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SAP Basis

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Unit 9: Scheduling Background Tasks ADM100<br />

Dialog work processes should be able to respond to end users’ requests<br />

quickly. Dialog resources should therefore not be burdened with<br />

long-running programs. This can lead to bottlenecks in the dialog response<br />

time. The system profile parameter rdisp/max_wprun_time exists for this<br />

reason. It limits the maximum runtime of a dialog step within a dialog<br />

work process. This should ensure that dialog work processes are not<br />

blocked by long-running programs, interfering with online operation.<br />

After the maximum runtime has elapsed, the program is terminated.<br />

Figure 92: Why Background Processing?<br />

You can use the background work processes for long-running tasks. These<br />

are sometimes also called “batch work processes”.<br />

Normally, background processing is used not only for long-running, but<br />

also for recurrent tasks. Examples of this type of task are the daily database<br />

backup or the month end work for financial accounting.<br />

300 © 2003 <strong>SAP</strong> AG. All rights reserved. 2003/Q3

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