At 05:16 PM 26/05/2006, you wrote:

>one of the other exception is
>"error reading data from connection"

Yes, they both mean that the client has lost the connection to the
server. It's not an IBO problem...however, there's a thread on
firebird-support at the moment dealing with a similar problem, using
the Windows Virtual Server 2003 vpn. I get the feeling that, when
that one's solved, problems like yours will be solved too.

What you can do with your IBO client, though, is catch those
particular exceptions and write a reconnnection handler -- see the
thread from a few days ago started by rjschappe, subject "Unable to
complete network request to host".

Still, for my money, I'd rather see a definitive keep-alive solution
for these aggressive vpn managers.

Helen