Health Check of Query Engine timed out
So Im using MySQL and getting this error. how can I solve this?
2 Replies
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When you see a "Health Check of Query Engine timed out" error with Prisma and MySQL, it typically means the Prisma Query Engine couldn't establish a connection to your database within the configured timeout. Here are the most relevant steps and considerations based on the knowledge sources:
1. Check Database Connectivity: Ensure your MySQL server is running and accessible from your application environment. If you're using a cloud provider (like AWS RDS), make sure your IP is whitelisted in the database's security rules and that the database is not overloaded or under heavy backup/load jobs, which can cause timeouts MySQL connection timeout.
2. Tune Connection Pool Settings:
- Increase the
- Increase the
connection_limit in your connection string if your app handles many parallel queries. For example:- Increase the
pool_timeout to give Prisma more time to obtain a connection:
- You can also disable the pool timeout by setting pool_timeout=0, but be cautious as this can cause memory issues if the queue grows too large Optimizing the connection pool.
3. Reduce Parallel Queries: If you are running many queries in parallel (e.g., with Promise.all or in batch jobs), consider reducing the concurrency or batching your requests Connection pool.
4. Update Prisma: Some connection issues have been fixed in recent Prisma releases. Make sure you are using the latest version of Prisma and the Prisma Client Github Issue 7128.
If after these steps the is
sue persists, check your logs for more details and consider if your database server is under heavy load or if there are network issues between your app and the database.
If you need more specific troubleshooting, please provide your Prisma version, connection string, and any relevant logs.
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I would like to take a look at the logs