Solution : https://service.sap.com/sap/support/notes/96211 (SAP Service marketplace login required)
Key words :
stack trace shows thatthe system cores, additional key words japanese, symptom transaction sm21, multi-byte-codeset, prerequisites source bug, newest sap kernel, wrong function 'toupper', system coredump, function 'toupper', patch level
Related Notes :
| 106641 | R/3 kernel (disp+work) multibyte core/signal 10 |