> Is there a way to keep the connection active from the client side,
> other than using dummy query + timer? If not, what would be the
> fastest query? Select 1 from rdb$database?
> Unfortunately rewriting application to automatically reconnect is not
> an option at the moment :(

You mean how to generate some network traffic ?
I would call isc_database_info( ), since it does not require
opened transaction.

Ivan