bububut wrote:
Hi All,
I am new to Mainframe (get to learn Mainframe about 3 months ago). I
find it amazing and interesting exploring the mf world. But I have met
many problems as well. Lucky to find here to put my questions^
One of them is: How to add (or remove) libraries to an existed dataset
concatenation? I do not want to disturb other libraries already in the
concatenation. Is there any command or utility that can do this?
Thanks in advance for your help!
Wei
Welcome to the mainframe world, Wei. Where are you
located? It's nice to know there are people jumping
into the z/OS world (I assume you are talking about
z/OS, but you need to be aware that there are a
number of mainframe operating systems and it's
always a good idea to specify which one you are
talking about).
Your question is a little odd because you did not
specify a context. Data sets in and of themselves
do not exist in a concatenation. But when you run
a job or started task it is usually done using
JCL; in JCL you can concatenate a string of data sets
to belong under the grouping of a single DD name: but
that is only in the context of that job or task.
You can create a concatenation dynamically with
the TSO allocate command or calls to various system
services; again, such a concatenation exists only
in the context of the program issuing the command
or calls.
Under z/OS UNIX in some situations (e.g., the STEPLIB
environment variable) you can create a concatenation
of libraries. But, once again, the concatenation only
has signficance to the process where the environment
variable is used.
How you change a concatenation depends on how the
concatenation is built: by JCL, by commands. or by
setting an environment variable.
Given that, can you tell us more specifically what
you are after?
--
Kind regards,
-Steve Comstock
The Trainer's Friend, Inc.
303-393-8716
http://www.trainersfriend.com
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