Installation error SAP BW 7.0 inc. EHP2
When installting SAP BW 7.0 inc EHP2 I get the following error "An error occurred while processsing option SAP Netweaver 7.0 Including Enhancement Package 2 > SAP Application Server ABAP > Oracle > Central System > Central Systm( Last error reported by the step :Process call "C:\usr\sap\GBW\SYS\exe\uc\NTAMD64\R3load.exe -testconnnect" exits with error code -1073740791. For details log file(s) R3load.exe.log).
Can anyone help? I am new to BASIS.