Asm Health Checker Found 1 New Failures Updated High Quality 🔥

If the disk group won't mount, use the kfed utility (e.g., kfed read ) to check for corrupted metadata or invalid disk headers.

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

Set the home to the ASM instance, e.g., set home diag/asm/+asm/+ASM1 .

Often, the health checker finds a "failure" simply because a storage array is too slow. Monitor your OS-level tools like iostat or sar . asm health checker found 1 new failures updated

: Specific block corruption within a disk group. Step-by-Step Response Plan 1. Analyze the Alert Log

SELECT * FROM v$asm_disk_iostat WHERE read_errs > 0 OR write_errs > 0 OR bytes_read = 0;

Even with healthy physical disks, logical corruption can affect the ASM file directory or the allocation tables. When a health checker inspects the Dictionary Integrity or the ASM Structure, it may flag a metadata object (like a file template or a disk group attribute) as inconsistent. If the disk group won't mount, use the kfed utility (e

If errors are found, you may need to:

In effect, the ASM Health Checker acts as a built‑in, automated diagnostics tool that confirms whether your storage structures remain healthy without waiting for user queries to hit a corrupted block.

Drop the damaged disk from the ASM diskgroup to allow ASM to rebalance data to surviving disks. Command: ALTER DISKGROUP DROP DISK ; 4. Preventing Future Failures To minimize "1 New Failure" alerts: Monitor Disk IO: Regularly query v$asm_disk_iostat . Often, the health checker finds a "failure" simply

This comprehensive guide will dissect every aspect of this error message. We will explore what the ASM Health Checker is, why it triggers this alert, how to diagnose the specific failure, and step-by-step remediation strategies.

You can run Health Monitor checks automatically using Oracle Enterprise Manager (OEM) or by scheduling a DBMS_HM.RUN_CHECK PL/SQL job. For example, to run a database structure integrity check every Sunday:

The ASM Health Checker constantly audits the storage environment's structural and operational integrity. When it logs an updated failure count, it is usually responding to one of four common architecture failures: