Solution : https://service.sap.com/sap/support/notes/874096 (SAP Service marketplace login required)
Key words : 
/tc~slm~slmapp fromthe configuration, upgrade fails forsome reason, /tc~slm~slmapp, ~tc~slm~services, unsufficient disk space, file system remain, upgrade log files, ejb jar files, terms netweaver upgrade, ejb related problem
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