Zedc dataset compression using JCL

0
votes

What is zEDC dataset compression? How can we apply compression on our mainframe datasets. What are the DATACLAS parameter values used for zEDC compression.

Please help

Thanks, Sunitha S

2
mainframejcl
Welcome to stackoverflow.com. Please take some time to read the help pages, especially the sections named "What topics can I ask about here?" and "What types of questions should I avoid asking?". Also please take the tour and read about how to ask good questions. Lastly please learn how to create a Minimal, Complete, and Verifiable Example. - cschneid
A search with Google turns up a number of IBM sites that look promising, along with some SHARE presentations which are usually quite excellent. In any case, the proper first step is to discuss with your z/OS Systems Programmer and Storage Administrator. - cschneid

2 Answers

0
votes

DATACLAS names are installation-dependent. As @cshneid said you'll probably have to talk to your local storage administrator / system programmer. Or, if you have access to ISMF, you can look for dataclasses that have the compaction parameter set to ZEDC Required (ZR) or ZEDC Preferred (ZP).

Note that there are multiple system configuration things that need to be done to enable the actual utilization of zEDC. So again, talking to the local experts is really the best/recommended approach.

0
votes

I agree with randomScott. You can get in touch with you system administrator to get info on dataclas and msgclass.

One quick way i used to follow is, put 'Z' in front of dataset and enter. Your pds will be compressed. This works only when none of the user are accessing that particular pds.