You can use a Collector policy to control the storage of events for Collector nodes.
Information about the state of in-flight messages is held on storage queues that are controlled by IBM® MQ, so you must install WebSphere MQ on the same computer as your integration server if you want to use the capabilities that are provided by the Collector node. The storage queues that hold the state information are owned by the queue manager that is associated with the integration server.
If the integration server has the necessary permissions to create the default system queues, they are created automatically when a flow that contains Collector nodes is deployed. If the default queues are not created automatically, you can create them manually; see Creating the default system queues on a WebSphere MQ queue manager.
These queues are also used by the Resequence node.
However, you can control the queues that are used by different Collector nodes by creating alternative queues that contain a QueuePrefix variable, and by using a Collector policy to specify the names of those queues for storing events.
Follow these steps to specify the queues that are used to store event states, and to set the expiry for the collection: