What is the status shown in the SUM console ?
Have you checked these logs ?
TABUPOSTSHD.ELG
E:\usr\sap\OHM\SUM\abap\log\TOOLOUT.LOG
E:\usr\sap\OHM\SUM\abap\log\TP.ECO
E:\usr\sap\OHM\SUM\abap\log\SAPup.ECO
Also bear in mind that you have Java stack as well so you need to check the logs for them as well.
E:\usr\sap\OHM\SUM\java\log and E:\usr\sap\OHM\SUM\java\tmp
Regards
RB