• Guru: Set Beats A Loop

  August 23, 2021 Ted Holt

  Hey, Ted:

  I’m sending you some RPG source code that I put into one of our inquiry programs and would like to have your insight. Instead of using the SETLL, DOW and READE opcodes to loop through a group of selected records, I used the SQL SET statement. This seems to me much easier for someone else to understand and follow. Is this good practice?

  — Mike

  I was glad to see Mike’s email in my inbox, as always. He and I met in person at the RPG & DB2 Summit a few years ago, and I’ve enjoyed getting to …

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• Calling All IBM i Platforms. . .

  August 16, 2021 Daniel Magid

  In a microservices world, all elements of what used to be monolithic application programs are now chunks of code linked to each other using any number of application programming interfaces, or APIs. Those APIs can be based on a remote procedure call, or RPC, architecture, which is a kind of generic distributed client/server approach, or the REST – short for representational state transfer – architecture favored by parts of the commercial Web software stack that has dramatically grown in popularity in the past two decades. Either way – and in fact, there are more than two ways – APIs are …

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• Guru: Odds and Ends

  August 16, 2021 Ted Holt

  I really appreciate the comments that readers add to the end of articles or send to me in email. The more you share, the more all of us are better off. I know that you don’t have time to go back through articles we have published to see if anyone has commented, so this week I do that for you. Please keep the feedback coming!

  Several people posted responses to Paul Tuohy’s article Getting Meaningful Audit Information from a Journal. You can read them for yourself, but I wanted to thank Emanuele, who mentioned a tool that is similar …

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• Guru: Elapsed Time For Human Beings

  August 2, 2021 Ted Holt

  Quick! Think of a weird animal! Perhaps you thought of the platypus, a duck-billed mammal that lays eggs. Maybe Dr. Doolittle’s pushmi-pullyu jumped to mind. Maybe you thought of a politician or a musician or your next-door neighbor. I know a weird animal that you probably didn’t think of.

  The weird animal I have in mind is called the duration. This animal is found in SQL queries. There are three species: timestamp, date, and time. Today I write about the challenges of interacting with this strange entity. I’ll use the timestamp duration as an example. Interacting with date …

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• One IBM i Shop’s Close Call With Ransomware

  July 28, 2021 Alex Woodie

  Think the ransomware epidemic won’t affect you, that it’s somebody else’s problem? After reading this story about one IBM i shop’s recent experience with cybercriminals, it may have you thinking twice about your approach to security.

  Greg is the IT manager at a midsize distribution company located in the South. IT Jungle is abiding by his request to keep his last name and the name of his company out of this article. But Greg was determined to share his story with the wider IBM i community, in the hopes that it will spur them to take the ransomware threat seriously, …

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• Guru: Getting Meaningful Audit Information from a Journal

  July 26, 2021 Paul Tuohy

  Journaling is an invaluable tool that is used for data recovery, data replication, commitment control and, of course, auditing. But getting at the audit information in an easy-to-use manner can be cumbersome. In this article I want to introduce you to a stored procedure that will create an audit table for any table/physical file and a corresponding view that can be used for easy auditing of changes.

  For example, if I am auditing the EMPLOYEE table (I will be using the EMPLOYEE table in the standard Db2 Sample Database) for a change to the SALARY column, I would use the …

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• Guru: One-Shot Requests and Quoted Column Names

  July 19, 2021 Ted Holt

  If I had a dollar for every time someone has asked me to query data for them over the years, I could have retired already. (I did not say I would have, but that I could have.) It’s nice when the users can retrieve the information they need to do their jobs without help from IT, but when a request is too complex for them, I’m always glad to help.

  I’ve used many tools over the years for one-shot requests for raw data. These days my tool of choice is the Run SQL Scripts tool, which is part of IBM …

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• Altova Updates Db2 for i Support Across Product Line

  July 14, 2021 Alex Woodie

  IBM i shops that use data and development tools from Altova will be happy to know that the software vendor has added support for the latest release of Db2 for i among several of its tools.

  Altova is a Beverley, Massachusetts, company that develops a series of software tools and utilities for developers. The company is arguably best known as the creator of XMLSpy, an IDE that allows developers to create XML-based Web services using standards like WSDL; it later added support for JSON data and the modern SOAP protocol.

  In 2010, Altova added support for IBM i in MissionKit, …

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• In Search Of Next Gen IBM i Apps

  June 28, 2021 Alex Woodie

  What will become of our RPG and COBOL applications? If IBM i chief architect Steve Will has his way, the core elements of them will evolve into what he calls “next gen” applications that can run in the cloud, if necessary.

  “We are not just focusing anymore on trying to help clients get past green screens to mobile interfaces or Web interfaces,” Will said during his recent COMMON NAViGATE session, titled IBM i PLUS Cloud is the Answer. “There are still clients and applications that need to get there. We understand that. But you can’t just stop there now. …

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• Guru: Understanding Database Performance Using The Performance Data Investigator, Part 2

  June 28, 2021 Dawn May

  This is the second in a two-part series on how you can use the Performance Data Investigator (PDI) to investigate performance of Db2 for i. While the SQL Performance Center in Access Client Solutions is more commonly known than PDI, using both tools is a good way to analyze database performance.

  In Part 1, I reviewed the Database content package, focusing on the charts for I/O reads and writes, SQL CPU utilization, and database locks. In this tech tip, I continue by reviewing the charts related to SQL Cursor and Native DB Opens as well as the SQL Performance …

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