Solution : https://service.sap.com/sap/support/notes/751915 (SAP Service marketplace login required)
Key words :
/usr/sap/[sid]/[instance]/j2ee/cluster/server[, sap xi adapter framework, bytes message display tool, 0 adapter framework messaging system, sap netweaver xi 3, j2ee visual administrator, trace file log file, message display tool, analyze runtime errors, individual code segments