Gary McDowell

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PostPosted: Tue Feb 05, 2013 6:55 pm    Post subject:
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In my current IT shop production Easytrieves must be compiled. I do use the SYSIN method for my own quick development runs.
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