SAP Basis

Unit 9: Scheduling Background Tasks ADM100
work processes is always kept free. Jobs of job classes “B” and “C” can
only be started if the defined number of work processes remains free for
possible class “A” jobs.
Figure 104: Reservation for Class “A” Jobs
To set the number of reserved background work processes for class “A”,
you can define an operation mode in transaction RZ04 (maintenance of
operation modes and instances) and maintain the work process allocation
for this operation mode. When doing so, you have the option of reserving
work processes.
If the class “A” workload is small, or bottlenecks rarely occur in
background processing - in other words, at least one background work
processisusuallyfree-thereservationofaworkprocessforclass“A”jobs
probably provides no advantages. In this case, reservation will simply
mean that a work process is seldom used.
We strongly recommend that you do not reserve more than one background
work process for processing class “A” jobs. It is usually sufficient to
reserve one background work process for processing class “A” jobs.
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