EXITS provided with z/OS by IBM

January 10, 2017 Rui Miguel Feio

What exactly is an EXIT in z/OS? An EXIT is nothing more than a subroutine invoked by a program that can be customised to implement a predefined event in the execution of that same program. Confused? In that case imagine an EXIT as a way to customise the execution of […]

Protecting TSO resources using RACF

December 20, 2016 Rui Miguel Feio

It is important to ensure that your TSO resources on the mainframe are secured. The following table contains the list of RACF classes and corresponding profiles available to protect TSO resources:   RACF class name Profile name Resource protected TSOPROC procedure name Logon procedure ACCTNUM account number Account number for […]

How to execute TSO commands in Batch Job

July 19, 2016 Rui Miguel Feio

Running TSO commands via batch job can be very useful if you have the need to execute multiple commands or if you want to capture the output of the TSO commands. To execute the TSO commands in batch you can use one of the following Terminal Monitor Programs (TMP): IKJEFT01 […]

What is SYS1.UADS for?

December 4, 2015 Rui Miguel Feio

Have you ever thought what would happen if your External Security Manager (RACF, ACF2, or TSS) becomes unavailable? How will you be able to access your mainframe system? Well, SYS1.UADS is the answer to this question. This dataset contains the list of users that can access the mainframe system should […]