116 Highly Available WebSphere Business Integration Solutions
Test #3
While the events are running, kill the Message Broker.
Result
The WebSphere InterChange Server and Message Broker adapters are
unaffected by the unavailability of the Message Broker queue manager, and will
continue to process business processes.
When the broker picks up a message for processing it does not commit the get
from the MQ queue until the output has been placed onto a queue. As a result, if
there are any messages being processed when the broker goes down, the get on
them is released and the message is reprocessed when the broker is running
again. As in the above, there are the same database issues regarding
committing messages.
Test #4
Message Broker resource group ...