VSAM Tutorial (for Experienced)


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

The tutorial is for anyone who can be a student, a fresher trying to learn VSAM, or a software engineer, a mainframe developer, an expert trying to improve their expertise on VSAM.

We have created different expertise levels (Beginner and Experienced) at the tutorial level.

If you are a newbie to VSAM, go through the VSAM Tutorial (for Beginners)


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 you learn?

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

For basic information, go through VSAM Tutorial (for Beginners)