To have an idea about the background scheduling let us take
an example of a long report. Suppose we execute this report in interactive
mode, it takes several minutes and during time the SAP System is blocked for
any further input. As a result, you will not be able to interact with SAP
However, when you run the report non-interactively, you can
interact with the SAP sessions while processing the report in the background.
For executing jobs in non-interactive mode, schedule the job for background
processing. To create a background processing job you should specify:
The name of the report
The name of any variant it needs
What to do with output
When to start it
After this, the SAP system does not require user’s
intervention and can proceed with the job even without you. It executes the
report and prints the output using printer or output controller. While
scheduling a job in background process, three parameters should be specified.
These parameters are:
Definition of programs
Its start time
The printing specification for getting the prints as required
After this, you can check whether your job was executed
successfully and display a log of any system messages.
For scheduling background processing, you have to direct the
system to process an ABAP/4 or external program in the background. This is a
Scheduling the program
Releasing the job
This needs to have a special authorization for releasing and
scheduling the job. Generally, the system administrator, who organizes and
monitors background processing, supervises the release of these jobs. Many
users are also authorized to schedule background processing of reports. You
cannot schedule a job unless and until you have a release authorization. If a
user is authorized and has specified a start date or selected "start
immediately," he or she can release the job.
Authorized users can change start time. A program can be
scheduled as a separate job or you can append it to an existing job, which has
not yet been processed. Background process can be run while doing some other
online work. However, this can adversely affect online operation and should be
avoided. For example, if you run a program that locks the database, the work of
online users will be hampered or stopped. Often, long-running reports are
scheduled automatically or semi-automatically for background processing.
Initiate the job scheduling function. Standard job
scheduling must be used in case of scheduling of an external command or
external program as a background job and ABAP job scheduling function can be
used to schedule ABAP programs. For starting a standard job scheduling function
choose the following:
Administration menu bar option à CCMS option à
Jobs option à Definition option.
For starting ABAP job scheduling function, navigate to ABAP
Editor and choose Program menu bar option àExecute
option à Background option.
Now define a job. Using the Job Wizard you can define your
job. From the Application toolbar, choose the wizard button. After this, the
initial screen of the SAP Job Wizard appears. The Job Wizard is available only
from the standard job scheduling function.
Now, you have to save the job. When it displays the message "Job
saved" it means the job has been successfully scheduled. We know that a
job must be released before it is scheduled. Only authorized users can release
the job, otherwise your system administrator will release your job.
This is the last step of scheduling. In this step you have
to check the status of your job. For this you need to choose System menu bar
option à Own jobs option.
In SAP System, the background processing runs according to
your instructions. In case a list is generated by the report, the report either
prints directly or waits for you in the SAP output controller. The status of background
processing can be checked for its correctness.