RACF

The OWNER of a RACF Resource

It is important to understand what owning a RACF resource really means to avoid security misconfigurations and the introduction of security vulnerabilities in your mainframe environment. In this article, I will try to explain the concept of a RACF resource OWNER, and describe what the OWNER can actually do. Let’s […]

JCL

How to Invoke USS from z/OS Batch Jobs

In order to run Unix System Services (USS) shell commands, scripts and others, from a batch job, you can use the BPXBATCH program provided with z/OS. BPXBATCH can be invoked form a JCL (batch job) or from TSO: JCL: EXEC PGM=BPXBATCH,PARM=’SH program-name’ EXEC PGM=BPXBATCH,PARM=’PGM program-name’ TSO: BPXBATCH SH program-name BPXBATCH […]

Storage

What is a Virtual Tape Library (VTL)?

A Virtual Tape Library (VTL) is a disk (DASD) based backup system that emulates a real tape library system. For the operating system and to those who use the VTL, it’s like working with real tapes, but in reality it’s disk. A Virtual Tape Library has several benefits: Better backup/restore […]