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loadmodules priority in Steplib


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ram_vizag

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Joined: 21 Aug 2008
Posts: 112
Location: hyd

PostPosted: Fri Mar 23, 2018 9:21 pm
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HI All,

I have a very basic question. i searched for but could not find exact answer.

i have 5 version of load libraries in the a steplib and a program(load module) is present in all the verisons(or regions).

so which module will be picked by system , whether the load module from the first loadlib library OR the system will pick the recent time stamped verison of loadlib from all the libraries???

suppose prod loadlib is first and the recent timestamped (say system region) version is in the last ...which one do the system pick for execution?
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Robert Sample

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Joined: 06 Jun 2008
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Location: Dubuque, Iowa, USA

PostPosted: Fri Mar 23, 2018 9:37 pm
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From the z/OS MVS JCL Reference manual (highlighting added by me):
Quote:
Relationship to other control statements

z/OS MVS JCL Reference
SA23-1385-00

Concatenating step libraries: To specify more than one private library for a step:

Code a STEPLIB DD statement.
Immediately follow this statement with DD statements that define other private libraries. Omit a ddname from these subsequent DD statements.

The system searches the libraries for the program in the same order as the DD statements.
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Rohit Umarjikar

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PostPosted: Sat Mar 24, 2018 12:01 am
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Quote:
I have a very basic question. i searched for but could not find exact answer
Steplib concatenation...
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Chetan Kumar

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Joined: 03 Dec 2012
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PostPosted: Fri May 11, 2018 8:55 pm
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If the load is present in the 1st library in the order of concatenation, then it picks up that load irrespective of the time stamp.
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Robert Sample

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PostPosted: Fri May 11, 2018 9:39 pm
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Quote:
If the load is present in the 1st library in the order of concatenation, then it picks up that load irrespective of the time stamp.
This is the same statement as in the manual quote I provided -- what does your post add to that?
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