Solution : https://service.sap.com/sap/support/notes/626628 (SAP Service marketplace login required)
Key words : 
source code corrections, symptom change pointers, large temporary segment, permanent tablespace psaptemp, change psaptemp, temporary segments, report rbdmidoc, process ends, released immediately, shadow process
Related Notes : 
       
| 513454 | REP: High-performance operation with change pointers | 
| 420562 | REP: Reducing the scope of data for change pointers | 
| 416772 | General tablespace types, temporary tablespace parameters | 
| 409376 | Use of locally managed tablespaces for SAP R/3 | 
| 214995 | Oracle locally managed tablespaces in the SAP environment |