Subject Re: [firebird-support] Re: Lock conflict
Author Dmitry Yemanov
glenndetollenaere wrote:
> we use the Super Server binaries on Win XP / Vista.

When the client connection is broken, Firebird detects it after the
keep-alive interval (which is 2 hours by default on Windows) and then
forcibly closes the connection and releases all the locks it owned.

So I think you should just configure the Windows TCP keep-alive feature