Solution : https://service.sap.com/sap/support/notes/747108 (SAP Service marketplace login required)
Key words : 
windows /<upg-dir>/exe  unix    /<upg-dir>/binthe upgrade, sql_execute <create index statements wie, sap db version higher, test system upgrade, shadow schema upgrade, sap<sid>shd, sql_execute drop index, file called r3upphas, control  sql_connect sapr3shd, dd04l tablesto optimize
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