Database mirroring using ODBC Driver 17 for SQL Server

Connection string

This Microsoft ODBC Driver 17 for SQL Server connection string can be used for connections to SQL Server 2019, SQL Server 2017, SQL Server 2016, SQL Server 2014, SQL Server 2012 and SQL Server 2008.

If you connect 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.

Driver={ODBC Driver 17 for SQL Server};Server=myServerAddress;
Failover_Partner=myMirrorServerAddress;Database=myDataBase;
Trusted_Connection=yes;

This one is working only on Windows, not on macOS or Linux. 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.

Please note if you are using TCP/IP (using the network library parameter) and database mirroring, including port number in the address (formed as servername,portnumber) for both the main server and the failover partner can solve some reported issues.