A Diffuser program can be scheduled just like any other background program. Typically this is done using the standard transaction SM36. The program variants can also be saved as per normal.
Diffuser in most cases, however, does require another program to be scheduled for it to operate efficiently in a production environment. The program function is to regenerate the Interval Variant. The purpose of regenerating an Interval Variant is such that as the master or transactional data grows, the intervals can be recalculated to ensure that each interval is evenly spread. This then ensures the Diffuser program is processed as efficiently as possible.
The program /BTR/MDR_INTERVAL_REGENERATION is used for this purpose. This job should typically be scheduled nightly at the beginning of the batch window, and can be executed for individual Interval Objects, individual Interval Variants, or for all Interval Variants by adjusting the parameters on the selection screen.
For the Interval Regeneration to operate, you will need to configure the table /BTR/INTVALVARC. Here you define an Interval Object, Interval Variant and the refresh age. The refresh age defines how frequently the Interval Variant is refreshed. For example if for Object SCUSTOMID, Variant SAMPLE, if the refresh age is 7, the interval variant will only be regenerated every 7 days, even if the regeneration job is scheduled nightly. This functionality allows you to avoid scheduling individual regeneration jobs in different reoccurring cycles. You can override the refresh age functionality by selecting the “Force regeneration” check-box.
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