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Target Audience

The course is aimed at Mainframe developers and trainees who have know how of COBOL, JCL and DB2 and now want to add CICS into their armory. The course contains many practical exercises to ensure familiarity with the CICS development process.

Pre-requisites

The developer should be familiar with the host environment, namely TSO/ISPF, COBOL, JCL and DB.

Course Objectives

Whilst covering the basics of CICS, this course aims to giving the developers a know how of how to develop CICS programs, how to debug them and how to crack interviews.  On completion of this course the student will be able to:

•     Write a CICS program from scratch
  
•     Understand how to define and develop MAPS
•     Debug CICS programs
•     Provide production support for CICS environment
•     Read and comprehendlegacy code

Course Environment

Development will be performed using:

•     IBM Mainframe
•     CICS Environment

Course Details

APPLICATION PROGRAMMING OVERVIEW

Review of CICS basics

CICS as an online system

Facilities and Features

On-Line versus Batch Processing

Multi-Tasking

Dynamic Storage Allocation

The CICS transaction concept

CICS STRUCTURE AND COMPONENTS

System Programs

System Tables

Application Programs

Mapsets

CICS FACILITIES AND FUNCTIONS

Terminal Control

Program Control

File Control

Basic Mapping Support

Temporary Storage

Transient Data

Interval Control

Journal Control

Task Control

Storage Control

Debugging Aids

DESIGNING APPLICATIONS

Two-tier architecture

CICS tasks and services

EXEC INTERFACE BLOCK Concept and Usage 

Using a COMMAREA 

Pseudo conversational design 

COMMANDS OVERVIEW

Command syntax 

SIGNON and SIGNOFF

Program preparation

Coding 

Supported Languages

Translator

Basic CICS commands 

SEND and RECEIVE 

Exception handling

HANDLE CONDITION

IGNORE CONDITION

NOHANDLE and RESP commands

DEBUGGING APPLICATIONS

Scroll CEDF displays 

Overtype argument values and response codes on CEDF displays 

Display the task's working storage 

Display the storage at any address 

Display the EXEC Interface Block 

Display previously traced commands

Continue CEDF with pseudo conversational transactions 

Request a task ABEND from CEDF 

Code user trace entry points 

Invoke CEDF in two-terminal mode

Using CECI

MAPPING SUPPORT

Map preparation and  usage 

How to create a BMS Mapset

Physical and Symbolic Map

How to design user-friendly screens

How attributes control the look and operation of a field

How to code BMS macros

The BMS mapset and symbolic map for the customer maintenance program

How to assemble a BMS mapset

Addressing map data areas 

SEND and RECEIVE MAP commands

Extended attributes 

Cursor positioning 

Dynamic Attribute Character Assignments

Start

Retrieve

Cancel

Suspend

PROGRAM-PROGRAM CONTROL

LINK with COMMAREA 

XCTL with COMMAREA 

The COBOL CALL 

STARTing a new transaction 

Pseudo Conversational Techniques

DATA ACCESS

Data declarations to reference records and rows 

Accessing VSAM Files  ESDS , KSDS etc.

Reading single records and rows 

Reading sets of records and rows

Adding, deleting, and modifying records and rows 

Integrity considerations

CICS Queues

CICS transient data queues 

Intra and Extra Partition Data Sets

Features of TDQ

Automatic Task Initiation

CICS temporary storage queues

CICS with DB2 

How to access DB2 from CICS region

Course Format

Practical sessions make up a large part of the course, allowing delegates to demonstrate and reinforce the lectures given. During these sessions the delegate will gain experience of writing CICS programs. Examples are used extensively, ranging from simple code snippets to full applications with complete ‘real world’ functionality. These are supplied at the start of the course and it is encouraged that the delegates execute and ‘experiment’ with these under the instructor’s guidance as they are introduced. These examples are available to take away, along with the delegate’s own work. The comprehensive Student Guide to crack the interviews supplied at the end of the course. Delegates will also be able to access a free help-line with technical questions relating to topics covered on the course.