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.

Put 2 Messages with Unique CorrelId and Get 1 Message by CorrelId

July 2, 2021 Roger Lacroix
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On StackOverflow, someone asked a question about putting 2 messages on a queue with unique correlation ids and then retrieve a message with a particular correlation id. Here is a fully functioning Java/MQ program that will put 2 messages on a queue with unique correlation ids and then retrieve a message with a particular correlation […]

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Enhancement to MQ Auditor

June 28, 2021 Roger Lacroix
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Capitalware has an MQ solution called MQ Auditor. MQ Auditor is a solution that allows a company to audit/track all MQ API calls performed by MQ applications that are connected to a queue manager. I have enhanced MQ Auditor with a new keyword called ExcludePCFMessages. It has a default value of ‘N’. When it is […]

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Capitalware Product Advisory – MQ Auditor

June 25, 2021 Roger Lacroix
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A bug was discovered in Capitalware’s MQ Auditor related to PCF response message for the PCF MQCMD_INQUIRE_Q_NAMES command. The PCF response message to the MQCMD_INQUIRE_Q_NAMES command has 2 parts: list of queues and list of queue types. To format the queue types (i.e. local, alias, etc.), the code used a 1024 byte static array. The […]

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IBM MQ Knowledge Center Icons

June 4, 2021 Roger Lacroix
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IBM keeps added more and more icons in the MQ Knowledge Center to highlight which platforms and/or versions that a particular feature is supported on. You can find a complete list and explanation of the icons on the following MQ Knowledge Center page: https://www.ibm.com/docs/en/ibm-mq/latest?topic=mq-release-platform-icons-in-product-documentation Regards, Roger Lacroix Capitalware Inc.

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IBM MQ Fix Pack 9.1.0.8 Released

June 3, 2021 Roger Lacroix
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IBM has just released Fix Pack 9.1.0.8 for IBM MQ V9.1 LTS: https://www.ibm.com/support/pages/downloading-ibm-mq-9108 Regards, Roger Lacroix Capitalware Inc.

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Microsoft OpenJDK Builds

May 26, 2021 Roger Lacroix
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I had to rub my eyes and read the announcement twice!! 🙂 Microsoft announces the general availability of Microsoft Build of OpenJDK: https://devblogs.microsoft.com/java/announcing-general-availability-of-microsoft-build-of-openjdk/ Java at Microsoft spans from Azure to Minecraft, across SQL Server to Visual Studio Code, LinkedIn and beyond! We use more Java than one can imagine. The Microsoft Build of OpenJDK is […]

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Java MQ Code to Clear a Queue of Messages

May 20, 2021 Roger Lacroix
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If you have done the following runmqsc command to clear a queue: 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 “Clear Queue” command, get the PCF response messages and output if the PCF […]

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Updates to My ByteArray Class

May 19, 2021 Roger Lacroix
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Last year, I posted a blog item called Java’s Missing Byte Array Class regarding the missing ByteArray class in Java and I published my ByteArray class for all to use. I have fixed a bug in the getBytes method and added 2 new methods: public int convertToInt_BE() public void replaceAndResize(byte[] oldByteArray, byte[] newByteArray) I have […]

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Ubuntu 21.04 Released

April 22, 2021 Roger Lacroix
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Canonical has just released Ubuntu v21.04. http://releases.ubuntu.com/21.04/ Super-fast, easy to use and free, the Ubuntu operating system powers millions of desktops, netbooks and servers around the world. Ubuntu does everything you need it to. It’ll work with your existing PC files, printers, cameras and MP3 players. And it comes with thousands of free apps. Regards, […]

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Programmatically Get IBM MQ Version for Both Client and Queue Manager

April 21, 2021 Roger Lacroix
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Recently, on both StackOverflow and mqseries.net, people have been asking about getting both the client and queue manager versions numbers for MQ. It is pretty easy to get both the client and queue manager from the command line. For the IBM MQ installation that is running the queue manager, you simply issue the following command: […]

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