MySQL returns “Too many connections” when all ordinary client connection slots are in use. The server-wide limit is controlled by max_connections, but a shared-hosting account normally does not control that server setting.
- Determine whether one application or many sites fail at the same time.
- Review application code/plugins for connection leaks or unexpectedly high concurrency.
- Check scheduled jobs, imports, crawlers, or traffic spikes that coincide with the error.
- Reduce unnecessary parallel jobs and ensure applications close/reuse connections according to their framework’s design.
Raising a server-wide connection limit without understanding why connections are accumulating can increase resource pressure. Account-level troubleshooting should focus first on the workload creating the connections.
