Among
many other background jobs running in SAP BW system is the RSBKCHECKBUFFER job.
This job runs a ABAP program RSBKCHECKBUFFER that cleans up the DTP Runtime Buffer. What is
meant by the DTP Runtime Buffer is a temporary storage
of the Data Transfer Process. Basically there are settings for the DTP (like
'Fill Temporary Storage After Following Substep' -> see details here).
If those settings are maintained, they represent a retention time for how long
the temporary storage should be kept in the BW system.
Now
there is a function in the BW system needed that makes sure that those
retention periods are fulfilled. The function is represented by the RSBKCHECKBUFFER
job. The job has to be periodically planned.
If it is running, it deletes the entries, once the retention time is reached. Similarly,
the job handles also the DTPs in the case if the settings of the active version
of the DTP do not contain any retention time. Usually it is enough to schedule
the clean up job to run every day.
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