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IBM CICS and the Coupling Facility: Beyond the Basics

by Arndt Eade, Randy Frerking, Rich Jackson, Kellie Mathis

February 2018

Intermediate to advanced

76 pages

2h 22m

English

IBM Redbooks

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1.1 Coupling Facility defined1.1.1 Coupling Facility structures1.1.2 Coupling Facility placement1.2 Historical uses of Coupling Facility structures1.3 Newer functions of the CF structures1.4 Benefits of reading this book1.4.1 Design developer benefits1.4.2 Application programmer benefits1.4.3 System programmer benefits1.5 Client experience1.5.1 Walmartâ€™s experience1.5.2 Walmartâ€™s references1.6 Moving forward
2.1 General use of VSAM RLS in CICS2.2 Setting up VSAM RLS in CICS2.2.1 Changes to CICS parameters to support RLS2.2.2 Altering file definitions to enable RLS access2.2.3 Application considerations when using RLS2.3 Uses of VSAM RLS in CICS2.3.1 Eliminating file owning regions2.3.2 Improved scalability
3.1 Common uses of named counters3.2 Setting up named counters3.2.1 Defining resources to the CF3.2.2 Creating the named counter server3.2.3 Changes to CICS to access the named counters server3.2.4 Creating and accessing a named counter3.3 Examples of named counter use3.3.1 Generating a unique ID3.3.2 Generating components of keys3.3.3 Distributing the workload and resources3.3.4 Tracking activity
4.1 Common uses of CICS global enqueues4.2 Setting up global enqueues in CICS4.3 Use cases for CICS global enqueues4.3.1 Global transaction class4.3.2 Serialization for dispatched tasks4.3.3 Enqueue list
5.1 Common uses of CFDTs5.2 Setting up CFDTs5.2.1 Defining resources to the CF5.2.2 Creating the CFDT server5.2.3 Defining CFDTs in CICS5.2.4 Accessing CFDTs5.3 Examples of CFDT use5.3.1 Caching information5.3.2 Logging work items5.3.3 Flexibility for data stores
6.1 Common uses of temporary storage6.2 Setting up shared temporary storage6.2.1 Defining resources to the CF6.2.2 Creating the shared TS server6.2.3 Changes to CICS to access the shared TS server6.3 Use cases for shared temporary storage6.3.1 Adjusting priority based on HTTP method6.3.2 Sharing data among tasks
7.1 Affinities7.2 Sequencing captured updates for data synchronization solution7.2.1 CFDT and VSAM RLS data stores7.2.2 Global resource serialization7.3 Processing one-to-many parallel requests7.3.1 Shared TS queues7.3.2 GRS7.3.3 CFDT7.4 Tiered data store options7.5 Assist parallelization of downstream processing7.6 Using other CF resources7.6.1 Shared queues7.6.2 Workload Manager-managed sysplex distribution7.7 Summary

Content preview from IBM CICS and the Coupling Facility: Beyond the Basics

Combined functional use

Each of the IBM Coupling Facility (CF) features discussed previously in this book can be used in interesting, and sometimes unconventional, ways. The use of these features can also be combined in various ways to provide solutions for any number of issues that you might need to address.

This chapter covers some examples of combining CF features to tackle a few assorted challenges. It includes the following topics:

•Affinities

•Sequencing captured updates for data synchronization solution

•Processing one-to-many parallel requests ...

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ISBN: 9780738443041Purchase book