Solution : https://service.sap.com/sap/support/notes/672652 (SAP Service marketplace login required)
Key words : 
incorrect support package proposals            symptom, component bc-upg-ocs, lang dtel object information, importedlang tabl object information, support package selection screen, downtime-minimized import mode, profile parameter rdisp/bufrefmode, family ibm db2            symptom, avoid ddic activation errors, avoiding ddic activation errors
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