Solution : https://service.sap.com/sap/support/notes/852365 (SAP Service marketplace login required)
Key words :
symptom inefficient sql statement, prerequisites inefficient sql statement, enter 'reference object id', cost base optimizer, consult sap note 724545, cost based optimizer, missing database index, press ctrl-f32, field short text, start transaction se11
Related Notes :
724545 | Adjusting the CBO statistics manually using DBMS_STATS |