Solution : https://service.sap.com/sap/support/notes/590521 (SAP Service marketplace login required)
Key words : 
<sid>group /usr/sap/<sid>/dvebmgs<inst>/j2ee/clusterchmod 644 /usr/sap/<sid>/dvebmgs<inst>/j2ee/cluster/server/services/dbms/work/, log file /usr/sap/<sid>/dvebmgs<inst>/j2ee/cluster /server/managers/console_logs/ output, properties/usr/sap/< sid>/dvebmgs<inst>/j2ee/cluster/server/managers/settings/r3startupmanager, properties/usr/sap/< sid>/dvebmgs<inst>/j2ee/cluster/server/settings/r3startupmanager, /usr/sap/<sid>/dvebmgs<inst> /j2ee/cluster/dispatcher/managers/settings/r3startupmanager, /usr/sap/<sid>/dvebmgs<inst> /j2ee/cluster/dispatcher/settings/r3startupmanager, qshcd /usr/sap/<sid>/dvebmgs<inst>/j2ee/cluster/dispatchergo, java 5722jv1  option 5      os/400 - java developer kit 1, 5722jv1  option base  os/400 - java developer kit 1, topics                                          date changed======                                          ============1 general information                              jan/20032 errors
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