This was a good fix to a problem that caused much consternation with some clients of mine in the past.
Client: “The users are getting an error that the Notes database is in use by another person. What can we do?”
Me: “Restart Domino 🙂 ”
Me: “Sorry, but we’ll have to. I can check to see if you have a backup process or AV that for some reason has a lock on the database, but we’ll have to restart Domino.”
Anyway, here are the details on the fix from 9.0.1 FP3:
JPAI9CTMWE (LO82330) – Fixed an intermittent issue that would cause a single Notes database to be locked preventing anyone from opening the database until the Domino server is restarted. Before this fix, users would experience the following error attempting to open the database: “This database is currently in use by another person or process, and cannot be accessed at this time. In order to share a Notes database, it must be accessed via a Domino Server by all users of the database.”