Solution Manager 7.1 stack upgrade preprocessing phase shadow_IMPORT_INC running long time

Hi Guys ,

I'm performing Solution manager 7.1 stack upgrade using SUM currently at preprocessing "shadow_Import_inc phase running since last 7hours with out any update I tried to stop the update using sum options it prompts " stopping of sum process not possible " . is this the actual behaviour or something went wrong withthe upgrade .

Even i tried to implement oracle parameter "_use_zero_copy_io=false" but can't stop the sum process runningg now .

kindly share your suggesstions regarding the above scenario .