Solution : https://service.sap.com/sap/support/notes/578293 (SAP Service marketplace login required)
Key words : 
terms rscpinst tcpdb reason, solution execute rscpinst, prerequisites tcpdb, empty tcpdb, symptom se92, function scp_languages_in_instance, -unicode-system, installation error, syslog entries, unimportant follow-
Related Notes : 
       
| 73606 | Supported Languages and Code Pages | 
| 42305 | RSCPINST (I18N configuration tool) | 
| 15023 | Initializing table TCPDB (RSCP0004) (EBCDIC) |