CICS / WebSphere

Are your OS/390 applications experiencing virtual storage constraints? If you don’t know and don’t know how you can find out, then this article is for you. Some applications, such as DB2, use a tremendous amount of “above the line” virtual storage. If the virtual storage consumption is not monitored, you could unexpectedly experience virtual storage constraints, leading to application failures. Monitoring virtual storage consumption is one step you can take toward proactive capacity planning in your environment. This article will demonstrate how you can use IBM’s RMF product to monitor the virtual storage utilization of specific address spaces running on your system…

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The increased pressure to get more value out of IT and to reduce related costs has pushed many companies to deliver business systems and applications by acquiring commercial-off-the-shelf (COTS) products and packages. This shift from “build” to “buy” has produced good results for many companies. However, this change has also adversely affected how some organizations make decisions about which products to acquire…

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CICS has undergone many changes since its inception more than 30 years ago. During that time, IBM has continually enhanced the product and enabled it to exploit new features in the underlying operating system and in other subsystems running alongside CICS. IBM has also restructured various components within CICS during its lifetime. Since the days of CICS/ESA Version 3, the internal structure of CICS has been managed by a series of domains. A domain is similar to the concept of a class in object-oriented programming languages, as it has clearly defined interfaces and executable code, and is responsible for managing any data that relates to that particular component. This encapsulation of data and function helps improve the reliability, extendibility, and serviceability of the product as a whole. Since CICS/ESA Version 3, different components of CICS have been restructured into their own domains. The CICS Log Manager is one such component. It was introduced in the first release of CICS Transaction Server Version 1 and replaced the older journal control management programs.

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It’s often a challenge to come up with an efficient architecture for running WebSphere applications on Linux for zSeries. Such systems consist of zSeries mainframes running VM and multiple Linux guests, each running WebSphere and customer applications. With all of these components involved, it gets a little complicated ensuring that everything works together optimally. This article provides the basics you need to get started as well as additional references…

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CICz: Enhancements You May Not Have Noticed

Is your site in the process of installing, or planning to install, CICS TS 2.2 but you are still running CICS TS 1.3? Well, this version contains several enhancements that were delivered since your site originally installed CICS TS 1.3. If your site is planning to run a great deal of business on 1.3 for a while, or if you’re interested in the new features since 2.2 was originally announced, here are some changes that have been delivered via the service process.

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