> We have several lists that are connected to either Oracle or SQL > Server database tables. > > We have been getting more and more of these errors stating that the > list in use by another process. > > Can someone explain exactly what is going on? > > The timing of this particular example 00:03:02 leads me to believe > that Listserv keeps trying to access the list, since I doubt that > there is user trying to mail to this list at midnight. Midnight is when digests are sent. It appears to me the problem is what it states, another process has a lock on the file. This is generally a backup process or perhaps a virus scanner. Since this is just after midnight, I'll bet on the backup process.