Error
Error Code:
3687
MySQL Error 3687: Internal Regex Library Issue
Description
MySQL Error 3687 indicates an unexpected internal problem within MySQL's regular expression processing engine. This server-side error typically occurs when a regular expression used in a query encounters an unhandled condition, often due to complexity, malformation, or resource constraints during processing.
Error Message
Internal error in the regular expression library.
Known Causes
3 known causesMalformed Regular Expression
The regular expression pattern used in a query might be syntactically incorrect, incomplete, or contain invalid sequences that the regex engine cannot properly parse or execute.
Resource Exhaustion
Extremely complex regular expressions, especially those operating on very large strings or involving extensive backtracking, can exhaust server memory or CPU resources, leading to an internal library failure.
Internal Library Issue
This error could rarely indicate an underlying bug or an unexpected state within MySQL's regular expression library itself, possibly triggered by a specific data pattern or server configuration.
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