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Welcome to the CICS Wiki

This wiki is dedicated to act as a living knowledge base for CICS and CICS related products created by IBM. We hope that this website will be seen as a service to the CICS community that help all of us to grow in knowledge. In order for this to be successful it will take more than one or two people to add content. So we want to invite you to join with us and share the knowledge you have acquired about CICS and its related products. If you would like to contribute - please let us know and we will provide a user id to you. Please make sure to also check out our Disclaimer page.

Admin 04:48, 23 January 2009 (CST)



Featured pages

Discover some interesting articles behind these links

  • In this History article we discover the roots of CICS. Created by Bob Yelavich.
  • Help! How do I... solve my problem in CICS?
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  • Need more advance help - get the real Help here.
  • Want to know what articles others are reading? Popular pages
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  • What is new? See the changes others are making here. Recent changes


COBOL CALL vs. CICS LINK

Which is best? The great debate has started. See which method of program-to-program communication is best.

Read more: CALL_vs._LINK



News

One of the first changes for 2009 I decided to introduce - is Google Adsense. Whilst I hoped to keep the site commercial free - I recognize that it costs time and money to keep it going. Hence my decision to introduce some form of advertisement. I will strive to keep the commercial aspect as unobtrusive as possible.

Admin 04:58, 23 January 2009 (CST)

Well it has been a while since I actively maintained the Wiki. I will attempt to add some new material in this year. It can be so much better if we all do this together. Go ahead you can write an article - share your experience!

The remainder of this news blog can be found in Wiki history


How do I do session management in CICS?

Introduction

Performing Session management in CICS means to keep track of the users that have signed onto CICS from a web client. This is also refered to as "Managing state across an HTTP request sequence" .

CICS provides two very useful programs called DFH$WBST and DFH$WBSR. These programs are designed to assist you to manage state across multiple HTTP interactions from a web client.

The web universe

But before we deal with these programs we first have to discover the laws that govern our web universe. Traditionally terminal users use to sign on to CICS and have a permanent session that was established with CICS. The user's terminal could be displayed by a CICS operator because CICS had a permanent session with the terminal using VTAM. This allowed CICS to anchor some control blocks in which was recorded which user was represented at that terminal. Although we had pseudo-conversational programs the physical network connection was still what we call stateful in that we were always connected with CICS.


Read the whole article here: More...


How do I interact with a transaction from a batch program?

Interact with a CICS transaction from Batch

As always there are several ways to this. I just try to share what I know so far but it's not limited, perhaps there are other mehods too which I just forget. The order of methods doesn't reflect the best way it's just the order I know and have used in the past


EXCI

Since several versions CICS provide the so called EXCI feature and this can be used to invoke commarea based programs from a Batch environment. Starting with RRMS you can also run this CICS-program as part of your "unit of work [LUW]]". However this requires some changes in your batch application. See EXCI-Samples for more details

Read the whole article here: More...


How do I allocate a file dynamically using COBOL?

In early days of Cobol you have to code an assembler program to do this. Since Cobol for OS/390 R2 you can do this without such a program.

Code Sample 

| Local-Storage section.
| 01 rc Pic S9(9) binary.
| 01 rc-display pic 9(9).
| 01 p usage is pointer.

Read the whole article here: More...


How do I spin off JES output in MSGUSR?

Excessive growth in MSGUSR can be controlled by spinning the log off to JES . This can be done using the following methods:

Allocate multiple MSGUSR DD statements

//MSGUSR DD SYSOUT=*,FREE=CLOSE,SPIN=UNALLOC
//MSGUSR DD SYSOUT=*,FREE=CLOSE,SPIN=UNALLOC
//MSGUSR DD SYSOUT=*,FREE=CLOSE,SPIN=UNALLOC
//MSGUSR DD SYSOUT=*,FREE=CLOSE,SPIN=UNALLOC

Read the whole article here: More...


URIMAPs and relative links

Introduction

I recently realized that many people are uncertain how relative links work in web pages and more specifically how to use these in CICS. This article will attempt to demonstrate how relative links work.

I will also show how to use multiple PDS datasets within a CICS region for those of us that are not using HFS to store web pages yet.

Finally, this example will demonstrate the flexibility of the URIMAP definition that is

available since CICS TS3.1.


Read the whole article here: More...

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