# MySQL Support

Generated on 12 Mar 2026

MySQL is an open source, object-relational database built with speed and reliability in mind. Its large and active developer community has created many third-party applications, tools, and libraries that expand MySQL’s functionality.

[How do I fix the mysqldump "Couldn't execute FLUSH TABLES Access denied" error?](https://docs.digitalocean.com/support/how-do-i-fix-the-mysqldump-couldnt-execute-flush-tables-access-denied-error/index.html.md): Update backup user permissions, remove the –single-transaction flag, or downgrade mysqldump.

[Why does MySQL shut down when importing data with the source command?](https://docs.digitalocean.com/support/why-does-mysql-shut-down-when-importing-data-with-the-source-command/index.html.md): Use MySQL’s import command instead of source for handling large data imports.

[How do I fix the "1227" error?](https://docs.digitalocean.com/support/how-do-i-fix-the-1227-error/index.html.md): Remove or replace the DEFINER in the dump file.

[How do I fix the "Out of sort memory" error?](https://docs.digitalocean.com/support/how-do-i-fix-the-out-of-sort-memory-error/index.html.md): Adjust the sort\_buffer\_size value while assessing its impact on memory consumption and query performance.

[How do I fix an "Access Denied" error when connecting to MySQL?](https://docs.digitalocean.com/support/how-do-i-fix-an-access-denied-error-when-connecting-to-mysql/index.html.md): Verify your connection string, login credentials, and user permissions.

[How do I fix the "Connection Refused" error when connecting to my database?](https://docs.digitalocean.com/support/how-do-i-fix-the-connection-refused-error-when-connecting-to-my-database/index.html.md): Verify the connection string, ensure correct port usage, and add your local machine to the database cluster’s trusted sources.

[How do I fix the "Connection Timed Out" error when connecting to my database?](https://docs.digitalocean.com/support/how-do-i-fix-the-connection-timed-out-error-when-connecting-to-my-database/index.html.md): Add your machine to the database cluster’s list of trusted sources in the firewall settings.

[How do I fix the "Host is Blocked" error when connecting to MySQL?](https://docs.digitalocean.com/support/how-do-i-fix-the-host-is-blocked-error-when-connecting-to-mysql/index.html.md): Check for query timeouts and ensure your network connection is stable.

[How do I fix the "Invalid Parameters and Values" error when connecting to my database?](https://docs.digitalocean.com/support/how-do-i-fix-the-invalid-parameters-and-values-error-when-connecting-to-my-database/index.html.md): Verify the format and values in the connection string for typos or formatting errors.

[How do I fix the "Lost Connection" error when issuing a query on MySQL?](https://docs.digitalocean.com/support/how-do-i-fix-the-lost-connection-error-when-issuing-a-query-on-mysql/index.html.md): Check your network connection and optimize your query.

[How do I fix the "No Such File or Directory" error when connecting to my database?](https://docs.digitalocean.com/support/how-do-i-fix-the-no-such-file-or-directory-error-when-connecting-to-my-database/index.html.md): Prepend your database client command to the connection string.

[How do I fix the "Unknown Database" error when connecting to MySQL?](https://docs.digitalocean.com/support/how-do-i-fix-the-unknown-database-error-when-connecting-to-mysql/index.html.md): Ensure the hostname is correct and confirm the database exists in your specified cluster.

[How do I fix the "Unknown Host" error when connecting to MySQL?](https://docs.digitalocean.com/support/how-do-i-fix-the-unknown-host-error-when-connecting-to-mysql/index.html.md): Verify the hostname is correct and check for DNS resolution issues.

[How do I fix the authentication error when connecting to MySQL?](https://docs.digitalocean.com/support/how-do-i-fix-the-authentication-error-when-connecting-to-mysql/index.html.md): Update user settings or change the password type to resolve authentication errors in MySQL.

[How do I fix the SSL "unknown error number" error when connecting to MySQL?](https://docs.digitalocean.com/support/how-do-i-fix-the-ssl-unknown-error-number-error-when-connecting-to-mysql/index.html.md): Upgrade your client to support TLSv1.2 or TLSv1.3 for secure MySQL connections.

[Why is my cluster rebalancing/resizing?](https://docs.digitalocean.com/support/why-is-my-cluster-rebalancing/resizing/index.html.md): We are currently processing the cluster, most likely for maintenance. You can expect no downtime or performance issues.