Jim Schesvold
Contributor
Jim Schesvold can be reached at jschesvold@mainframehelp.com.
Application Performance and Tuning
May 14, 2019
As the original author of “CICS Performance Bulletin” published by IBM Dallas System Center, and co-author of the subsequent IBM “CICS TS Performance Guide” in conjunction with IBM Hursley CICS TS Development, performance and tuning has been a big part of my job. I’ve performed more CICS performance studies than I can count, and almost […]
ArticlesLet the End User Be Your Guide
April 1, 2019
Although my career has been primarily in OSes, transaction processing, data management/database and network implementation—along with consulting later on—I’ve also participated in application development projects. In my early years, I and an IBM consulting system engineer designed and developed a field developed program called Trend Analysis for CICS/VS, one of the first graphic analysis tools […]
ArticlesImproved Error Handling Increases Usability
March 1, 2019
Errors can be managed, anticipated, controlled and sometimes resolved if an IT development unit is properly structured.
ArticlesStress Tests Validate Systems and Strain Analysts
January 1, 2019
In conjunction with a client insurance company, I have the dubious distinction and privilege of being an early pioneer in the discipline of stress testing computer systems. Thanks to the wise experience of an IBM Consulting Systems Engineer named Don Lund who took me under his wing and passed his wisdom to me—and mostly kept […]
ArticlesClearly Defining Project Completion
December 1, 2018
My first contract as an independent consultant was with a large, multinational bank. They were attempting a processor-to-processor application that exchanged banking information nightly, and trying to implement a new IBM function called IBM Advanced Program-to-Program Communication (APPC)—something new to them, but not me. I was initially delighted to take the project. I met with […]
ArticlesFlexibility Is Key in Project Estimation
November 1, 2018
So often we hear of projects—especially government funded projects—exceeding their budget, and for a long time my knee-jerk reaction was that hanky-panky was afoot. I’m sure sometimes that’s true, but when consulting became my career and sizing a project became a necessary skill, I realized it wasn’t so clear cut. In most cases, there are […]
ArticlesProject Plans Require Nurturing Leadership
October 1, 2018
I was recently chatting with a colleague who was complaining about project team members ignoring his directions, neglecting a schedule he’d built before a short vacation and consequently getting an email from his unhappy client about project delays. I asked if he’d held a meeting to discuss assignments and appoint someone in charge. When he […]
ArticlesMaking Informed Technological Decisions
September 1, 2018
In my early system engineering years with IBM, my primary account was a large insurance company in central Wisconsin that was a leading-edge user of CICS [1] and one of the higher volume online systems in the world. Their advanced, heavily-used, real-time and transaction-based business applications stressed IBM’s largest S/370 processors to their limits. Transaction growth […]
ArticlesThe Challenge of Making Technical Decisions
August 1, 2018
One of the largest clients I’ve worked with over the years was a paper producer that owned numerous paper mills in Wisconsin that had lost most of their IT staff. It continuously produced several paper types, and if IT operations stopped for more than eight hours, mills would shut down. When a mill shut down, […]
ArticlesWriting Applications Means Knowing the Process and Its Users
July 1, 2018
A few years ago, I helped a client modify and enhance applications in key business processes like marketing, accounting, inventory management, order processing and customer service. I wasn’t an expert in application design or coding; my specialty was system software like CICS, Db2, VSAM and MVS, but I did know the COBOL, PLI and Assembler […]