On 20-12-2018 14:49, Alan J Davies Alan.Davies@...
[firebird-support] wrote:

> Thanks John - spot on! I had the connection set correctly in the
> program's connection string but in Ibexpert (my database tool of choice)
> I had set it as Local to test FB3 when I set it up and had not changed
> it to remote tcp/ip with server name etc. It works perfectly now and I
> can happily start upgrading other user systems.

This could indicate that you were previously using Classic or
SuperClassic (which opens a database with a shared filelock), and are
now using SuperServer (which opens a database with an exclusive filelock).

Mark
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Mark Rotteveel