Hello Vino,
Please provide the output of the commands:
dbmcli db_enum
dbmcli inst_enum
sdbregview -l
xinstinfo SDB
Is your database UNICODE ? If you are not sure, check the value of parameter _UNICODE using this command
"dbmcli on SDB> param_directget _UNICODE"
The upgrade log are usually under /sapdb/data/wrk directory - if you can find it, attach it to this thread.
Regards, yashwanth