Error
Error Code:
1866
MySQL Error 1866: Binary Log Logical Corruption
Description
Error 1866 signifies that a binary log file, essential for MySQL replication and point-in-time recovery, contains internal inconsistencies. This logical corruption prevents MySQL from correctly parsing or applying log events, often appearing during replication setup, failover, or data recovery processes.
Error Message
The binary log file '%s' is logically corrupted: %s
Known Causes
3 known causesUnderlying Hardware Issues
Disk write errors, faulty memory (RAM), or sudden power loss can lead to incomplete or corrupted writes to binary log files.
Ungraceful Server Shutdown
Abrupt termination of the MySQL server process can leave binary log files in an inconsistent or partially written state.
Filesystem Inconsistencies
Errors or corruption within the underlying operating system's filesystem can directly impact the integrity of MySQL's binary log files.
Solutions
Coming SoonDetailed step-by-step solutions for this error are being prepared. In the meantime, try these general troubleshooting tips:
General Troubleshooting Tips
- Check the error message carefully for specific details
- Review recent changes that might have caused the error
- Search for the exact error code in the official documentation
- Check log files for additional context
- Try restarting the application or service