How do I fix the "Unknown Database" error when connecting to MySQL?

ERROR 1049 (42000): Unknown database 'default'

An Unknown Database error occurs when:

  • You connect to the wrong cluster.
  • You connect to a database that doesn’t exist in your specified cluster.

If you are getting this error:

  • Verify that you are using the correct hostname to connect.
  • Verify that you’ve created the database in your cluster of choice.
Adjust the sort_buffer_size value while assessing its impact on memory consumption and query performance.
Check for query timeouts and ensure your network connection is stable.
Verify the hostname is correct and check for DNS resolution issues.