Asm Health Checker Found 1 New — Failures Updated

If you are using External Redundancy , a single disk failure can make the entire disk group unrecoverable ("toast").

When a DBA sees "ASM Health Checker found 1 new failures updated," the response must be methodical. Panic is the enemy; the alert is a tool, not an accusation. The administrator must query the V$ASM_HEALTH view or check the alert logs to pinpoint the specific component that triggered the failure. Was it a rebalance operation that failed? Is a disk currently offline? Is there a quorum failure in a clustered environment? The alert is the starting gun for a forensic investigation.

[Your Name/Role] Status: Awaiting resolution asm health checker found 1 new failures updated

When managing Oracle Automatic Storage Management (ASM), receiving an alert stating can be alarming. This message usually appears in the ASM alert log or Oracle Enterprise Manager (OEM) and indicates that the background health check process has detected a potential issue with the disk group structural integrity or a device, which requires immediate attention to avoid downtime.

Look for disks showing UNKNOWN , CANDIDATE , or OFFLINE instead of MEMBER . An offline disk confirms a hardware or pathing issue. Step 4: Step-by-Step Resolution Playbook Scenario A: The Disk Group is Out of Space ( ORA-15041 ) If you are using External Redundancy , a

. This is often triggered when a monitored resource crosses a predefined threshold or a critical daemon stops responding. Immediate Review Checklist To review and resolve this failure, follow these steps: Identify the Failure Source : Navigate to Security > Reporting > Settings > ASM Alerts

The "ASM Health Checker found 1 new failures" alert is not a cause for panic but an invitation to investigate. With a methodical approach—checking the alert log, using V$HM_RUN , running a manual ALTER DISKGROUP CHECK , and applying the appropriate repair—you can resolve most issues without data loss. The administrator must query the V$ASM_HEALTH view or

Query V$ASM_DISK to find disks with a status of OFFLINE or HUNG .

If a disk was formatted or lost its header, you may need to restore the ASM disk header from a backup or use KFED to repair the block header. Scenario B: ORA-15066/ORA-15063 During Disk Addition

Understanding the root causes of ASM health check failures is crucial for prevention. Here are some common scenarios: