When you encounter a “Warehouse is suspended” error in Snowflake, it means that the virtual warehouse you’re trying to use is currently in a suspended state. A suspended warehouse does not process queries and is effectively paused. To address this error and resume normal processing, follow these steps:
1. **Identify the Suspended Warehouse**:
– Check the error message or query history to determine which virtual warehouse is suspended.
2. **Verify the Reason for Suspension**:
– The error message might provide some information about why the warehouse was suspended. Common reasons include resource constraints, scaling limits, or administrative actions.
3. **Review Warehouse Activity and Queries**:
– Look at the query history and recent activity for the warehouse. Identify any resource-intensive queries that may have led to the suspension.
4. **Unsuspend the Warehouse**:
– If the suspension was not intentional and you want to resume processing, you can unsuspend the warehouse using the following steps:
– In the Snowflake web interface, navigate to the “Warehouses” tab.
– Locate the suspended warehouse, select it, and click the “Resume” button.
– Alternatively, you can use SQL commands to unsuspend a warehouse:
ALTER WAREHOUSE RESUME;
5. **Monitor and Optimize**:
– Once the warehouse is unsuspended, monitor its activity and performance. Consider optimizing queries or adjusting warehouse settings to prevent future suspensions.
6. **Resource Management**:
– If the warehouse is repeatedly getting suspended due to resource constraints, you may need to adjust the warehouse size or enable concurrency scaling to better handle the workload.
7. **Identify and Address Query Issues**:
– Review the queries that caused the warehouse suspension. Optimize or refactor these queries to improve their performance and resource consumption.
8. **Consider Query Queues**:
– If you have Snowflake Enterprise Edition, consider using query queues to prioritize and manage query workloads to prevent warehouses from becoming overloaded.
9. **Contact Snowflake Support**:
– If you’re unable to determine the cause of the suspension or need assistance with optimizing queries, you can contact Snowflake support for guidance.
Remember that warehouse suspensions are often a result of resource limitations and performance considerations. Regularly monitoring your workloads, optimizing queries, and adjusting warehouse settings can help prevent suspensions and ensure smooth processing in Snowflake.