VSAM Tutorial (for Beginners)


This page describes audiences, objectives, prerequisites, and the topics covered as part of the tutorial.


  • Virtual Storage Access Method (VSAM) refers to both type of the dataset and the access methods that are used to manage various dataset types.
  • The access method makes an I/O operation(moving data between an I/O device and memory) easier for an application.
  • VSAM is a type of record-oriented system and an IBM invented access method that allows us to access and organize records in the dataset.

Audiences & Objective

In this tutorial, all the topics are covered with basic information. So, this tutorial is advised for beginner developers.

If you are looking for in-depth information on VSAM tutorial, go through the VSAM Tutorial for Experienced


Reader having the knowledge on below can understand the VSAM topics easily -

If the readers do not have knowledge of the above, we have got covered those tutorials as well for you. Go through them and have some basic understanding before proceeding with VSAM.

Having a mainframe id handy helps to practice the concepts immediately. However, mainframe id is not mandatory to learn the VSAM and we have covered all concepts with full of examples.

What are the topics covered?

We have covered the below topics with basic information that includes examples with detail explanation -

For extensive information, go through the VSAM Tutorial for Experienced