Trying to use the firebird embedded server - Speci

问题:

Running on Windows 7 using Visual Studio 2005, I am attempting to use the embedded firebird server. Having followed installation details provided, I get the message:-

Specified server type is not correct.

I am using:-

FirebirdSql.Data.FirebirdClient.dll version 2.5.2.0.

fbembed.dll version 2.5.0.26074

I copied the entire contents of the zip file Firebird-2.5.0.26074-0_Win32_embed.zip to my application directory, as there seem to be a variety of ideas as to what should be there.

I also copied fbembed.dll and renamed it to gds32.dll and fbclient.dll as has been suggested elsewhere.

My connection string is:-

User=SYSDBA;Password=masterkey;database=C:\Database\EMPLOYEE.FDB;servertype=1; Dialect=3;";

All users have full control on the database file.

I have a firebird server running on the same machine, I ensured the service was stopped to avoid any confusion.

The stack trace at the failure shows:-

at FirebirdSql.Data.FirebirdClient.ClientFactory.CreateDatabase(FbConnectionString options) at FirebirdSql.Data.FirebirdClient.FbConnectionInternal.Connect() at FirebirdSql.Data.FirebirdClient.FbConnectionPool.Create() at FirebirdSql.Data.FirebirdClient.FbConnectionPool.CheckOut() at FirebirdSql.Data.FirebirdClient.FbConnection.Open()

Appreciate any ideas.

回答1:

The very latest stuff (8/2015) doesn't seem to like ServerType=1 in the connect string but rather using the stringbuilder:

        FbConnectionStringBuilder cs = new FbConnectionStringBuilder();
        cs.UserID = "SYSDBA";
        cs.Password = "masterkey";
        cs.Database = Form1.DataBaseFullPath;
        cs.Charset = "UTF8";
        cs.Pooling = false;
        cs.Dialect = 3;
        cs.ServerType = FbServerType.Embedded;

        FbConnection Connection = new FbConnection(cs.ToString());

If you look at the result you will see the syntax is "...;server type=embedded". Space between "server" and "type".

回答2:

Try adding the DataSource in the ConnectionString, e.g.

Data Source=localhost;

[Edit]

Also, have a look at this SO question. It mentions a couple of DLLs that were additionally needed to run Firebird as embedded.

回答3:

Whatever the problem was, it has been resolved by using the latest version (2.7.5) of the Firebird dot net provider (thanks to Jiri on the firebird mailing lists).