Error 89503 | Inno dB Storage Engine Bug

If you’re encountering MySQL Error 89503, it’s not a standard MySQL error code officially documented by MySQL (which typically uses codes in the 1000–2000+ range, like ERROR 1064 for syntax errors).

According to MySQL bug reports, this error (Bug #89503) is associated with situations where innodb_purge_stop_now=1 is set, causing an assertion failure like purge_sys->n_stop == 0 during the shutdown process. This has been observed in debug builds of MySQL versions like 8.0.4rc and 5.7.21.

What does this mean for you?

• Likely a bug: If you’re seeing “Error 89503” with MySQL, it’s highly probable you’ve encountered a known bug within the MySQL server itself, especially if it’s accompanied by messages about “Assertion failure” or “InnoDB”.
• InnoDB corruption or recovery issues: Assertion failures in InnoDB often point to underlying data corruption or issues during the recovery process. MySQL might be trying to recover from an unclean shutdown or a corrupted tablespace.
• Server crashes: This error is typically reported when the MySQL server crashes or fails to start.

Troubleshooting and Potential Solutions:

Error 89503 in a MySQL context could come from one of the following:

✅ 1. Third-party Tool or Connector

If you’re using a GUI (like MySQL Workbench, phpMyAdmin, DBeaver) or a language connector (like Python’s mysql-connector, PHP’s PDO, etc.), Error 89503 might be specific to that tool/library, not MySQL itself.

Example: A Python library might throw 89503 as a custom error for a connection or authentication failure.

✅ 2. Proxy Layer (e.g., SQL Gateway, Middleware)

If your MySQL is accessed through a proxy layer, API gateway, cloud database interface, or ORM, the error may originate from that layer rather than MySQL itself.

Also Read : Oregon Code 15c-16.003 Fake Code

✅ 3. Cloud Providers

If you’re using cloud-hosted MySQL (e.g., Google Cloud SQL, AWS RDS, PlanetScale, etc.), error 89503 could be a custom platform error, often related to:

• Authentication failure

• Exceeded connection quota

• Billing/account issue

• Throttling or rate limiting

🔧 What You Can Try:

1. Check your error message logs – There may be more detail than just Error 89503.

2. Ensure your credentials are correct (host, port, username, password).

3. Try connecting via CLI:

   mysql -u your_user -p -h your_host


   and see if the error still occurs.

4. Search in the tool or platform’s docs (e.g., “DBeaver error 89503”, “AWS MySQL error 89503”).