SQL Native Client 9.0 OLE DB Provider connection strings

SQL Server 2005

Using a non-standard port

If your SQL Server listens on a non-default port you can specify that using the servername,xxxx syntax (note the comma, it's not a colon).

Provider=SQLNCLI;Server=myServerName,myPortNumber;Database=myDataBase;Uid=myUsername;Pwd=myPassword;

The default SQL Server port is 1433 and there is no need to specify that in the connection string.

Enable MARS

Provider=SQLNCLI;Server=myServerAddress;Database=myDataBase;Trusted_Connection=yes;MARS Connection=True;

Database mirroring

If you connect with ADO.NET or the SQL Native Client to a database that is being mirrored, your application can take advantage of the drivers ability to automatically redirect connections when a database mirroring failover occurs. You must specify the initial principal server and database in the connection string and the failover partner server.

Provider=SQLNCLI;Data Source=myServerAddress;Failover Partner=myMirrorServerAddress;Initial Catalog=myDataBase;Integrated Security=True;

There is ofcourse many other ways to write the connection string using database mirroring, this is just one example pointing out the failover functionality. You can combine this with the other connection strings options available.

SQL Server 2000

Using a non-standard port

If your SQL Server listens on a non-default port you can specify that using the servername,xxxx syntax (note the comma, it's not a colon).

Provider=SQLNCLI;Server=myServerName,myPortNumber;Database=myDataBase;Uid=myUsername;Pwd=myPassword;

The default SQL Server port is 1433 and there is no need to specify that in the connection string.

SQL Server 7.0

Using a non-standard port

If your SQL Server listens on a non-default port you can specify that using the servername,xxxx syntax (note the comma, it's not a colon).

Provider=SQLNCLI;Server=myServerName,myPortNumber;Database=myDataBase;Uid=myUsername;Pwd=myPassword;

The default SQL Server port is 1433 and there is no need to specify that in the connection string.