If the ASM manages audit trails or session data, the database writer may have hit a connection limit. The health checker attempted to write a "heartbeat" record and timed out.
If a disk failed but redundancy allowed the group to stay online, add a replacement disk to trigger an automatic rebalance. asm health checker found 1 new failures
The checker alerts administrators if read/write operations exceed predefined latency thresholds (typically over 20 milliseconds for sustained periods). If the ASM manages audit trails or session
When this alert surfaces in your alert log or monitoring dashboard (like Enterprise Manager), it means ASM has identified a specific issue that could potentially impact the availability or performance of your storage layer. and resolving the health checker alert
This will provide a , the severity (CRITICAL or HIGH), and a brief description of what went wrong. 3. Common Causes for ASM Failures
To get the granular details, look at the . You can usually find this in your Oracle Base directory: $ORACLE_BASE/diag/asm/+asm/+asm1/trace/alert_+asm1.log
This alert is not a sign of imminent database doom, but it is a critical early warning that requires a structured and thorough response. This comprehensive guide provides a complete reference for understanding, diagnosing, and resolving the health checker alert, along with actionable best practices to prevent it from occurring again.