Solution : https://service.sap.com/sap/support/notes/315101 (SAP Service marketplace login required)
Key words : 
upgrade procedure additional key words update, chronological summary =============================== date topic type, db2udbdb6 production operation 6, prerequisites solution topics, release upgrade, maintenance level, db2commonserver, entry-------------------------------------------
Related Notes : 
       
| 315377 | Additional information about upgrading to 3.1I SR1 |