Right, thanks for quick reply.

I'll just elaborate a little to be sure then.

We have a service on the server which access the database, and also application on the client that access database. Both these applications are 32bit.

However, we are looking at installing the 64 bit version of Firebird on 64 bit servers, even though the applications will remain 32 bit.

So, going by this answer, we would continue to use the 32 bit version of fbclient.dll, regardless of whether the installed Firebird is 32bit or 64 bit.

I guess the question is, is there any real benefit of installing the 64 bit version of Firebird on 64 bit servers, when the applications will be remaining as 32 bit?

--- In firebird-support@yahoogroups.com, "Mark Rotteveel" <Avalanche1979@...> wrote:
>
> > Sorry, but I think this may be a really newbie question, but I can't
> > figure it out myself without installing Firebird on different servers and
> > clients, and thought you guys might know the answer with me going to alot of
> > trouble.
> >
> > I am developing an application that will involve installing Firebird on
> > either a 64bit or 32bit server, then clients that connect can also be either
> > 32bit or 64bit.
> >
> > My query is this, if Firebird is installed on a 64bit server, if the
> > client is 32 bit, then which version of fbclient.dll is required on the pc, 32
> > bit or 64 bit?
> >
> > Does the 32bit dll communicate with the 64 bit server?
> >
> > Also vice versa, if Firebird is installed on a 32 bit server, and the
> > client is 64 bit, which version of the fbclient.dll is required?
>
> A 32 bit client application requires the 32 bit fbclient.dll (even if running on 64 bit OS!), a 64 bit client application requires a 64 bit fbclient.dll. The type of server has nothing to do with this decision, only the client architecture.
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