Solution : https://service.sap.com/sap/support/notes/129028 (SAP Service marketplace login required)
Key words : 
additional key words emu, profile parameter rec/client, table dbtabprt rapidly increases, flag 'log data, table dbtabprt, data dictionary, system lock, change documents, tables ewupgstat, controlled automatically
Related Notes : 
       
| 121245 | System settings for local currency changeover to euro |