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Recent Posts
- IBM has announced IBM MQ 10.0
- IBM MQ 9.4.5 Announced
- IBM Champion Renewal Declined
- Capitalware Products & Older Versions of the Products
- Merry Christmas and Happy New Year
- MQ Visual Edit V3.3.0 Released
- MQ Visual Browse V3.3.0 Released
- MQ Batch Toolkit v3.2.3 Released
- MQTT Message Editing Suite V1.2.0 Released
- New: Universal File Mover v2.0.1
- Java/MQ GUI Program to Monitor a Queue
- Inflation and Tariffs
Blog Calendar
April 2026 M T W T F S S 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Archives
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IBM MQ- Terms of Use
- XMS .NET – An Overview April 22, 2026
- IBM MQ Replicated Data Queue Manager Kernel Modules April 21, 2026
- IBM MQ_9.3.x April 21, 2026
- IBM MQ_9.3.x April 16, 2026
- IBM MQ Replicated Data Queue Manager Kernel Modules April 13, 2026
- IBM MQ Replicated Data Queue Manager Kernel Modules March 31, 2026
- PH67964: MESSAGE CSQX068I IS ISSUED ON A REGULAR BASIS AFTER MIGRATING TO IBM MQ FOR Z/OS 9.4.0 March 27, 2026
- PH67639: CSQX199E UNRECOGNIZED MESSAGE CODE 00000272 WITH FFST GENERATED CSQX053E AGAINST XCSREQUESTSPINMUTEXSEM March 27, 2026
- PH69438: INCORRECT OUTPUT RETURNED IN RECORD TYPE 115 SUBTYPE 231 FIELD QCTLSDU March 26, 2026
WebSphere MQ- Terms of Use
- IBM MQ MP1B supportpac - Interpreting accounting and statistics data, and other utilities March 17, 2026
- Long Term Support release: 9.3.0.37 client install image for IBM MQ on IBM i February 26, 2026
- Long Term Support release: 9.3.0.37 client install image for IBM MQ on AIX 64-bit, pSeries February 26, 2026
- Long Term Support release: 9.3.0.37 client install image for IBM MQ on Linux PPC64LE February 26, 2026
IBM Developer Messaging Blog
T.Rob’s Store and Forward- MQ Safety Tips for the Pandemic April 5, 2020
- Command Server Gotcha May 14, 2018
- Client-based runmqsc gotcha May 3, 2018
- When deprecated != deprecated January 19, 2018
- Parsing MQ error logs in Splunk December 19, 2017
Mark Taylor’s Blog- OTel Context Propagation: part 5 – Notes on the MQ Tracing Exit March 4, 2026
- OTel Context Propagation for MQ Applications: part 4 – Python February 6, 2026
- End of a platform January 8, 2026
- MQ Monitoring: using queue manager STATISTICS events December 22, 2025
- MQ with Spring Boot 4 July 29, 2025
Lyns Random Thoughts
Leif Davidsen’s Blog- Designing for Resilience and Cost: Making smart licensing choices that keep your CP4I deployments both reliable and affordable April 17, 2026
- Container licensing deep dive: Making the most of your IBM Cloud Pak for Integration entitlements April 2, 2026
- Doing More for Less: How Cloud Pak for Integration Licensing gives you Integration Superpowers March 17, 2026
- Transform your business productivity with AI Agents for IBM Cloud Pak for Integration. GA on March 25th, 2026 February 19, 2026
- Elevate control of your business through Unified Management and make integrations more accessible and secure with US Federal Compliance : Announcing IBM Cloud Pak for Integration 16.1.3 December 9, 2025
Colin Paice on MQ- First steps in using system ssl April 21, 2026
- First steps in using system ssl: compiling a program April 21, 2026
- Example of system ssl to display keyring information April 21, 2026
- Example of using system ssl to print certificate information April 21, 2026
- Example of using system ssl to sign some data April 21, 2026
- An easy question: how do you print a long long nicely as hex? April 17, 2026
- Why is the size of my enum larger than yours? April 16, 2026
- How do I know it is you sending me secret information? April 16, 2026
- Various TLS return codes April 12, 2026
- How do you download and use a dataset from z/OS. April 12, 2026
StackOverflow MQ Questions- MQCONNX ended with reason code 2393 when connecting mTLS enabled queue April 9, 2026
- how to rectify javax.jms.JMSException: Failed to create connection? January 16, 2026
- IBM MQ 2059 (MQRC_Q_MGR_NOT_AVAILABLE) error in .NET 9.0 console app using IBMMQClient with certificate-based SSL setup January 14, 2026
- Azure linux function app to IBM MQ using IBMMQDotnetClient 9.4.2 December 6, 2025
- App need to perform enable/disable queue programmatically December 4, 2025
- Date & time not being shown in japanese October 28, 2025
- How do I / example of adding source info in IBM MQ Header (possible MQRFH2/usr) from DB2 stored procedure October 14, 2025
- Is Q Replication what's called Fast Queue in database async replication October 6, 2025
- Camel JMS component does not cache the connection September 19, 2025
- How to connect .NET application to IBM MQ using Server Side SSL/TLS authentication with username and password (X.509 certificate-based auth)? July 27, 2025
StackOverflow MQTT Questions- MQTT connection silently drops on NTP clock jump in embedded Linux (no error, no reconnect) April 9, 2026
- How to create "restricted wildcard subscriptions" March 26, 2026
- (Ab)using ASP.NET Core for non-http message processing? February 12, 2026
- Am I misusing Azure Event Grid’s MQTT multi‑session support by connecting 100 MQTT clients to a single defined MQTT client in Event Grid? February 4, 2026
- android compose mqtt implementation January 26, 2026
- Don't get publish() to work in paho.mqtt.client.on_connect thread January 18, 2026
- Best way to host multiple EMQX instances per server January 15, 2026
- How can I connect to AWS IoT Core MQTT over WebSocket from browser January 9, 2026
- paho Android MQTT client does not send PINGREQ to broker when phone screen is off December 2, 2025
- Prevent multiple subscriptions of same topic in HiveMQ MQTT client November 17, 2025
Archive for the Category: C#
MQ Internals Explained (a little bit)
IBM likes to market IBM MQ (aka WebSphere MQ, MQSeries) as a simple and complete solution for business’s messaging needs. Going with the KISS approach is wise (very wise in some cases). IBM talks about the 2 different messaging models that IBM MQ supports: Point-to-Point (P2P) and Publish/Subscribe (Pub/Sub). IBM will: show you how to […]
Also posted in .NET, Assembler, C, C++, HPE NonStop, IBM i (OS/400), IBM MQ, Java, JMS, Linux, macOS (Mac OS X), MQ Auditor, MQ Message Encryption, Programming, Unix, Windows, z/OS 2 Comments
.NET Performance Issues for MQ Get API Calls
If you have read any of the following blog posting then you will know that I have a bee in my bonnet about the performance regarding Java/JMS MQGet API calls: Tuning JMS Programs for Optimum MQ Get API Calls Performance Tuning Java Programs for Optimum MQ Get API Calls Performance How to Improve Your Java/JMS […]
Also posted in .NET, IBM MQ, Programming, Windows Comments Off on .NET Performance Issues for MQ Get API Calls
C# .NET MQ Code to Subscribe to a Topic
The other day I answered a question on StackOverflow about subscribing to a topic using C# .NET code. I figured I should also post the code here for everyone to read & use. You can download the source code from here. Regards, Roger Lacroix Capitalware Inc.
Also posted in .NET, IBM MQ, Linux, Open Source, Programming, Windows Comments Off on C# .NET MQ Code to Subscribe to a Topic
Security Risk for MQ Model Queue
Well, I learnt something new today: an MQ model queue is a security risk! It is not that a model queue in of itself is a security risk but rather what you can do with a model queue to get a backdoor to a queue or maybe it is called a ‘side channel attack’ of […]
Also posted in .NET, C, C++, HPE NonStop, IBM i (OS/400), IBM MQ, IBM MQ Appliance, Java, JMS, Linux, Programming, Security, Unix, Windows, z/OS 1 Comment
C# .NET Code to Get a Message from a Remote Queue Manager
In my previous posting here, I did a write up of putting a message to a queue in a remote queue manager using C# .NET. In this blog posting, I’ll show you how to get a message from a queue of a remote queue manager using C# .NET. If you are familiar with IBM MQ […]
Also posted in .NET, IBM MQ, IBM MQ Appliance, Open Source, Programming, Windows Comments Off on C# .NET Code to Get a Message from a Remote Queue Manager
C# .NET Code to Put a Message to a Remote Queue Manager
I write a lot of C & Java code and I like to publish working examples of C and Java using MQ. So, I thought I should throw a little love towards C# .NET. 🙂 If you are familiar with IBM MQ Classes for Java then writing code with IBM MQ Classes for .NET will […]
Also posted in .NET, IBM MQ, IBM MQ Appliance, Programming, Windows Comments Off on C# .NET Code to Put a Message to a Remote Queue Manager
Microsoft releases Visual Studio 2017
Microsoft has just released Visual Studio 2017. https://www.visualstudio.com Do I need to say any more? If you are a developer then I think you know what Visual Studio is. 🙂 Regards, Roger Lacroix Capitalware Inc.
Also posted in .NET, C, C++, macOS (Mac OS X), Programming, Windows Comments Off on Microsoft releases Visual Studio 2017
Redistributable Clients Starting with MQ 8.0.0.4
With the release of FixPack 8.0.0.4 for IBM MQ, IBM has provided Redistributable Clients for: Native MQ applications using the MQI written in C, C++, COBOL MQ applications using the Java/JMS classes MQ applications using managed or unmanaged .NET classes There is a write up of the new Redistributable Clients at DeveloperWorks. Regards, Roger Lacroix […]
How to Become a Better Developer?
I just read a really good article by Cay Horstmann called ‘How to Become a Better Java Developer’ at InformIT: http://www.informit.com/articles/article.aspx?p=2343471 All novice developers, regardless of the programming language they are learning, should read the article (I strongly suggest it). It has a lot of really good pointers for novice developers. Cay Horstmann has written […]