Mainframes Course


Mainframes Course Overview

Mainframe is extensively used in large corporations which deal with huge amount of data every day. Over 70% of the global Fortune 500 companies use Mainframe to run their business for everything from cloud to mobile to big data and analytics. Now, there are 1.1 million customer transactions per second on Mainframes compared with just 40,000 searches on Google per second. IBM is the leading manufacturer of the Mainframe Systems.

Starting with an overview of the Mainframes, this course will take you through the types of datasets, Operating systems and data processing used on mainframes. With these basics mastered, the course will take you through TSO commands, will introduce you to ISPF commands, allocation of datasets and then the different operations you can perform on the datasets.

It will then cover the basics of JCL, VSAM, COBOL and CICS. Upon completion you will be literate in Mainframe terminology, understand how datasets are created and how you can use commands to operate on the data in these datasets.

Mainframes are a type of computer that generally are known for their large size, amount of storage, processing power and high level of reliability. They are primarily used by large organizations for mission-critical applications requiring high volumes of data processing.

Anyone who wants to start a career in Mainframes but don’t know where to start.  IT professionals looking for a switch in their careers. Mainframe Professionals who want to brush up their knowledge about mainframes.

Must have knowledge on different programming languages with experience.

After completing this course you get hires in IT companies like IBM, Apple, AtoS, Amazon and more.

The main concepts covered in Introduction, Job Control Language (JCL), Customer Information and Control System (CICS), Mainframe DB2, IBM Utilities, Operating system

Mainframes Course Syllabus


  • Features of COBOL
  • COBOL Programming Syntax
  • COBOL Data Structures
  • COBOL Statements
  • File Processing in COBOL
  • COBOL Subroutines
  • Report Generation in COBOL

Job Control Language (JCL)

  • Introduction to JCL
  • Various fields in JCL Statements
  • JOB Statements
  • EXEC Statements
  • DD Statements
  • Job Processing Overview
  • Program Execution

Customer Information and Control System (CICS)

  • CICS Introduction
  • Application Programming
  • Basic Mapping Support
  • Data Access
  • Program, Interval and Task Control Commands
  • Error and Exception Handling
  • Testing and Debugging
  • Storage & Queuing Function

Mainframe DB2

  • Introduction to Database
  • Data Management and DCL
  • DDL & DML
  • Catalog & Utilities
  • Application Programming
  • CICS Interface

IBM Utilities

  • Overview of IBM Utilities
  • Main Types of Dataset Utilities
  • IEFBR14
  • SORT
  • IKJEFT01
  • Virtual Storage Access Method (VSAM)

Operating system

  • Introduction to Mainframe Operating System
  • Input Output Processing
  • Storage Management
  • Job Management
  • Data Management
  • Job Execution – JCL