Asm Health Checker Found 1 New Failures Updated //free\\ Jun 2026

Occasionally, a backup or restore operation (RMAN) can write corrupted blocks, or a storage array can return “stale” data. The health checker detects these blocks as persistent failures, even if the database layer is not yet reporting user‑visible errors.

For a thorough scan, you can also run:

Ensure your disk groups use appropriate redundancy (External, Normal, or High). Under normal redundancy, ensure no single failure group contains all copies of your critical data.

Relying solely on the alert log to discover problems is reactive. A better approach is to ASM health using a combination of tools and automated checks. asm health checker found 1 new failures updated

Command: adrci> show alert -p "message_text like '%error%'" .

Understanding the ASM Health Checker Warning The message is a critical alert generated by the Oracle Automatic Storage Management Cluster File System (ACFS) or Oracle Grid Infrastructure health framework.

Ensure your disk groups have adequate redundancy (Normal or High) to survive a failure. Occasionally, a backup or restore operation (RMAN) can

In the world of database administration, "1 new failure" is rarely just a number; it’s a riddle. She logged into the terminal, the cursor blinking like a nervous heartbeat. As she ran the diagnostic tool, the system confirmed the dread: was reporting a predictive failure on a single member.

While you cannot eliminate every hardware failure, you can greatly reduce the frequency of health checker alerts by following best practices:

Online the disk manually to clear the health checker failure: SQL> ALTER DISKGROUP ONLINE ALL; Use code with caution. Monitor the rebalance operation: Under normal redundancy, ensure no single failure group

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Proactive monitoring—via scheduled health checks, OEM metric alerts, and third‑party tools—ensures that you catch these failures early, often before they impact database availability. In the event of a genuine corruption that cannot be repaired, a robust backup and recovery strategy (including RMAN block recovery) will be your ultimate safeguard.

A disk group can become inconsistent if a disk fails, or if the ASM metadata is corrupted. For example, the message may appear after an abrupt system outage, a failed disk rebalance operation, or a hardware error that left a disk in a FORCING state. The ALTER DISKGROUP ... CHECK command often reveals “mismatched extent maps” or “stale partner relationships.”

SQL> SELECT name, path, state, mode_status, header_status, total_mb, free_mb FROM v$asm_disk;

To understand this error, it's first essential to grasp the role of the .