If your crashes are random or sporadic, then do this step. If your crashes occur every single time you run the database, then this step won't fix the issue (although bad memory may be the reason why the corruption occurred in the first place).
Start the test and let it run during working hours. The reason for this is because other factors in the building such as noise on the power circuits can cause memory errors, so you want to try to keep the variables the same.
If you have memory errors, then you will need to identify whether it is due to bad memory in the computer, or some other factor. This is beyond the scope of this document however.