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IBM Z, z/OS, RACF, ISPF, JCL, SDSF, SMP/E, and everything sysprog. Tutorials, tips, tricks and troubleshooting.
8 postsGeneral computing, tech history, programming, women in STEM, and everything else in the wide world of technology.
coming soonSelf-studying maths. Algebra, geometry, trigonometry, calculus, and everything in between. Starting from a 10th grade level.
1 postAn introduction to quadratic equations — what standard form is, how to identify coefficients, and how to expand, factorise, and solve quadratics with worked examples throughout.
Did you know you can edit which fields are displayed in SDSF, their width, and the order they're displayed in by default? Learn how to find your group, locate the ISFPRMxx member, and define custom field layouts.
It turns out SYS1.NUCLEUS can't have extents — something this baby mainframer learned the hard way. No production mainframes were hurt (much) in the making of this blog post.
A complete guide to creating RACF user IDs — from the minimum ADDUSER command through to TSO and OMVS segments, catalog aliases, dataset protection, and ZFS creation.
A handy REXX ISPF edit macro that inserts a formatted job card template at your cursor position. Includes usage instructions and the full macro source.
JCL is a staple for Systems Programmers, and the job card is the most important part. A guide to positional and keyword parameters — CLASS, MSGCLASS, MSGLEVEL, NOTIFY, REGION, and TIME.
