462 WebSphere Application Server V6.1 Problem Determination IBM Redpaper Collection
Figure 17-9 Select Preferred servers only
17.4.6 Orphan messages on a partitioned destination
In a WLM configuration, with multiple messaging engines in a cluster, a queue
destination becomes partitioned. The number of partitions depends upon the
number of messaging engines because every messaging engine in the cluster
has a queue point. If the destination is a topic space, it has a publication point
localized to every messaging engine in the cluster. For more information about
destination points, see 10.2.4, “Finding queued messages” on page 329.
Partitions cannot communicate with other partitions. A client must be connected
to each cluster member to collect all messages from all partitions.

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