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SAP Basis

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ADM100 Lesson: Fundamentals of Background Processing<br />

program requires input. The values stored in the variant are then<br />

used during the execution of the program. If an ABAP program has<br />

a screen output as its result, this is directed to a spool list. You can<br />

specify an (e-mail) recipient for this spool list during the definition of<br />

the job. This recipient then receives the output of the job by e-mail<br />

after the job has been run. You must also specify a printer for the<br />

creation of a spool list, although there is not necessarily any direct<br />

output to a printer as a result of background processing (this depends<br />

ontheprinter’saccessmethod).Thismayhavetobeexplicitlystarted<br />

later.<br />

• An external command is a call of a predefined script, a command,<br />

or a program outside the <strong>SAP</strong> system. With external commands,<br />

you can “mask” operating system calls and store them in the <strong>SAP</strong><br />

system under a name. The execution of an external command can be<br />

protected using the <strong>SAP</strong> authorization concept, so that certain external<br />

commands can only be accessed by particular users in the system.<br />

• An external program is any operating system command. The <strong>SAP</strong><br />

authorization concept only specifies whether a user can call external<br />

programs or not. A more detailed authorization assignment, for<br />

example at the level of program names, is not provided; use external<br />

commands for this.<br />

Figure 95: Start Criteria for a Background Job<br />

A job can be triggered:<br />

• By scheduling it on a particular date at a particular time (this includes<br />

the start time “immediately”, if there are no free background work<br />

processes available when the job is scheduled).<br />

2003/Q3 © 2003 <strong>SAP</strong> AG. All rights reserved. 303

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