CICSdev Home Welcome to the CICSdev community, the place to discuss, share and learn about developing for CICS. In this community you will find the latest CICS news, as well as information and education directly aimed at developers. Use the forums to discuss recent developments, share your opinions and get help from the experts. Blog - Visit the blog to read about CICS news and gain an insight into upcoming developments Download - Here you can download the latest free offerings from CICSdev and see what's available from... [More]
I've just got back from SHARE in Atlanta where it was great to see a lot of interest around the CICS Explorer. One of the things that a lot of people wanted to know was simply how to get started and get connected to either a single CICS region or CICS Plex. So I decided to post a quick guide here which I hope you'll find useful! Step 1: Download and install the CICS Explorer from: www.ibm.com/cics/explorer Step 2: Set up the CICS Management Client Interface (CMCI) on the CICS region you want to connect... [More]
Did you know the CICS Explorer SDK not only includes a great development environment for Java, but also a remote debugger? Quick guide to starting a debug session: Ensure the JVMSERVER resource used by your Java application is disabled, or not yet installed. Add the following two lines to the JVM profile. -Xdebug -Xrunjdwp:transport=dt_socket,server=y,address=27508,suspend=n Change the "address=" option to a IP port number on z/OS that is not already being used, the default CICS region userid is authorised to open, and... [More]
Memory leaks in Java programs are just as much of an issue as they are for programs written in any other language. Despite the garbage collector (GC), there are situations where the GC cannot remove objects because they are still referenced. The first problem is identifying a memory leak and the second problem is locating the class responsible. This post will show you, how to identify and locate a memory leak in a Java program running in the JVM server in CICS. Overview One of the advantages of using Java as a programming language is that... [More]
This article explains how to provide a web-based installation of CICS Explorer. This is useful for system administrators who want to deploy the software to multiple desktops and provide automatic updates.
by Dave Nice, Steve Bolton, and Nick Bishop - IBM CICS Explorer Development https://www.ibm.com/developerworks/mydeveloperworks/blogs/aimsupport/entry/deploy_cics_explorer_using_java_web_start?lang=en... [More]
Take a look at the new Redpaper - IBM CICS Performance Series: CICS, DB2 and Thread Safety. It highlights the findings of a study about the factors that affect the performance of CICS transactions that access IBM DB2 resources through the CICS DB2 attachment facility.
ITSO have just published the public review draft of a new IBM RedBooks publication: Architects Guide to CICS on System z. The abstract reads: CICS Transaction Server (CICS TS) has now been available in different guises for over 40 years, and continues to be one of the widely used pieces of commercial software. This IBM Redbooks publication helps application architects discover the value of CICS Transaction Server to their business. This book provides a broad understanding of the value and capabilities of CICS Transaction Server and the... [More]
We can now formally announce that CICS TS V3 will reach End of Service in December 2015 . For more information - http://www-01.ibm.com/common/ssi/cgi-bin/ssialias?infotype=an&subtype=ca&supplier=897&letternum=ENUS913-075
31 st December 2015 is a sad day. On the first day of 2016 CICS version 3 will go out of service. For more information see here: http://www-01.ibm.com/common/ssi/cgi-bin/ssialias?infotype=an&subtype=ca&supplier=897&letternum=ENUS913-075 CICS version 3 will always be a special release for me as it was the first CICS release I ever worked on. I was a member of the functional test team for the web services functionality. I spent many a day (and a few nights) building and executing test cases to try and find fault with the... [More]
In the fall of 2012, I had the opportunity to return to the United Kingdom after 36 years. My initial visits were very quick, since the United States Navy would only allow you on shore for a short period. Nevertheless, my thoughts of the UK were still centered around the days of King Arthur ...leading up to the James Bond 007 era. Then there was my remembrance of William Shakespeare, the greatest poet and playwright ever and William Wilberforce, an English politician and philanthropist that led the movement to abolish the slave trade and most... [More]
Mother's Day weekend is always a great opportunity to honor Mom and perform a host of chores around her house. This particular weekend, Mom required her house to be painted and as a good son should, I responded ,"Let's Git-R-Done " ...as Larry the Cable Guy would say. To begin, I saw Mom break-out the paint and a couple of paint brushes. Immediately, it dawned on me how Mom would pull out paint brushes when I was a small lad to teach and discipline me to pay attention to details. Well, not this time, I went to the local... [More]
On Friday June 14 we GAed z/OS Explorer V2.1 and CICS Explorer V5.1.1, that is to say, they became generally available for download. That wasn't all - we also made our new repository of compatible plug-ins available, with plug-ins for five CICS Tools, five IBM Problem Determination Tools, IBM Data Studio, Rational Team Concert, a 90-day trial version of Rational developer for System z. I've been the marketing manager for CICS Explorer, and more recently, z/OS Explorer, for over five years now, so I obviously have an interest. When... [More]
CICS PA Plugin (Targeted thinking) In the latest version of the CICS PA plug-in we have attempted to bring a new approach to CICS performance monitoring and assessment. Traditionally users of CICS Performance Analyzer are performance system experts who have honed their skills over many years and have evolved a wealth of knowledge of keeping their CICS systems well balanced and ways of spotting problems before they have a detrimental affect to overall system performance. We are currently distilling this knowledge and experience into the CICS PA... [More]
Writing RESTful web services using a CICS Liberty JVM server - Part 1 Introduction My name is Daniel Fitzgerald, I'm a trainee software developer in the CICS team based at IBM Hursley UK. I've been working for the last six months on the Mobile Extensions Feature Pack V1.0 for CICS Transaction Server. As part of the project we looked at using JAX-RS, JSON and RESTful designs within Liberty. This article, coming in two parts is the result of these investigations. The CICS Liberty server is a web container technology based on... [More]
Writing RESTful web services using a CICS Liberty JVM server - Part 2 Introduction My name is Daniel Fitzgerald, I'm a trainee software developer in the CICS team based at IBM Hursley UK. I've been working for the last six months on the Mobile Extensions Feature Pack V1.0 for CICS Transaction Server. As part of the project we looked at using JAX-RS, JSON and RESTful designs within Liberty. [Edit: This article was updated 11 September 2013 by Mark Cocker to clarify the pre-requisites and update the download zip file.] This article... [More]
Hidden in the release notes for the latest CICS Explorer V5.1.1 you will see an enhancement that provides the “Ability to edit a CICS Platform project, CICS Application project, or CICS Application Binding project”. The required server-side APAR PM81540 is now available. These new editors are a significant improvement to the user experience of working with CICS Applications, CICS Bindings and CICS Platforms so if you are interesting in the cloud enablement capability in CICS TS V5.1 please try out these downloads.
In CICS TS V5.1 we introduced Policy . This is a set of one or more rules each setting a threshold for resource consumption and specifying an action to be taken when it’s exceeded. You can set limits on CPU consumption and storage use as well as DB2 and VSAM file accesses. The actions CICS can take are to issue a message, abend the task or emit a system event . The last action allows you create or extend automation to perhaps send an email or SMS when an application starts behaving badly.
Electronic mail has become an effective form of communication widely used in our private lives and dealings with businesses, governments, and other organizations. For example customers now expect confirmation and status of orders, account alerts, and availability of statements to be sent within minutes via email. Email strikes a balance between the expense and delay of physical post, and the more immediate but temporary nature of SMS. As many of today's transactions are hosted in CICS Transaction Server (CICS), it is not surprising the need... [More]
Some of you will have seen me present this picture as part of how I explain our objectives for the new Application and Platform capabilities being created in Version 5 of CICS TS. These two concepts are major foundations for our move to enable to faster and simpler deployments - as valuable outcomes in the strategic Cloud initiative. I typically start by explaining that this is definitely a vision of the future - we're at the start of a journey to a time when this sort of scenario may be business-as-usual, but it we don't start now then... [More]
When we talk to customers about z/OS Explorer and CICS Explorer we get a lot of positive vibes. There's talk of how it can help their teams, how it can simplify some of their tasks, and sometimes how they want to extend it with plug-ins they already use. When we get onto discussing how it can be deployed to their teams, the concepts sound good in theory but we've seen that people of get confused, in practice. This is compounded because of the large number of ways it can be installed (to cater for the difference needs of different... [More]
Over the past five years the CICS Transaction Gateway team have released a number of SupportPacs to support the development of applications calling CICS using CICS TG APIs. This post provides a summary of these SupportPacs, including detail on the evolution of the API for .NET Framework-based applications. Click the links to the specific SupportPacs to find further detail and API documentation. CA5F: IBM CICS TG 'gateway' intercept plug-in support... [More]
A number of our users create special perspectives tailored to their company, or workflow, pulling together the critical set of views for their situation. For a single user, it's simple enough to customize the perspective and save it using the Window > Save Perspective As... menu, but it's difficult to share these between users. The correct way to share perspectives between users is by Eclipse's extensibility features. As an example, we're going to create a CICS Web Hosting Perspective that shows the information needed to... [More]
This article shows how the IBM Health Center can be easily installed into the CICS Explorer and used to create customized perspectives for monitoring CICS JVM servers. Together these two tools provide a powerful platform for profiling CICS Java applications, monitoring memory usage and garbage collection, and performing further diagnostic commands . Requirements To follow the setup in this article you will require the following minimum software requirements: CICS TS for z/OS V4.2 or later IBM Java SDK for z/OS V7 .0 for SR6 (or... [More]
The Announcement Letter for the CICS TS V5.2 open beta says that “Lifecycle management of first-class applications, introduced in CICS TS V5.1, now supports multiple installed versions of applications.” What is this new capability, how does it work , and why should you be interested? In CICS TS V5.1 we introduced the application resource with a nice long 64-character name and a proper version. So rather than just borrowing characters from an 8 character CICS resource definition name , it was now... [More]
[7/Oct - article updated to refer to CICS TS V5.2 and some WASDev links updated] CICS TS V5.2 includes the latest WebSphere Application Server Liberty Profile (WLP) V8.5.5 that provides features for the Java API for XML Web Services ( JAX-WS ) and the Java Architecture for XML Binding ( JAXB ). Together these technologies enable you to write SOAP web services in Java as part of a CICS application. You may be thinking, why not use the CICS TS native web services stack as it is fast, efficient and good at mapping... [More]
In my previous article “What is CICS Application Multi-versioning?” I described how the new multi-versioning capability in the CICS TS V5.2 open beta could be used to eliminate name clashes when hosting independently developed applications on the same CICS platform. This allows you to take advantage of the increased operational efficiency and reduce the number of regions required. In this article I will explain how use to the multi-versioning capability to increase service agility. Service agility allows... [More]
Abstract: CICS CMCI connections can only be defined manually in CICS Explorer. This is suitable if you have to create a small number of connections but does not fit if you have to define a large number of connections. This document will show you how to generate Connections.pref from an Open Office spread sheet. This article is based on CICS Explorer 5.1.1 Objective: Generate Connections.pref from Open Office spread sheet (See picture below) How you will reach your objective: By following this guide you will define an XML Filter on OpenOffice.... [More]
IBM Knowledge Center will soon become the central location for online documentation about IBM products, replacing all the separate information centers. You do not need to take any action, links to the existing CICS information centers will be automatically redirected to IBM Knowledge Center from May onwards, but you will notice some changes in the look and function of the CICS online documentation. You can find the IBM Knowledge Center here: www.ibm.com/support/knowledgecenter/. Why are information centers changing? Clients have told IBM... [More]
Many of us have used CICS Explorer to manage CICS. But did you know that you can use the underlying CICS Management Client Interface (CMCI) from your browser (or any other HTTP client)? The CMCI request structure consists of an HTTP header with a method (GET, PUT, POST, DELETE) followed by a URI (Universal Resource Identifier) and an optional XML body containing details of any changes to be made to CICS or CICSPlex SM resources To try out the examples you need to know the hostname (called yourHostName in this article) and the CMCI port (called... [More]
This article describes how to deploy a Java application that uses the IBM MQ classes for Java into a CICS OSGi or Liberty JVM server Requirements To follow the setup in this article you should already have performed the following: S etup CICS to access MQ, this includes adding the correct datasets to the CICS region STEPLIB, and defining the MQCONN resource definition. Installed the CICS Explorer V5.2 and added the WDT tools if developing Web applications. Successfully created and started a JVM server in CICS You will require the... [More]