Solution : https://service.sap.com/sap/support/notes/147139 (SAP Service marketplace login required)
Key words : 
building summarization levelsthe standard building requires approximately 50-60 mb main memory, shows sequential reading k8xxxxxthe displayed table, avoid posting large datasets parallel, additional key words summarization level, shows sequential reading k8xxxxxthis, aggregate functions activate / deactivate, data base error ora-1555, shows sequential reading ce1xxxx, permitted main memory requirements, observe heavy disk activities
Related Notes : 
       
| 332677 | Rebuilding fragmented indexes | 
| 192531 | KEDU: DBIF_RSQL_SQL_ERROR change tablespace | 
| 191798 | CO-PA: Termination ORA-01652 in the PSAPTEMP tablespace | 
| 154776 | RKETRERU: Problems with MSSQL 7.00 | 
| 136216 | Fast rollup for summarization levels for costing-based CO-PA | 
| 129850 | Performance when building summarization levels | 
| 88706 | ORA-1555 during 'Fill Summarization Levels w. Data' | 
| 83204 | Usage strategy for summarization levels |