: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: VSAM-RLS and DFSMStvs basic questions
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"BTW: Few questions
Where can I read about VSAM SHR (4 x)?
Was SHR (4 x) available on MVS or its predecessor?
Is there any "introduction" of VSE disks usage, datasets, and so called
file system? How is it similar to z/OS?"
You can read about VSAM on VSE in the VSE guides.
SHR(4 x) was available o
"For example I don't know what is partition in VSE and how it is differ
from regular address spaces or just several jobs (in VSE) working with
same shared VSAM file."
Think of the flat 16MB address space, on IBM 370. Now think about a machine
that has say 512K of RAM in that address space.
So, y
W dniu 31.10.2020 o 00:40, Joe Monk pisze:
Radoslaw,
He is asking about shareoption (4 x) not (x 4) aka cross-region sharing,
not cross-system sharing.
In VSE, Shareoption(4) allows vsam file sharing among partitions (similar
to a z/os address space). VSE manages that automatically, for the u
: Friday, October 30, 2020 4:41 PM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: (External):Re: VSAM-RLS and DFSMStvs basic questions
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Radoslaw,
He is asking about shareoption (4 x) not (x 4) aka cross-region sharing, not
cross-system
Radoslaw,
He is asking about shareoption (4 x) not (x 4) aka cross-region sharing,
not cross-system sharing.
In VSE, Shareoption(4) allows vsam file sharing among partitions (similar
to a z/os address space). VSE manages that automatically, for the user.
Joe
On Fri, Oct 30, 2020 at 6:22 PM R.
W dniu 30.10.2020 o 23:51, Tony Thigpen pisze:
All,
I have a z/VSE client that believes it is time to move to z/OS. But,
they have one big concern. They have a lot of ShareOption=4 VSAM files.
For those that don't know it, ShareOption=4 files on z/VSE "work out
of the box" without any need f
"In their case, they use shareoption=4 so that they can update VSAM files
from batch Cobol programs while at the same time CICS Cobol programs are
also updating the files. They don't want to have to change their programs."
How do you plan to make that happen since in usually z/os CICS journals the
I believe you're on the right path. VSAM RLS requires a coupling facility for
its lock and cache structures, and DFSMStvs is a priced feature of z/OS too.
Mark Jacobs
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Another option:
https://ftpdocs.broadcom.com/cadocs/d0/d93e.pdf
On Fri, 30 Oct 2020 at 22:51, Tony Thigpen wrote:
> All,
>
> I have a z/VSE client that believes it is time to move to z/OS. But,
> they have one big concern. They have a lot of ShareOption=4 VSAM files.
>
> For those that do
All,
I have a z/VSE client that believes it is time to move to z/OS. But,
they have one big concern. They have a lot of ShareOption=4 VSAM files.
For those that don't know it, ShareOption=4 files on z/VSE "work out of
the box" without any need for the application program to perform any
enque
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