Justin Xi ZHU wrote at 2003-10-28 12:14 +1000:

I tried to install two Zope products on the same computer. One of them didn't stop cleanly. From then on, when I try to run the other product. The error message appeared.

' Could not lock the database file. There must be another process that has opened the file. '

I made sure all other processes are closed. The message still appeared. With the assistance of a member of the list, we isolated the problem to the Zope product that didn't stop cleanly, locked the 'Data.fs.lock' file and failed to delete it. We need to delete it manually. However, when I try to delete it. This error message appeared.

' Cannot delete Data.fs: It is being used by another or program. Close any programs that might be using the file and try again. ' Again, I closed all applications. The error persists.

Your operating system (smells like a Windows variant) has a different opinion. Try to convince it (by e.g. restarting it). -- Dieter