Zhang
Sent: Tuesday, April 10, 2012 6:01 PM
To: IBM-MAIN@bama.ua.edu
Subject: Re: Questions regarding SMS compacted dataset
Chris,
Thanks for the reply.
Using dss is to back extended files to tape/virtual tape.
Your answer said the data read will be expanded. So even by setting compact
as N
Yifat,
Thank you very much, very help.
One more question:
Does both physical dump and logical dump NOT decompress extended compacted PS
dataset
OR
Does physical dump NOT decompress extended compacted PS dataset
OR
Does copy decompress extended compacted PS dataset?
Regards
Victor
On Wed, 11 Apr 2012 12:53:22 +0300, Yifat Oren wrote:
Other utilities, such as IEBGENER. have to decompress the data set as they
are doing a record by record, logical, copy (this may not be true for IDCAMS
when using the compression interface, see II14507).
Is this done by the utility (ugh!) or
Access method
snip
Other utilities, such as IEBGENER. have to decompress the data set as
they
are doing a record by record, logical, copy (this may not be true for
IDCAMS
when using the compression interface, see II14507).
Is this done by the utility (ugh!) or by the access method?
/snip
-format data set (on tape).
Best Regards,
Yifat
-Original Message-
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On Behalf
Of Victor Zhang
Sent: Wednesday, April 11, 2012 3:52 PM
To: IBM-MAIN@bama.ua.edu
Subject: Re: Questions regarding SMS compacted dataset
Yifat,
Thank
@bama.ua.edu] On Behalf Of
Victor Zhang
Sent: Monday, April 09, 2012 11:46 PM
To: MVS List Server 1
Subject: Re: Questions regarding SMS compacted dataset
Hi all,
Sorry, forgot to mention is if the program trying to read compressed extended
physical sequential file is ADRDSSU, will only compressed data
Chris,
Thanks for the reply.
Using dss is to back extended files to tape/virtual tape.
Your answer said the data read will be expanded. So even by setting compact as
N, the amount of data written to tape/virtual tape will be same, right?
My another question is:
If I set compact=N for storage
On Tue, Apr 10, 2012 at 10:00 AM, Victor Zhang
victor_wor...@yahoo.com.cn wrote:
deleted
I already noticed a difference:
By enabling compact option in storage class, I have very low compression
ratio for data written to tape/virtual tape, do you have any idea?
Regards
Victor
You are
In each case when you copy dataset from DASD to TAPE ar vice versa, the
data in transit are uncompressed. Compression/lack of compression on
source/target doesn't matter.
--
Radoslaw Skorupka
Lodz, Poland
W dniu 2012-04-10 17:00, Victor Zhang pisze:
Chris,
Thanks for the reply.
Using dss
Hello,
One simple question#65306;
If the PS data set's SC is defined with COMPACT= YES, then when host read the
file, will the PS data be rehydrate or not? I mean will uncompressed data be
return to z/os?
Regards
Victor
--
For
Hi all,
Sorry, forgot to mention is if the program trying to read compressed extended
physical sequential file is ADRDSSU, will only compressed data be returned?
How about IEBGEN program?
Regards
Victor
--
For IBM-MAIN
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