There's an extra possibility maybe as well... Using a text file as a log
file either in addition or instead of Hutch's solution. The file could have
all sorts of stuff in it including the date and time of various processes,
amounts of data processed and so on. Examining a text file is very quick
even with hundreds of lines.

The text file could even be emailed to a person to inspect, either in the
mornings or when something happens that needs intervention... glitches,
bottlenecks and so on.

If you got really fancy you could make a front end to list files  or look at
them in a list box on a user form!