CICS / WebSphere

CICS/DLI systems programmers, secure in the knowledge they could safely ignore the CICS Open Transaction Environment (OTE), have had a rude awakening. With the implementation of support for threadsafe Database Control (DBCTL) under CICS TS 4.2, IBM has brought the benefits (and risks) of OTE to the CICS/DLI community…

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Author’s Note: This article reflects on the many years of CICS technical support and what it was like for the pioneers of early releases. Many of you will fondly remember what we went through, and hopefully, the more recent supporters of CICS will appreciate how far the product has come. It’s been a privilege to meet many talented, dedicated customers and IBMers through the years, but now it’s time for me to pass along insights into the simple inner workings of CICS and how we got to where we are…

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In the March/April 2011 Mainframe Executive article, “Efficient Business Processing With Batch Modernization,” we explained the term “modern batch” and offered insights into why there’s a growing need to modernize batch processing. This article builds on that and explores IBM's Java batch product offering: WebSphere Compute Grid (WCG)…

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Applications that cross computing platforms or share processes and data with other applications communicate through a complex middleware layer. This middleware layer has traditionally been a software component, with IBM WebSphere MQ as the dominant platform. Now the IBM DataPower XI50 appliance provides middleware services as hardware. As DataPower appliances become more popular, IT organizations are supplementing their middleware structure with the functionality available in the DataPower boxes…

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CICS Explorer was first released as a SupportPac nearly three years ago. Since then, it has continued to evolve, giving users a modern, intuitive, consistent interface to configure, administer, and create CICS applications. The first product release, CICS TS V4.1, covered a subset of CICS system administration topologies, providing access to Business Application Services (BAS) and CICS System Definitions (CSDs) for both standalone and CICSPlex System Manager (SM)-managed regions. During development of CICS Transaction Server (TS) V4.2, CICS Explorer was included in the design of each new function, consolidating its role as “the new face of CICS.” This article discusses the latest innovations in the product, which ensure that CICS Explorer will be increasingly valuable to CICS users…

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ISPF Power Tools

Keeping up with changes to ISPF can be well worth a little effort. When you encounter a new release of ISPF, the first thing you should do is check out the “Changes for this release” Help option, paying particular attention to the Program Development Facility (PDF) section. The PDF component of ISPF includes general user tools such as data set lists (option 3.4 and the DSLIST command), member lists, the ISPF editor, etc…

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How can you provide reliable, consistent access to your CICS servers? The High Availability (HA) functionality provided in z/OS, CICS Transaction Gateway (CICS TG), and CICS Transaction Server (CICS TS) supports duplication of services. This duplication removes single points of failure in the system while simultaneously projecting a single system to users. Choosing the topology used to create a highly available system will depend on the technology available and where redundancy is required. Why create a highly available topology?…

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