I have tried some solution found by google, as disable ssl in admin--> database [Additional JDBC connection string options].
But when click "save" button, error message is shown in page as "java.sql.SQLException: Trying to connect with ssl, but ssl not enabled in the server.
@floyd
Okay, when you’ve migrated from H2, then have a look in database table metabase_database in the column details, and make sure there’s no ssl=true or change it to false.