Solution : https://service.sap.com/sap/support/notes/1665188 (SAP Service marketplace login required)
Key words :
executing \usr\sap\<sid>\<java- / dual-stack instance>\j2ee\configtool\configtool, phase log file /usr/sap/<sid>/upg/java/log/jload_ijd, attribute jdbc/pool/<sid>/url, attribute jdbc/pool/<sid>/urlin, attribute jdbc/pool/ja1/url, attribute jdbc/pool/ja1_remote/url, transaction isolation=read uncommitted, stop productive usage immediately, hold input locators=true, corrupt upgrade correction packages
Related Notes :
1258882 | Upgrade to SAP NetWeaver PI 7.1 EHP 1: IBM DB2 for i |
1095885 | Upgrade to SAP NetWeaver 7.1 AS Java: IBM DB2 for i5/OS |