Upgrading
The upgrading information in the CICS® Transaction Server for z/OS® product documentation provides an overview of changes to CICS externals across releases and explains the actions that you need to take to move what you have today in your current release to new capabilities, whether those are in a whole new release or supplied as service on your existing release. CICS TS upgrading information is provided in full in the latest CICS TS documentation and it contains upgrading information for all releases of CICS TS. The links in this topic take you to the upgrading topics in the latest CICS TS documentation.
Getting started with upgrading
You can upgrade your whole environment, or you can run two versions concurrently. You can also apply new capabilities during a release, known as continuous delivery, by applying service that provides those capabilities.
Changes between releases
The following topics help you understand the impact of changes to CICS TS between versions or releases of the product.
- Major areas of technology change by release of CICS TS
- Changes to installing
- Changes to security
- Changes to RACF classes
- Changes to CICS API
- Changes to JCICS API
- Changes to CICS support for application programming languages
- Changes to CICS web services assistants
- Changes to SIT parameters
- Changes to JVM profiles
- Changes to resource definitions
- Changes to control tables
- Changes to CICS SPI
- Changes to CICS transactions
- Changes to CEMT
- Changes to CICS monitoring
- Changes to CICS statistics
- Changes to CICS utilities
- Changes to global user exits and task-related user exits
- Changes to CICS XPI
- Changes to CICS user-replaceable programs
- Changes to messages and codes
- Changes to samples
- Changes to CICSPlex® SM
- Changes to toggle-enabled features
- Changes to CICS policies
- Summary of changes from end-of-service releases
- Stabilization notices
Upgrading to a higher release of CICS TS
The following topics tell you how to migrate your CICS environment to a higher release, or from Developer Trial to another edition of CICS TS. Each topic covers a different aspect of CICS configuration and summarizes the actions that you need to take to upgrade from one release to another.
- Upgrading from CICS TS Developer Trial
- Upgrading CICS Explorer®
- Upgrading CICSPlex SM
- Upgrading CICS regions
- Upgrading security
- Upgrading the Java environment
- Upgrading applications
- Upgrading applications, platforms, and bundles
- Upgrading IPIC
- Upgrading MRO
- Upgrading connections with IBM® MQ
- Upgrading JSON web services
- Upgrading SOAP web services
- Upgrading from end-of-service releases
Upgrading between releases with CICS continuous delivery
CICS continuous delivery provides new functions, capabilities, and technologies between product releases through the service channel or as separate downloads. To take advantage of such additional functions, apply the service APARs.