WebSphere WebSphere Application Server Version 6.1.x Feature Pack for Web Services Operating Systems: AIX, HP-UX, i5/OS, Linux, Solaris, Windows, z/OS

Specifying whether strict message order is preserved for a bus destination

Use this task to change the configuration properties of a bus destination to control whether strict message order is preserved.

Before you begin

The changes made in this task affect the configuration of a bus destination. Before you begin this task, make sure that you fully understand the restrictions that apply to ordered destinations. For further details see Strict message ordering for bus destinations.

About this task

Although messages produced by a single producer to a single destination are seen by a consumer to that destination in the same order as they are produced, there are certain topologies and events, such as system failures, that can change the order of messages (see Message ordering). If strict message order is essential, you can configure a destination to preserve the order of the messages in a much more rigorous manner. Configuring a destination in this way, when used in conjunction with restricted topologies, maintains message order in all circumstances (for further information, see Strict message ordering for bus destinations).

To preserve the order of the messages that are delivered to a destination, use the administrative console to complete the following steps:

Procedure

  1. In the navigation pane, click Service integration > Buses.
  2. In the content pane, click the name of the bus on which the destination exists.
  3. In the content pane, under Destination resources, click Destinations
  4. Click the destination name.
  5. Select the Maintain strict message order check box (setting the option to true).
  6. Click OK.
  7. Save your changes to the master configuration.
Results
An ordered destination has priority over several other configuration properties, such as the number of consumers that are allowed to attach to the destination. The system overrides these configuration properties at runtime, and generates a system log warning. For more information about the configuration properties that the system overrides at runtime, and the impact of including an ordered destination in your system, see Strict message ordering for bus destinations.
Related concepts
Strict message ordering for bus destinations

Task topic

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Timestamp icon Last updated: 27 November 2008
http://publib.boulder.ibm.com/infocenter/wasinfo/v6r1/index.jsp?topic=/com.ibm.websphere.pmc.wsfep.multiplatform.doc/tasks/tjo_message_order_.html

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