How to deal with "aborted activity" & activity taking long time to execute

Hi fellow SDN members,

Under "Data Transfer" phase, most of the activities have successfully executed. The issue is:

1. One of the activity"Start Data Selection for Header Tables" is taking very long to time,infact it has been more than 24 hours with same state. When I click on the Tasks icon next to the activity, I can see that out of 97 sub-activities, 95 have been completed where as it is showing 2 activities as "not yet started". this has been the state for more than 24 hours.

2. Another activity "Start Data Transfer" has been aborted. On clicking the Tasks icon ,the subactivities state is shown as

out of 21,927 sub-activities, 21,916 have completed successfully,

                                              9 are "Completed with error"

                                              2 are "not yet started"

I have executed this activity three times, but the sub-activities state has been the same.

Please suggest on these issues.

thanks,

Mohammed Tauseef Ahmed