MVSFORUMS.com :: View topic - A query on new RESIZE operator of DFSORT's ICETOOL.

MVSFORUMS.com Forum Index

MVSFORUMS.com
A Community of and for MVS Professionals

FAQ

Register

Log in to check your private messages

A query on new RESIZE operator of DFSORT's ICETOOL.

printer-friendly view

MVSFORUMS.com Forum Index -> Job Control Language(JCL)

View previous topic :: View next topic

Author

Message

Anuj Dhawan
Intermediate

Joined: 19 Jul 2007
Posts: 298
Topics: 7
Location: Mumbai,India

Posted: Tue Nov 16, 2010 3:39 am Post subject: A query on new RESIZE operator of DFSORT's ICETOOL.

Reply with quote

1. Using this,

Code:

RESIZE FROM(LARGE) TO(SMALL) TOLEN(80)

I can get a lower LRECL. But I had been using "hard-coded" LRECL on DCB of SORTOUT in my Jobs for this very purpose. Does RESIZE do something different than that ot it's jusr other way to get to that?

2. When we use:

Code:

RESIZE FROM(80) TO(LARGE) TOLEN(480)

what is "newly added length" is padded with? I spent some time on this here http://www.ibm.com/support/docview.wss?rs=114&uid=isg3T7000242 but missed to find the answer. I hope I've used the correct link for what I was searching for.

Thanks for stopping by,
_________________
Regards,
Anuj

Send private message

kolusu
Site Admin

Site Admin

Joined: 26 Nov 2002
Posts: 12376
Topics: 75
Location: San Jose

Posted: Tue Nov 16, 2010 11:36 am Post subject:

Reply with quote

Anuj Dhawan,

Did you read the PDF document?

Quote:

I can get a lower LRECL. But I had been using "hard-coded" LRECL on DCB of SORTOUT in my Jobs for this very purpose. Does RESIZE do something different than that ot it's jusr other way to get to that?

With Hard coded LRECL value in the JCL you are actually TRUNCATING records.

ex: assume you have 40 byte input file like this

Code:

----+----1----+----2----+----3----+----4
FIRST 10B NEXT 10BY 3RD SET10 4TH SET BY

If you hard coded 10 as LRECL in the JCL for sortout your output looks like this

Code:

----+----1
FIRST 10B

The last 30 bytes are truncated in the output.

But if you use RESIZE operator of ICETOOL like this

Code:

RESIZE FROM(IN) TO(OUT) TOLEN(10)

The output would be

Code:

----+----1
FIRST 10B
NEXT 10BY
3RD SET10
4TH SET BY

The 1 record is split into 4 records each with 10 bytes.

The reverse of this is works the same way. Assuming you have 4 records in a file with an LRECL 10 , if you hard code 40 as Sortout LRECL you would have 10 bytes followed by 30 binary zeroes on each record.

Code:

FIRST 10B
NEXT 10BY
3RD SET10
4TH SET BY

However if you use RESIZE operator of ICETOOL like this

Code:

RESIZE FROM(IN) TO(OUT) TOLEN(40)

The output would be 1 record with 4 records clubbed as a single record.

Code:

----+----1----+----2----+----3----+----4
FIRST 10B NEXT 10BY 3RD SET10 4TH SET BY

The white paper explains the same with examples.

Further if you have any questions please let us know
_________________
Kolusu
www.linkedin.com/in/kolusu

Send private message

Send e-mail

Visit poster's website

Anuj Dhawan
Intermediate

Joined: 19 Jul 2007
Posts: 298
Topics: 7
Location: Mumbai,India

Posted: Wed Nov 17, 2010 8:50 am Post subject:

I interpreted the meaning of text, I read, pretty different and apparently wrong. I sincerely apologize for that. Thanks for your explanation, this makes sense now - hope it was not a bother. _________________ Regards, Anuj

Send private message

Display posts from previous:

	MVSFORUMS.com Forum Index -> Job Control Language(JCL)	All times are GMT - 5 Hours
Page 1 of 1

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum

MVSFORUMS
Powered by phpBB © 2001, 2005 phpBB Group