As part of troubleshooting a problem, you might need to find where
message points for a destination are located.
Why and when to perform this task
Perform this task as part of problem determination, when you need
to find out which messaging engine a message point is located on.
Note: If
you have an alias destination, the alias is resolved to the physical destination
immediately after a message is produced. Follow the steps below for the physical
destination.
Steps for this task
Click Service integration -> Buses -> bus_name -> [Additional
Properties] Destinations to display the destinations on the relevant
bus. Review the Type of the destination: - If the destination is a queue, the number of queue points depends on whether
the queue is localized to a single messaging engine, or a cluster of messaging
engines. In either case the name of the queue point or points is of the form destination@messaging_engine_name:
- If the queue is localized to a single, non clustered messaging engine,
there will be a single queue point.
- If the queue is localized to a cluster, there will be one
queue point for every messaging engine in the cluster.
If the queue is mediated it will have one or more mediation points (depending
on whether it is localized to a single messaging engine or a cluster). Messages
produced to a mediated destination will first be delivered to a mediation
point, processed by the mediation or mediations, and unless routed otherwise,
finally be delivered to one of the queue's queue points.
- If the destination is a topic space, it will have a publication point
localized to every messaging engine in the bus. Messages produced to a topic
space are always delivered directly to the publication point situated on the
same messaging engine that the producing application is connected to. A topic
space may be mediated in the same way as a queue, in which case messages will
initially be directed to the one or more mediation points and then to a publication
point colocated with the mediation point.
Continue with the problem determination. If the destination is a
queue with multiple queue points, or it is mediated using multiple mediation
points, perform the problem determination for each message point that the
message could have been sent to or consumed from.