Cheryl Watson’s Tuning Letter
A Planet Mainframe Brand
2026 Tuning Letters
No. 1 (93 pages)
Welcome to the latest edition of the Cheryl Watson's Tuning Letter
SHARE Orlando Recap
General Musings
Squeezing Even More Throughput Out of CICS
Threadsafe
Squeezing more work out of CICS
Spreading the word
A Coffee Date with Db2
Db2 trace records
Classes
Instrumentation Facility Component IDs
Back To The Future: From The Archives | Top 10 Findings from z/OS Security Assessments - Part 2
A decade of z/OS Security Assessments
Remediation for Vertali’s Top 13 Security Assessment Findings of the 2020’s
Closing
References
TADz for the Systems Programmer
Introduction
IBM Tivoli Asset Discovery for z/OS
The background
So what happened next?
Product Use Trend Job Names
Discover Product Detail
To conclude
IPL What the heck is that???
Bootstrap Module
IRIMs Tasks
System Component Address Spaces
Types of IPLs
The LOADxx Member
LOAD Parm Processing
IPLTEXT Processing
Summary
Security hints and tips—Operational security is a behaviour, not a product
Understanding before controls
Treating change as a risk multiplier
Security as a collaboration problem
Clarity as a security control
Learning out loud
Let me be Frank
Preserving z/OS excellence through simplification
Why do we need to simplify?
Won’t simplification hide what’s really happening?
Does this mean you are getting rid of JCL?
Are we just making z/OS like other systems?
Let’s build this together
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