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IBM z/OS Consolidated Service Test and the RSU

z/OS Consolidated Service Test - recommended service levels.

As part of IBM's commitment to quality and continuous improvement, we established an additional service testing environment called Consolidated Service Test (CST). As a result, we redefined our RSU (Recommended Service Upgrade) for the z/OS platform so that it contains service that has been through CST testing with all the current PTFs for these products listed together. We can now recommend PTF service for z/OS and key subsystems together in one RSU sourceid to all z/OS customers, free of charge.

  • CICS Transaction Gateway for z/OS
  • CICS Transaction Server for z/OS
  • DB2 for z/OS
  • Geographically Dispersed Parallel Sysplex (GDPS/PPRC) (GDPS/XRC)
  • IMS
  • IRLM
  • JAVA
  • WebSphere Application Server for z/OS
  • WebSphere MQ for z/OS
  • z/OS
  • IBM Tivoli (products listed in quarterly report)
  • IBM Security Guardium S-TAP for DB2, IMS and Data Sets on z/OS
  • z/OS Management Facility

Note: For a complete list of products/tools and levels tested, please consult the Quarterly report (PDF,174KB) , specifically the What Service was Installed section.

We test on a quarterly cycle, providing quarterly recommendations and monthly delta recommendations for customers needing more frequent maintenance updates. The table below shows our most recently tested service updates:

Month/Year Service Available RSU Sourceid
April  2019  
1st Quarter
Quarterly report (PDF,174KB)
All service through the end of December 2018 not already marked RSU. PE resolution and HIPER/Security/Integrity/Pervasive PTFs and their associated requisites and supersedes through February 2019. RSU1903
May 2019  
1st Quarter
Quarterly report 1st addendum (PDF,45KB)
Based upon the quarter above, this addendum contains PE resolution or HIPER/Security/Integrity/Pervasive PTFs and their associated requisites and supersedes through March 2019. RSU1904

For additional information or comments, please contact the IBM Consolidated Service Test Team.

Look here for past RSUs which we've tested.

CST testing is performed in addition to existing testing programs and does not replace any current testing performed by the products.

Please note that the service recommendations we make on this Web site are based on testing in our own environment. Your environment and applications will differ, and therefore, your results may also. All of the information, download files, and recommendations are provided on an "AS IS" basis without warranties of any kind, express or implied, including without limitation any implied warranties of merchantability, fitness for a particular purpose or title. Reliance on this document is at the customer's sole risk and IBM will not be liable for any damages, direct or indirect, in connection with this Web site or actions taken based on the recommendations made on this Web site.

Note also that consolidated service test does not change the mechanism for reporting problems. If you encounter a problem with product code, you can report the problem to IBM Support.

Document information

More support for: z/OS

Component: --

Software version: 7.0, 8.0, 9.0

Operating system(s): z/OS

Reference #: T1027575

Modified date: 04 May 2019