Solution : https://service.sap.com/sap/support/notes/1471717 (SAP Service marketplace login required)
Key words : 
'/db2/<dbsid>/sapadata1/node<nnnn>/temp<pagesize>/ psaptemp<pagesize>, database partition group ibmtempgroup  pagesize <pagesize>  managed, >/node<nnnn>/temp<pagesize>/ psaptemp<pagesize>, '/db2/<dbsid>/sapadata<, create system temporary tablespace <, high system workload, extentsize 2 prefetchsize <prefetchsize>, temporary tablespace consists, dummy temporary tablespace, dummy temporary tablespace>
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