Re: [IBPP-DISCUSS] Exclusive Handle in Windows 7

[Jens S. <jen...@go...>]

Hm...do the apps run under different users?


2011/6/15 Daniel Casper <dan...@gm...>:
> We have a product that's done in two components - a Service written in C++
> and a User Interface written in Python. They share a Firebird Database for
> configuration. Because they are separate processes we are running the
> Firebird Super Server Service so that they can both have an open connection
> when necessary. This works properly on Windows XP, but does not work on
> Windows 7.
>
> The C++ Service uses the IBPP Library. The Python UI uses kinterbasdb from
> firebirdsql.org.
>
> On Windows 7 I am able to launch multiple instances of the User Interface
> and each one is able to establish a connection. I believe this indicates
> that the Firebird Service is working properly. If even a single instance of
> the User Interface is running the Service cannot start. If the Service is
> running I cannot launch any instances of the User Interface. This seemingly
> points to the Service component using an exclusive handle in some way. The
> code that it uses to connect is:
>
> IBPP::DatabaseFactory(host, name, user, password)
>
> Where host is 'localhost', name is the path to our database, and user and
> password are self explanatory. This mirrors the documentation for the IBPP
> library. When the Service has an open connection to the Database I can
> verify via netstat that there is an established socket, as expected. At this
> point, I'm at a loss. I haven't been able to find anything related to
> Firebird and Windows 7 that would explain the behavior, and the code is
> functional on XP. Any ideas?
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