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IBM WebSphere Front coverWebSphere MQ PrimerAn Introduction to Messagingand WebSphere MQLearn the basic concepts of messagingDiscover the fundamentals ofWebSphere MQGet started quickly withWebSphere MQMark E. Tayloribm.com/redbooksRedpaper
International Technical Support OrganizationWebSphere MQ Primer: An Introduction to Messagingand WebSphere MQDecember 2012REDP-0021-01
Note: Before using this information and the product it supports, read the information in “Notices” on page v.Second Edition (December 2012)This edition applies to Version 7, Release 1, Modification 0 and Version 7, Release 5, Modification 0 ofWebSphere MQ for Multiplatform (product number 5724-H72) and to Version 7, Release 1, Modification 0 ofWebSphere MQ for z/OS (product number 5655-R36). Copyright International Business Machines Corporation 2012. All rights reserved.Note to U.S. Government Users Restricted Rights -- Use, duplication or disclosure restricted by GSA ADP ScheduleContract with IBM Corp.
ContentsNotices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .vTrademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viPreface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viiThe author of this paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viiNow you can become a published author, too! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viiiComments welcome. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viiiStay connected to IBM Redbooks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viiiChapter 1. Concepts of messaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.1 The business case for message-oriented middleware . . . . . . . . . . . . . . . . . . . . . . . . . .1.2 Application simplification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.3 Example scenarios . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.3.1 Retail kiosks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.3.2 Faster bank payments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.3.3 Airport information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.4 A messaging-based solution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.4.1 Messaging in a service-oriented architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . .123444455Chapter 2. Introduction to WebSphere MQ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72.1 Messaging with WebSphere MQ. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82.1.1 A history of WebSphere MQ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92.2 Core concepts of WebSphere MQ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102.2.1 Asynchronous messaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112.2.2 WebSphere MQ clients . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122.2.3 WebSphere MQ Telemetry clients . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122.2.4 Application programming interfaces (APIs). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132.2.5 Reliability and integrity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142.2.6 WebSphere MQ messaging styles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152.2.7 WebSphere MQ topologies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162.2.8 Availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202.2.9 Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212.2.10 Management and monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212.3 Diverse platforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222.4 Relationships with other products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232.4.1 WebSphere Message Broker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232.4.2 WebSphere Application Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24Chapter 3. Getting started with WebSphere MQ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.1 Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.1.1 Message descriptor (MQMD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.1.2 Message properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.2 WebSphere MQ objects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.2.1 Queue manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.2.2 Queues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.2.3 Topic objects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.2.4 Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.3 Configuring WebSphere MQ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.3.1 Creating a queue manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Copyright IBM Corp. 2012. All rights reserved.2526262728282830313232iii
iv3.3.2 Managing WebSphere MQ objects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.4 Writing applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.4.1 A code fragment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.5 Triggering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.6 Configuring a WebSphere MQ client. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.6.1 How to define a client/server connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.7 Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.8 Configuring communication between queue managers . . . . . . . . . . . . . . . . . . . . . . . .3.8.1 How to define a connection between two systems . . . . . . . . . . . . . . . . . . . . . . . .3.9 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33343739424345464750Related publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .IBM Redbooks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Online resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Help from IBM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51515151WebSphere MQ Primer: An Introduction to Messaging and WebSphere MQ
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MQ to integrate and extend the capabilities of existing and varied infrastructures in the information technology (IT) system of a business. This IBM Redpaper publication provides an introduction to message-oriented middleware
