Error
Error Code:
1639
MySQL Error 1639: Debug Sync Point Timeout
Description
This error indicates that an internal MySQL debug synchronization point failed to be reached within the expected timeframe. It typically occurs during advanced debugging or testing scenarios where specific internal server states are being monitored or controlled, suggesting a potential internal server hang or misconfiguration of debug features.
Error Message
debug sync point wait timed out
Known Causes
3 known causesInternal Server Process Hang
A critical internal MySQL process or thread involved in the debug synchronization became unresponsive or deadlocked, preventing the sync point from being reached.
Incorrect Debug Sync Configuration
The `debug_sync` system variable or related debug settings might be incorrectly configured, leading to unrealistic timeout values or impossible sync point conditions.
System Resource Exhaustion
During intensive debugging sessions, the server might have run out of CPU, memory, or I/O resources, delaying the internal operations necessary to hit the sync point.
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