zOS 1.13 to zos 2.1 changes for programmers.

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Technocrat
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zOS 1.13 to zos 2.1 changes for programmers.

Post by Technocrat » Mon Nov 13, 2017 9:59 pm

Hi,

Could someone please help me in getting the zOS 1.13 to zos 2.1 changes for COBOL programmers or application developers?

I have made searches online and all the links talking about system level changes, like this search:

https://www.google.co.in/search?client= ... JGtBY3ZGQ0


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enrico-sorichetti
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Re: zOS 1.13 to zos 2.1 changes for programmers.

Post by enrico-sorichetti » Mon Nov 13, 2017 10:28 pm

I do not see how a COBOL only programmer would be concerned by system changes
in a well managed organization they should be screened on the system details

most probably what will change is the version/level of cobol ,
so, why not start by looking at the manual
Enterprise COBOL for z/OS
Migration Guide
Version X Release Y
where obviously X and y relate to the cobol that will be installed on the 2.1 system

and naturally the same for DB2


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enrico
When I tell somebody to RTFM or STFW I usually have the page open in another tab/window of my browser,
so that I am sure that the information requested can be reached with a very small effort 8-)

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Robert Sample
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Re: zOS 1.13 to zos 2.1 changes for programmers.

Post by Robert Sample » Mon Nov 13, 2017 10:32 pm

IBM is careful to ensure backwards compatibility -- what works for COBOL and applications on z/OS 1.13 will continue to work on 2.1 (and usually further on). There often is an upgrade to the newer version of COBOL included with an operating system upgrade, but that does not always occur -- it is pretty much up to the site support group to determine. If there is such an upgrade, some of the compile options change but the code that runs on the old version will continue to run on the new version.

There are new features available on 2.1 (such as in-stream use of symbols), but frequently they require the site support group to make specific changes to allow them to work. Your best bet is to work with your site support group to understand what is new and how it works AT YOUR SITE. Really, almost 100% of the time the operating system can be upgraded and the impact to application developers will be ... NOTHING!




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Technocrat
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Re: zOS 1.13 to zos 2.1 changes for programmers.

Post by Technocrat » Tue Nov 14, 2017 4:38 pm

enrico-sorichetti wrote:
Mon Nov 13, 2017 10:28 pm
I do not see how a COBOL only programmer would be concerned by system changes
in a well managed organization they should be screened on the system details
I used COBOL programming as an example. As an application developer we'll be using JCLs and other tools so was interested in them. Like in zOS 2.1 we can use instream data in PROC. So question, is there is a manual which lists such changes?


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Technocrat
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Re: zOS 1.13 to zos 2.1 changes for programmers.

Post by Technocrat » Tue Nov 14, 2017 4:41 pm

Robert Sample wrote:
Mon Nov 13, 2017 10:32 pm
IBM is careful to ensure backwards compatibility -- what works for COBOL and applications on z/OS 1.13 will continue to work on 2.1 (and usually further on). There often is an upgrade to the newer version of COBOL included with an operating system upgrade, but that does not always occur -- it is pretty much up to the site support group to determine. If there is such an upgrade, some of the compile options change but the code that runs on the old version will continue to run on the new version.

There are new features available on 2.1 (such as in-stream use of symbols), but frequently they require the site support group to make specific changes to allow them to work. Your best bet is to work with your site support group to understand what is new and how it works AT YOUR SITE. Really, almost 100% of the time the operating system can be upgraded and the impact to application developers will be ... NOTHING!
Thanks Robert.

It is out of curiosity to know such difference. Actually most of the documents I look at are talking about system level changes and not really talk about application programmer. For example, in-stream use of symbols can impact application programmers too but yes I agree it depends on coding standard but I wanted to know it all in general.


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enrico-sorichetti
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Re: zOS 1.13 to zos 2.1 changes for programmers.

Post by enrico-sorichetti » Tue Nov 14, 2017 5:02 pm

I used COBOL programming as an example
if You wanted to know in general why did You not tell so from the beginning :twisted:

the same logic applies for every product, every new version/release has a manual regarding the migration considerations

here is the link for zOS 2.1
https://www-03.ibm.com/systems/z/os/zos ... grate.html

but You could have found it Yourself by googling simply with zOS migration gude


cheers
enrico
When I tell somebody to RTFM or STFW I usually have the page open in another tab/window of my browser,
so that I am sure that the information requested can be reached with a very small effort 8-)


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Technocrat
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Re: zOS 1.13 to zos 2.1 changes for programmers.

Post by Technocrat » Wed Nov 15, 2017 5:38 pm

Sorry if it was not obvious. But I am still not able to figure out it, that's a migration guide. I am looking for like "application level changes"... will look more for it.


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enrico-sorichetti
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Re: zOS 1.13 to zos 2.1 changes for programmers.

Post by enrico-sorichetti » Wed Nov 15, 2017 6:39 pm

"application level changes"...
in the common terminology the above means changes to the program sources
as already explained a system upgrade very seldom implies changes to the PURE application programs

IMNSHO a jcl change to profit from the new opportunities does NOT fall into the application change category
the application will keep running using the old approach
( procedures written 40 years ago still work )

topic is going down the toilet, the TS does not himself know what he wants
will be locked shortly


cheers
enrico
When I tell somebody to RTFM or STFW I usually have the page open in another tab/window of my browser,
so that I am sure that the information requested can be reached with a very small effort 8-)

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