--- In IBObjects@yahoogroups.com, Helen Borrie <helebor@...> wrote:

>
> At 09:48 PM 31/01/2006, you wrote:
> >I keep getting this error message when trying to connect usinq IBSQL:
> >
> >ISC ERROR CODE:335544375
> >ISC ERROR MESSAGE:
> >unavailable database
> >
> >I am using the latest Firebird embedded version and can connect easily
> >to the fdb file with IbExpert.
> >
> >When using IBSQL I point to the database file ...\DB.fdb with
> >Username SYSDBA & password masterkey. I have both fbclient.dll &
> >gds32.dll in the same directory.
> >
> >What am I doing wrong?
>
> Same directory as what? fbclient.dll and gds32.dll need to be in the
> same directory as the application (ib_sql.exe). If this wasn't what
> you meant by the statement above, then either copy ib_sql.exe into
> your application directory and run it from there, or copy the two
> dlls into the directory where ib_sql.exe is.
>
> Note, too, that when using embedded you have to duplicate the
> necessities for *each* application directory structure.
>
> If all those things are covered, then the next thing to look at is
> whether you are concurrently working on this database with some other
> app, e.g. IBExpert, isql, the Delphi IDE, or whatever. The first
> instance of embedded gets an exclusive lock, making the database
> unavailable for any other instances.
>
> You'll bump into the same restriction if you try to do your
> development using the embedded version. The first connection is
> usually Delphi. It wins (gets the exclusive lock) and you won't be
> able to run the app from the IDE. Use the full server for
> development and use embedded when you deploy.
>
> Helen
>

That did the trick.
Many thanks for your assistance. I greatly appreciate it.

Mitch