Solution : https://service.sap.com/sap/support/notes/1011158 (SAP Service marketplace login required)
Key words :
terms buffer unbuffer synchronization se11 se12 rdisp/bufreftime reason, 'rows affected' > 10 'abap/iv processor requests total', 'abap/iv processor requests - total', 'database activity - rows affected', 'abap/iv processor requests, ' / 'abap/iv processor requests, data updates buffer syncronization, call transaction se11, generic key buffer, buffer synchronization
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