MySQL Connection Error: How to Fix \'Unable to load authentication plugin \'caching_sha2_password\'\'?

Unable to Load Authentication Plugin 'caching_sha2_password' Error during MySQL Connection

In Eclipse, when attempting to start an application, you may encounter the following error:

Could not discover the dialect to use. java.sql.SQLException: Unable to load authentication plugin 'caching_sha2_password'.

Issue:

This error occurs because MySQL 8.0.4 and later versions have changed the default authentication plugin to 'caching_sha2_password' from 'mysql_native_password'. However, your application is configured to use the old plugin.

Resolution:

To resolve this issue, you need to modify the MySQL user's authentication method to use the 'mysql_native_password' plugin. Follow these steps:

1. Connect to your MySQL database using a MySQL client or tool.
2. Run the following command, replacing 'username' and 'password' with the actual credentials for the user:

ALTER USER 'username'@'localhost' IDENTIFIED WITH mysql_native_password BY 'password';

This command will change the authentication method for the specified user to 'mysql_native_password'.

Additional Information:

The 'caching_sha2_password' plugin provides enhanced security compared to 'mysql_native_password'. However, if your application is incompatible with the new plugin, you may need to continue using 'mysql_native_password'. Refer to the MySQL Reference Manual for more details on authentication plugins.

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