Busytime.nsf is also called Free Time Database as all of the connected users scheduling information is holded by this file. It provides the information about free time of the users which can be used in arranging meetings. If this free time information of users is known, then it becomes easy to schedule the meeting between users.
After deploying the IBM Notes and Domino sever for the first time:
For non-clustered mail server, the schedule manager generates the busytime.nsf database instantly and also make entry in the file for users who have their information in the Calendar or whom having any Mail file are on the same server.
The schedule manager also creates the clubusy.nsf file for clustered mail server and stores the information Notes user free time.
If your busytime database is corrupted, then a better way to rebuild it again is to first shut down the server and delete the busytime.nsf file and let the server to rebuild this. For clustered setup, you will have to shut down the servers from your cluster and then delete the clubusy.nsf database.
A different method which do not require server rebooting:
Busytime.nsf is a lotus notes database which provides the information about the users availability for scheduling any meetings between them. In this article, we have discussed about the free time database and how it updates the busytime nsf file. Also know how to rebuild it and the benefits of IBM Notes Free Busytime.nsf database.