Solution : https://service.sap.com/sap/support/notes/75158 (SAP Service marketplace login required)
Key words :
transaction st04 -> 'detailed analysis menu' -> deadlock -> 'single statistics ', transaction st04 -> 'detailed analysis menu' -> deadlock -> 'count statistics', update msscntdead set counter = <retention period>, background job sap_collector_for_perfmonitor - report rscoll00, deadlock entries'<retention period>, symptom detailed statistics, display detailed information, individual deadlock statistics, desired retention period, sap kernel writes
Related Notes :
| 111291 | FAQ: SQL server analysis and avoiding deadlocks |