Read and produce messages

At any given time, a single work unit is open to manage the entire set of data. Thus, the integrity of the data is ensured by the MQSeries mechanisms for committing or rolling back a unit of work.

Committing a unit of work:

Group Management Option is ... A work unit is committed ...


When all Input-Events belonging to a group have been transformed with no rejections or anomalies


After processing each Input-Event

Rolling back a work unit:

Group Management Option is ... A work unit is backed out ...


When one Input-Event in the group is rejected

The purpose of backing out at this point is to cancel the products generated by the transformation of other Input-Events in the group


No backout is performed

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