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.

IBM MQ V9.2.3 Announced

July 20, 2021 Roger Lacroix
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IBM has announced IBM MQ V9.2.3: https://www.ibm.com/common/ssi/ShowDoc.wss?docURL=/common/ssi/rep_ca/1/877/ENUSZP21-0231/index.html Highlights: MQ 9.2.3: – Streaming queues to make message data from existing flows available to Apache Kafka streaming applications, artificial intelligence (AI), and analytics applications, with zero impact to the existing applications or their messages and without a need for rearchitecting your message flows – Broadened uniform cluster […]

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Time Warp – AIX and MQ v6

July 12, 2021 Roger Lacroix
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Last week, a customer emailed an interesting request. They have 2 AIX hub servers running WebSphere MQ V6.0 and they want to determine what applications are using the 2 MQ hub servers, so that they can upgrade to a newer release of MQ. That made me clean my glasses because MQ v6 went out of […]

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MQ Request/Reply Scenario with Async Getter Thread

July 8, 2021 Roger Lacroix
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Ok. Continuing on with the previous blog posting here, the StackOverflow user says that s/he wants the getter component to be run in a separate thread. To me, the request does not really make a lot of sense. If the user wants to do a Get with CorrelId then they should be coding for synchronous […]

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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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