•This edition is based on z/OS 2.4, IBM CICS® TS 5.5, and IBM Db2® V12.

•The Sysplex Extensions 2020 environment was built and tested on zPDT GA10. GA10 delivers zPDT support for the new functions delivered in IBM z15™ CPCs. For more information about the various zPDT releases and the z System architecture level they support, see the Introduction chapter of IBM zPDT Guide and Reference System z Personal Development Tool, SG24-8205.

•The Sysplex Extensions 2020 was built and tested on an early test level of the z/VM 7.1 ADCD.

•The installation chapter has extensive updates to reflect the ADCD Level change (Z22C to Z22D), volume serial number changes, and changes to data set names, particularly for the zFS data sets.

•We added sample jobs to help you clean up old IBM DB2® archive log files.

•The CICS CSD was updated in support of service updates to CICS TS 5.2.

•This book assumes that you are doing an install ‘from scratch’. That it, it does not get into detailed discussions about migrating from previous levels. This is consistent with the methodology used by ADCD. However, it does provide additional information that might be valuable for readers that have an existing ADCD environment that they want to carry forward to the May 2017 level.