Asm Health Checker Found 1 New Failures Updated Jun 2026

Based on real‑world case studies and Oracle diagnostic reports, the “found 1 new failures” alert is most frequently caused by:

By following these steps, you can troubleshoot and resolve ASM health checker failures, ensuring the stability and performance of your Oracle database and ASM environment.

The message "ASM Health Checker found 1 new failures updated" indicates that during a scheduled or automatic health check run, the checker has discovered exactly one new persistent data failure that was not previously recorded. This could be due to:

Longer-term remediation and prevention

The disk group has dropped offline. This indicates a loss of disk quorum. 3. Check for Ongoing Rebalance Operations asm health checker found 1 new failures updated

The message is not a death knell for your database. Instead, it is an early warning system that Oracle ASM has detected a single, specific anomaly in your storage infrastructure. By methodically examining the ASM alert log, querying the dynamic performance views, and investigating the OS/storage layer, you can quickly identify whether the issue is a transient path failure, an offline disk, or a more serious metadata corruption.

The first piece of evidence is the alert log entry itself. The alert log is located in the Automatic Diagnostic Repository (ADR). For a typical ASM instance, the path is:

Once you resolve the underlying storage, space, or permission issue, update the health checker status so it resumes active monitoring. tfactl compliance check --clear Use code with caution.

: ASM cannot find a disk that is expected to be part of a disk group. Based on real‑world case studies and Oracle diagnostic

RMAN> RESTORE DATAFILE '<file name>'; RMAN> RECOVER DATAFILE '<file name>';

SQL> SELECT operation, state, power, est_minutes FROM v$asm_operation; Use code with caution. Scenario C: Permissions and Ownership Resets

In critical production databases, treating this alert with high urgency prevents localized physical disk faults from cascading into total cluster outages. What Triggers the ASM Health Checker?

Troubleshooting "ASM Health Checker Found 1 New Failures Updated" in Oracle Environments This indicates a loss of disk quorum

The most direct diagnostic command is the built‑in disk group validation:

. It means the internal health checker has identified a failure in a service or a violation that requires attention. Common Causes Service Instability : Critical daemons (like asm_config_server ) might have hung or crashed. Resource Exhaustion : The disk partition for logs (

Apply the latest Oracle Grid Infrastructure patches. Oracle frequently releases fixes for ASM bugs that could otherwise lead to disk group corruption.

Wait for the recovery to complete (monitor via v$asm_operation ). Once done, the health checker will automatically clear the failure and log a corresponding "failure cleared" message.

Once you have identified the root cause, apply the appropriate repair strategy.

Look for active rebalancing or recovery operations that may have been triggered by the failure.