Solution : https://service.sap.com/sap/support/notes/563213 (SAP Service marketplace login required)
Key words :
terms bw web application, patch level l5, solution install igs 6, web reporting, upgrade bw 2, igs version, program rszw_webobjects_30_upgrade, termination occurs, error message, executing- rszw_webobjects_30_upgradeuncaught_exception