On 2017-01-17, at 09:11, Jesse 1 Robinson wrote:
> As I pointed out in my earlier post, system symbols have long (always?) been
> honored for STC and TSO proc JCL. The change in 2.1 is to extend this support
> to batch JCL on a job class by class basis. If someone wants a preview of
> what to
-Original Message-
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf
Of Peter Hunkeler
Sent: Tuesday, January 17, 2017 6:32 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: (External):AW: Re: System Symbols (SYSSYM)
> There is one case in which there might be problems. Look
On 2017-01-17, at 08:25, Vernooij, Kees (ITOPT1) - KLM wrote:
> -Original Message-
> From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On
> Behalf Of Paul Gilmartin
> Sent: 17 January, 2017 16:12
> To: IBM-MAIN@LISTSERV.UA.EDU
> Subject: Re: Syst
-Original Message-
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf
Of Paul Gilmartin
Sent: 17 January, 2017 16:12
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: System Symbols (SYSSYM)
On Tue, 17 Jan 2017 08:55:34 +, Mike Shorkend wrote:
>There is one c
On Tue, 17 Jan 2017 08:55:34 +, Mike Shorkend wrote:
>There is one case in which there might be problems. Looking at:
>
>//MYFILE DD DSN=,DISP=(,PASS),UNIT=SYSDA
>
>WIth SYSSYM set to DISALLOW, this will create a valid temporary dataset(JCL
>reference says that you should use a double
> There is one case in which there might be problems. Looking at:
> //MYFILE DD DSN=,DISP=(,PASS),UNIT=SYSDA
When using System Symbols in batch jobs was introduced with z/OS 2.1, I was
always wondering what prompted IBM to define that SYSSYM= switch in the
JOBCLASS definition. I knew there
I see no problem enabling SYSSYM.
You have to take additional actions (JCL CHANGES) for it to have any impact.
> Can anyone see a reason for not enabling System Symbols for all job
> classes (i.e SYSSYM=ALLOW ) ?
>
::DISCLAIMER::
There is one case in which there might be problems. Looking at:
//MYFILE DD DSN=,DISP=(,PASS),UNIT=SYSDA
WIth SYSSYM set to DISALLOW, this will create a valid temporary dataset(JCL
reference says that you should use a double ampersand but a singe works
fine).
WIth SYSSYM set to ALLOW, this will
I can't see any generic reason not to enable system symbols, but like many
changes that IBM has introduced over the years, it could have a deleterious
effect in particular cases. I would not make this change enterprise-wide
without publicizing it and preferably testing extensively.
The