Error
Error Code:
4081
MySQL Error 4081: Global Connection Memory Limit Exceeded
Description
This error indicates that the MySQL server has reached its global memory cap for all active client connections. It occurs when the combined memory consumption of all connections surpasses the configured `global_connection_memory_limit`, preventing new connections or closing existing ones.
Error Message
Connection closed. Global connection memory limit %llu bytes exceeded. Consumed %llu bytes.
Known Causes
3 known causesExcessive Concurrent Connections
Too many active client connections are simultaneously consuming memory, collectively pushing the server past its `global_connection_memory_limit`.
Memory-Intensive Client Operations
Individual connections are executing queries or operations (e.g., large result sets, complex joins) that demand significant amounts of memory, contributing heavily to the global usage.
Insufficient Global Memory Limit
The `global_connection_memory_limit` server variable is configured with a value that is too low for the application's typical workload and memory requirements.
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