I tried to delete away messages from the persistence layer. However, each time when i tried to run the job, it fails immediately and came up with the error "Complete unfinished copy job first" and i went to Job Overview (in SXMB_ADMIN) and click on "rerun copy job" but it seems to be taking forever to complete. It has been running for 70k+ seconds (i.e. >12 hrs).
Could someone advise if this is normal? Did i miss out something or didn't do anything?