Solution : https://service.sap.com/sap/support/notes/1016184 (SAP Service marketplace login required)
Key words : 
ana_new_part_efact            calculate database statistics, >/4e<infocube> shadow table, > /4e<infocube> shadow table, storage parameter reason, 00 solution background attaching, 0calmonth oder 0fiscper, step_crea_idx_eshd            create indexes, upper limited entered, empty shadow table, relevant processing step
Related Notes : 
       
| 1016185 | ORA Repartitioning: Merging partitions | 
| 1008833 | Supplementary SAP Note about repartitioning |