2159642 - How to get detailed log information of R3trans & tp during upgrade by increasing trace level

The R3trans/tp process is terminated while upgrading ABAP system with SUM, but only error codes are returned, no detailed information can be found in log files.
 
Error messages may be similar to the below.
 
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2EETW000 one entry for table EHFNDC_ACTSUB_T not copied - both insert and
update failed.
 
4 ETW000 [ dev trc,00000] statistics db_con_rollback (roll_total=0, roll_tx=0)
4 ETW000 Disconnected from database.
4 ETW000 End of Transport (0008).
4 ETW000 date&time: 14.04.2015 - 10:30:15
4 ETW000 1 error occured.
2EETP200 Export with errors, request will not be imported
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3 ETW677 "LIMUCOMMSAPK-707BDINBICONT" not imported in this step.
3 ETW674Xstart import of "LIMUCOMMSAPK-707BFINBICONT" ...
2EETW000 internal error in tw_mod_enhobj: nametabinfo of 'ENHOBJ~' not yet read
1 ETP111 exit code           : "8"
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ABAP system with upgrade/update running

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