Typically, you set up one log file resource monitor at a time on a log file. However, you can set up a variety of monitoring plans, consisting of a number of different schedules that are all defined and enabled to run at different times, for a specific log file resource. It is most beneficial to have only one active log file monitor enabled at a time for any given log file.
Once you create a log file monitor, you can edit it, copy it as the basis for a new log file monitor, or delete it.
