Access to CICS via a browser

The core business in an enterprise are still the transactions that run day by day to make the businesses happen. The evolution of the last years showed once more the necessity of standard and modern interfaces, for the integration of transactions to distributed transactions across different platforms. Today's most standard interface is the web browser technology. For the core applications running on z/VSE, technology was developed to allow existing programs to interact via browser.

Based on the reliability, feasibility and security of the transactions running with CICS Transaction Server (CICS TS) in z/VSE, IBM developed new functions to enable the integration of existing core transactions into web processes using internet standards and web technologies.

Overview

Image map WebSphere Application Server TCP/IP for z/VSE Host Access Transformation Services Host On-Demand CICS Transaction Server

To have access to z/VSE transactions via browser technologies, a 2-tier solution is available as function within the CICS Transaction Server and 3-tier solutions are available using middleware products.

2-tier solutions:

The CICS Web Support (CWS) allows to access your CICS applications directly with a browser, without a middle tier. CICS Web Support (CWS) is a feature of CICS Transaction Server . It allows to access your CICS applications directly with a browser, without a middle tier. The 3270 to HTML transformation is done on the z/VSE system by CWS based templates.

3-tier solutions:

Products like IBM Host Access Transformation Services (HATS) and IBM Host On-Demand (HOD) allows to access your z/VSE system using Telnet 3270 (TN3270) and web applications. IBM Host Access Transformation Services (HATS) and IBM Host On-Demand (HOD) are servers, that run on a middle tier system. They are responsible for transforming the 3270 screens into HTML pages that can be displayed by a web browser. Access to the z/VSE system is done via Telnet 3270 (TN3270). All you need on z/VSE is either a Telnet Daemon on z/VSE or on VM. The HATS Studio is delivered with HATS and allows development of web based applications which interact in the background with existing z/VSE applications without changes to these applications.

 

 

Benefits

With browser technology - the most standard interface today, existing core z/VSE transactions can

Portal based solutions and distributed processes can be integrated with z/VSE CICS transactions.

 

 

Software prerequisites

The following software requirements must be meet in order to implement this solution:

 

 

How to get started

To enable CICS transactions to be accessed from a browser via CWS, following Steps have to be done:

To get started with IBM Host Access Transformation Services (HATS) and IBM Host On-Demand (HOD), no changes to z/VSE programs are required.

 

 

Additional information

Additional information for this solution scenario can be found:

 

 

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