Standalone Java JMS Client for WebSphere MQ

Jon picture Jon · Jun 8, 2011 · Viewed 21.2k times · Source

Can I use just WebSphere's jar files with standard JMS to send messages to a WebSphere MQ server, or do I need to download their WebSphere MQ Client?

Answer

T.Rob picture T.Rob · Jun 9, 2011

You can use just the jar files for both JMS and the native Java MQ API but the question is whether you really want to. The full client install includes sample programs in source and object form, utilities, tracing and more. When you open a trouble ticket with IBM they may ask for information that you would use these tools to gather. If you do not have the full install you may not be able to provide the requested diagnostic information. For this reason, IBM supports the full client installation. If you are just trying to learn JMS and writing a toy application this is probably OK. If the application is going into Production and you may want to get support on it someday, install the client.

The WMQ client install is free and available as SupportPac MQC7. It is a good is a to develop on the V7 client since it is compatible with the V6 QMgr. This saves you some testing when V6 goes out of service in September 2012.

Note that the JMS Thin Client referred to in another response is described in the Infocenter as "a Java service integration bus JMS client designed to run as an embeddable client in Java SE applications under the IBM®, Sun and HP Java run-time environments (JREs). The client supports no transaction and local transaction models." As noted there it is an SI Bus client not an MQ client, has limited platform support and lacks even single-phase commit. The actual WMQ client is specific to WebSphere MQ, has broad platform support and provides single-phase commit transactionality.

UPDATE:
As of April 24th 2012, there is no longer a charge for the Extended Transactional Client for any version of WMQ on any platform. I've removed the portion of the answer that explained the previous license terms.