Solution : https://service.sap.com/sap/support/notes/1027146 (SAP Service marketplace login required)
Key words : 
current status integrated central dba planning calendar, select 'administration -> migrate db13c configuration', previous central planning calendar, select 'jobs -> central calendar', sap note 1267189 sql server, central planning calendar, prerequisites sap basis release 7, latest kernel patch, return incorrect results, consistent database monitor
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