WebSphere WebSphere Enterprise Service Bus, Version 6.0.1 Operating Systems: AIX, HP-UX, Linux, Solaris, Windows

Changing message reliability for a bus destination

Messages have a quality of service attribute that specifies the reliability of message delivery. You can select a reliability to suit your requirements for assured delivery, and system performance.

Why and when to perform this task

The administrator can specify the reliability setting on bus destinations, or the reliability can be specified by individual producers (typically under application control through an API call). The administrator can specify whether the default reliability for the destination can be overridden by a producer, and the maximum reliability that attached producers can request.

To browse or change the message reliability setting of a destination, use the administrative console to complete the following steps:

Steps for this task

  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. Click Destinations
  4. Click the destination name. This displays the details page for the destination.
  5. Review the reliability properties. The following properties control the message reliability for the destination:
    Default reliability
    The reliability assigned to a message produced to this destination when an explicit reliability has not been set by the producer.
    Maximum reliability
    The maximum reliability of messages accepted by this destination.
    These properties can have values from the following list:
    Best effort nonpersistent
    Messages are discarded when a messaging engine stops or fails. Messages may also be discarded if a connection used to send them becomes unavailable and as a result of constrained system resources.
    Express nonpersistent
    Messages are discarded when a messaging engine stops or fails. Messages may also be discarded if a connection used to send them becomes unavailable.
    Reliable nonpersistent
    Messages are discarded when a messaging engine stops or fails.
    Reliable persistent
    Messages may be discarded when a messaging engine fails.
    Assured persistent
    Messages are not discarded.

    For more information about using these properties to control message reliability, see Message reliability levels.

  6. Review whether producers can override the default reliability setting.
    Enable producers to override default reliability
    Select this option to enable producers to override the default reliability that is set on the destination.
  7. Optional: Change the destination properties to suit your needs.

    You can further refine the configuration of a destination by setting other properties to suit your needs, as described in Configuring bus destinations.

  8. Click OK.
  9. Save your changes to the master configuration.

Task topic

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Timestamp iconLast updated: 13 Dec 2005
http://publib.boulder.ibm.com/infocenter/dmndhelp/v6rxmx/index.jsp?topic=/com.ibm.websphere.wesb.doc\tasks\tjo_msgreliability.html

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