Default job scheduling

go to sm36
click on "Standard Background Job"
Define Background Job
Click on Default Scheduling

And schedule the BTC Jobs with Default time

1.RSBTCDEL:Used to delete the background jobs ,Reporting structure 'BTC' 'DEL'
2.RSSNAPDEL:Delete the old ABAP Dumps
3.RSPO1041:Delete the old spool logs and files
4.RSMO13002:Delete the old Update requests/logs
5.RSCOLL00:Collects performance info in t-code ST03
6.RSPO1043:Spool reorganization