Author Archives: Roger Lacroix

My name is Roger Lacroix and I am a die hard programmer. I have been programming since the 80s. My favorite programming languages are Java, C and Rexx. I have worked in the Airline, Retail but I have spent most of my time doing middleware work in the financial services industry. In 1994, I was introduced to IBM MQ (aka WebSphere MQ & MQSeries) and I thought it was the next best thing since man created fire. This blog will be about IBM MQ, Java, C, Rexx and any other interesting items that I can think of. I hope you enjoy it.

New Raspberry Pi 4 Model B Released

June 25, 2019 Roger Lacroix
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Raspberry Pi Foundation has just released a new Raspberry Pi 4 Model B. https://www.raspberrypi.org/blog/raspberry-pi-4-on-sale-now-from-35/ Everything is bigger, faster & better. Specifications: A 1.5GHz quad-core 64-bit ARM Cortex-A72 CPU (~3× performance) 1GB, 2GB, or 4GB of LPDDR4 SDRAM Full-throughput Gigabit Ethernet Dual-band 802.11ac wireless networking Bluetooth 5.0 Two USB 3.0 and two USB 2.0 ports Dual […]

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Updates to MessageSelector Class

June 25, 2019 Roger Lacroix
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In the blog posting, Java MQ Code to Retrieve Messages from a Queue Based on a Filter, I posted code for a Java MessageSelector class. I have updated the setFilter method to catch any invalid values that may be passed to the MessageSelector class on the setFilter call. You can download the source code for […]

IBM i (OS/400), IBM MQ, Java, Linux, macOS (Mac OS X), Programming, Unix, Windows Comments Off on Updates to MessageSelector Class

Java MQ Code to Retrieve Messages from a Queue Based on a Filter

June 24, 2019 Roger Lacroix
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There is a misconception regarding MQ/JMS message based filtering. Some people think that the IBM MQ queue manager does something special for JMS applications that is not done for plain Java or C/C++/C#/COBOL applications. It is just NOT true. Note: For C/C++/C#/COBOL applications, they can use the SelectionString from MQOD structure to perform message selection. […]

IBM i (OS/400), IBM MQ, Java, Linux, macOS (Mac OS X), Programming, Unix, Windows 5 Comments

IBM MQ Fix Pack 9.0.0.7 Released

June 20, 2019 Roger Lacroix
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IBM has just released Fix Pack 9.0.0.7 for IBM MQ V9.0 LTS https://www.ibm.com/support/docview.wss?uid=ibm10887223 Regards, Roger Lacroix Capitalware Inc.

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RFE – IBM MQ support for AdoptOpenJDK

June 19, 2019 Roger Lacroix
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Please review and vote for this RFE if you think it’s a good idea. The link below will take you directly there. Headline: Add support for AdoptOpenJDK in IBM MQ URL to review the RFE and Vote for it if you like: http://www.ibm.com/developerworks/rfe/execute?use_case=viewRfe&CR_ID=133991 Description: Currently, IBM MQ supports 2 JDKs/JREs: IBM and Oracle. It would […]

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IBM MQ and OpenJDKs

June 19, 2019 Roger Lacroix
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On Monday, Peter Potkay asked a simple question on the MQ List Server: Does IBM support any version of OpenJDK, from any vendor, for use with IBM MQ Clients, specifically the Resource Adapter? Tim McCormick of IBM responded with: The full list of supported JREs are listed in the MQ system requirements here: https://www.ibm.com/support/docview.wss?uid=swg27006467 Specific […]

IBM MQ, Java, Linux, macOS (Mac OS X), Programming, Unix, Windows 1 Comment

Oh Error Messages, Why Can’t You Say What You Mean?

June 11, 2019 Roger Lacroix
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Talk about spending several days chasing my tail. 🙁 I have a customer who build a brand new Windows 2016 Server and install IBM MQ v9.1 then applied Fix Pack 2. So, they were at MQ v9.1.0.2. Next, they installed MQAUSX and applied their generic definitions to it. So far, so good. But when they […]

C, Capitalware, IBM MQ, MQ Authenticate User Security Exit, Windows 3 Comments

Windows: Is the exe or DLL 32-bit or 64-bit?

June 7, 2019 Roger Lacroix
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Every so often, I have a customer send me an email with a IBM MQ message like the following: Channel program ‘TEST.CHL’ ended because user exit ‘C:\Capitalware\MQAUSX\mqausx(SecExit)’ is not valid. Architecture of the exit library does not match the process’s architecture which is ’64’ bit. MQAUSX is just an example, as it could happen with […]

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Java MQ Code to List All Local Queues Filtering by Current Depth

May 30, 2019 Roger Lacroix
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If you have done the following runmqsc command to display all local queues filtering by current queue depth of a queue manager: And you wanted to do the same thing via a program, here is a fully functioning Java MQ example that will connect to a remote queue manager, issue a PCF “Inquire Queue” command […]

Capitalware, HPE NonStop, IBM i (OS/400), IBM MQ, Java, Linux, macOS (Mac OS X), Open Source, PCF, Programming, Unix, Windows Comments Off on Java MQ Code to List All Local Queues Filtering by Current Depth

Excelsior Jet and macOS Mojave

May 29, 2019 Roger Lacroix
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Well, here’s a little oddity that Excelsior Jet users should know about. On Friday, I decided to upgrade my MacBook Pro from High Sierra (v10.13) to Mojave (v10.14). Everything went smoothly. I checked the version level and it said I was running v10.14.2. Note: I have Excelsior Jet 15.3 Professional installed on my MacBook Pro. […]

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