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COBOL 400 Course: Master AS/400 in Pune

Master the COBOL 400 Course designed to help you build strong programming skills on the IBM AS/400 (iSeries) platform using COBOL, RPG integration basics, and modern enterprise development practices. This hands-on COBOL 400 Course covers COBOL syntax, file handling, indexed and sequential files, DB2/400 database operations, and batch processing workflows.

Learn how to design and develop reliable business applications using structured COBOL programming on the AS/400 environment. This COBOL 400 Course teaches program logic, subroutines, error handling, job control language (JCL) basics, and production-ready coding techniques used in real enterprise systems.

Through practical projects, you will gain experience building, debugging, testing, and maintaining real-world COBOL applications. Whether you are a fresher, mainframe developer, or IT professional, this COBOL 400 Course helps you develop the skills needed to work confidently on legacy and enterprise-grade systems still used by banks, insurance companies, and government institutions worldwide.

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What will you learn in

  • Overview of IBM i architecture
  • What is COBOL and why it is still used
  • COBOL vs RPG vs CL on IBM i
  • Understanding libraries, objects, and members
  • Source physical files (QCLSRC, QRPGLESRC, QCBLLESRC)
  • Compiling COBOL programs on IBM i (CRTBNDCBL, CRTCBLMOD, CRTPGM)

  • COBOL program structure
  • IDENTIFICATION, ENVIRONMENT, DATA, PROCEDURE divisions
  • COBOL syntax rules
  • Fixed vs free format COBOL
  • Variables, literals, constants
  • MOVE, COMPUTE, ADD, SUBTRACT, MULTIPLY, DIVIDE
  • IF, EVALUATE, PERFORM loops

  • PIC clauses (X, 9, S9, COMP, COMP 3)
  • Packed decimal vs binary vs display
  • Redefines, Renames
  • Arrays (OCCURS)
  • Group items
  • Working storage vs linkage section

  • File types on IBM i
    • Physical files (PF)
    • Logical files (LF)
  • COBOL file control entries
  • SELECT and FD statements
  • OPEN, READ, WRITE, REWRITE, DELETE
  • Sequential vs random access
  • Handling end of file
  • Error handling and status codes

  • Introduction to embedded SQL
  • EXEC SQL syntax
  • Connecting to DB2 tables
  • SELECT, INSERT, UPDATE, DELETE
  • Using host variables
  • SQLCODE and SQLSTATE
  • Cursors (DECLARE, OPEN, FETCH, CLOSE)
  • Error handling with WHENEVER
  • SQL performance basics

  • CALL and CANCEL statements
  • Passing parameters BY REFERENCE / BY CONTENT
  • Linkage section
  • Creating reusable COBOL modules
  • Returning values from subprograms
  • Using COBOL modules inside CL/RPG programs

  • Calling COBOL from CL
  • Passing parameters between CL and COBOL
  • Using COBOL to update files created by CL
  • Using CL for job control and COBOL for business logic

  • Multi format logical files
  • Join logical files
  • Commitment control (STRCMTCTL, COMMIT, ROLLBACK)
  • COBOL with data areas (DTAARA)
  • COBOL with data queues (DTAQ)
  • COBOL with message queues
  • COBOL with IFS files

  • File status codes
  • SQL error handling
  • Declaratives in COBOL
  • Using STRDBG for COBOL
  • Breakpoints, watch variables
  • Job logs and spool files

Frequently Asked Questions

    We have both online & offline training.

    In this course, you will learn COBOL programming fundamentals, file handling (sequential, indexed, relative), DB2/400 database operations, batch processing, program logic, subroutines, error handling, and job control language (JCL) basics on the AS/400 (iSeries) platform.

    Freshers looking to start a career in mainframe development, Software developers, Mainframe programmers, IT professionals maintaining legacy systems, Banking and insurance domain professionals. No prior AS/400 experience is required.

    No prior experience is required. Basic programming logic knowledge will help, but the course starts from fundamentals and builds up to advanced concepts.

    Yes, you will get a course completion certificate when the course is completed.

    Netbanking and UPI.

    COBOL Developer, AS/400 Programmer, Mainframe Developer, RPG/COBOL Programmer, Application Support Engineer, Legacy Systems Analyst.

    Yes. COBOL powers a large percentage of banking, insurance, and government systems worldwide, and there's a consistent demand for developers who can maintain and modernize these systems due to a shrinking pool of experienced COBOL professionals.

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Hands on Project Based Experiences

We emphasize practical, hands-on training in all our programs, ensuring a more effective and engaging learning experience.

Flexible Timing

We started with over 2 trainers and have now grown to more than 100+, with our team continuing to expand. This allows us to offer flexible scheduling options for our learners.

Live interactive online learning

Our platform enables seamless interaction between instructors and learners, creating an immersive and effective online training environment.

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