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Re: ps dataset
ISTR that SMS will put an EOF at the beginning of a newly allocated
SMS-managed dataset if/when SMS determines that the dataset's DSORG=PS.
No DCB! No EOF!
-
Too busy driving to stop
I thought that's what I said.
If I wasn't clear, I said:
It has to be SMS-Managed.
It has to have a data class.
The data class is NOT required, as long as you specify DSORG=PS in the JCL.
--
Bruce A. Black
Senior Software Developer for FDR
Innovation Data Processing 973-890-7300
personal:
Subject: Re: ps dataset
I thought that's what I said.
If I wasn't clear, I said:
It has to be SMS-Managed.
It has to have a data class.
The data class is NOT required, as long as you specify DSORG=PS in the
JCL.
--
Bruce A. Black
Senior Software Developer for FDR
Innovation Data
AFAIK, if SDB can figure out what the DSORG is from the DCB you also do not
need a DATACLAS.
Sorry, no. The EOF will be written at allocation time (if the DSORG=PS
is specified or derived from the data class), but the DCB is not known
until the dataset is open, too late to write the EOF.
Bruce,
Yeah, that's a brain-fart. We discussed this a few weeks ago...
Ron
-Original Message-
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On
Behalf Of Bruce Black
Sent: Friday, 16 February 2007 12:51 AM
To: IBM-MAIN@BAMA.UA.EDU
Subject: Re: ps dataset
AFAIK
@BAMA.UA.EDU
Subject: Re: ps dataset
Date: Tue, 13 Feb 2007 22:45:42 -0500
On 13 Feb 2007 19:28:48 -0800, in bit.listserv.ibm-main
(Message-ID:[EMAIL PROTECTED])
[EMAIL PROTECTED] (Paul Jodlowski) wrote:
I have a wierd problem, a programmer runs a job that creates a dsn
(tst.report) then he ftp's
If you ONLY do an allocation like an
IEFBR14 and do not open it for output, you will not get the eof record,
I don't believe that is 100% accurate.
If you have a data class (optional under SMS),
the file will be opened by SMS, therebye creating an EOF (iirc).
-
Too busy driving to stop for gas!
This is exactly correct for a non-sms managed dataset. If you do an
allocate and never open the dataset you will not get an EOF. Any old data
at that allocation will be readable with the correct dcb.
--
For IBM-MAIN subscribe /
Hello,
These were recently posted in this thread (about things that can go thud
when a dataset is allocated but not used).
For SMS-managed datasets, this phenomenon goes away as SMS writes an EOF on
the first track on the new dataset.
and
If you did have this under SMS management, you
[mailto:[EMAIL PROTECTED] On
Behalf Of Ted MacNEIL
Sent: Thursday, 15 February 2007 12:11 AM
To: IBM-MAIN@BAMA.UA.EDU
Subject: Re: ps dataset
If you ONLY do an allocation like an
IEFBR14 and do not open it for output, you will not get the eof record,
I don't believe that is 100% accurate
If a dataset is allocated under sms management via JCL/IEFBR14 will it ALWAYS
raise an end of file on the first read? A physical eof is written even though
the dataset was never referenced other than alloc/de-alloc?
Data Class is the only optional construct under SMS.
If you have it defined for
While a DATACLAS can be used to provide attributes for a non-SMS dataset, it
is the presence of a STORCLAS that actually denotes an SMS managed dataset,
which in turn gives you all the good things that come with SMS.
Yes. I know that.
But, the dataset has to be SMS-Managed and have a data class
Ted,
I've searched for a definitive reference on this but nothing turned up
quickly. However, every reference I did find specifies that the EOF is
written for SMS Managed Datasets.
A DATACLAS can be used by both SMS and non-SMS managed datasets, but a
dataset is not SMS managed unless it has a
: ps dataset
02/14/2007 07:44
PM
So I'm led to believe that the presence of a DATACLAS does not cause SMS to
write an EOF when allocating a non-SMS dataset.
I thought that's what I said.
If I wasn't clear, I said:
It has to be SMS-Managed.
It has to have a data class.
I never said that a data class would guarantee an EOF for
ISTR that SMS will put an EOF at the beginning of a newly allocated
SMS-managed dataset if/when SMS determines that the dataset's DSORG=PS.
No DCB! No EOF!
-
Too busy driving to stop for gas!
--
For IBM-MAIN subscribe /
is that DATACLAS is not required, only DSORG=PS for an SMS
Managed Dataset as posted by Tom Puddicombe.
Ron
-Original Message-
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On
Behalf Of Ted MacNEIL
Sent: Thursday, 15 February 2007 9:14 AM
To: IBM-MAIN@BAMA.UA.EDU
Subject: Re: ps
If you have a data class (optional under SMS),
the file will be opened by SMS, therebye creating an EOF (iirc).
I thought I implied SMS.
If I missed a step, sorry.
Consistency is the hobgoblin of little minds.
(8-{}
-
Too busy driving to stop for gas!
On 13 Feb 2007 19:28:48 -0800, in bit.listserv.ibm-main
(Message-ID:[EMAIL PROTECTED])
[EMAIL PROTECTED] (Paul Jodlowski) wrote:
I have a wierd problem, a programmer runs a job that
creates a dsn (tst.report) then he ftp's it down to a
server and then uncat/deletes it.
Later on he runs the
I suspect this is a problem (phenomenon? -- some think it's a feature) that
has been discussed here at some length in the past few weeks. DFSMS is
creating the dataset in the same location as before, and the same data is
still there. Don't know enough about ISPF edit internals to know why it
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