When connecting Looker to your database, you can specify additional Java Database Connectivity (JDBC) parameters that...

When connecting Looker to your database, you can specify additional Java Database Connectivity (JDBC) parameters that you want Looker to include when it communicates with your database driver. In order to keep your connection secure, Looker now has an allowlist for the additional JDBC parameters that are supported for each database dialect.

• If you try to create or update a connection that uses unsupported JDBC parameters, Looker will display an error message that shows the non-allowed parameters. • If you have an existing connection that uses unsupported JDBC parameters, Looker will remove the parameters and then connect to your database.

For a list of the supported JDBC parameters for your dialect, see the "Supported JDBC parameters" section of the database configuration instructions page for your dialect.