Asm Health Checker Found 1 New Failures Updated Link

Ensure RMAN backups are running regularly and that you periodically test the restore process. Corruption in ASM can sometimes be resolved more quickly by restoring affected files from a known-good backup.

If a disk group was previously dismounted or had an unclean dismount (e.g., due to a system crash or hardware failure), it can lead to inconsistencies that trigger health check failures. Metadata might not be fully synchronized across all disks, leading to checksum validation failures when the health checker runs.

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 .

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.

Possible contexts and specific interpretations asm health checker found 1 new failures updated

SELECT group_number, name, path, state, failgroup, mode_status FROM v$asm_disk WHERE state != 'NORMAL';

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.

SQL> ALTER DISKGROUP <disk_group_name> DISMOUNT; SQL> ALTER DISKGROUP <disk_group_name> MOUNT;

Use SQL to identify malfunctioning disks: Ensure RMAN backups are running regularly and that

In this article, we will delve into what this error means in 2026, the common causes, and how to identify and resolve it efficiently, citing best practices from Oracle documentation . What Does This Alert Mean?

Use alert -p "text like '%ORA-15%'" to view specific errors related to diskgroups, such as ORA-15063 or ORA-15196 . 2. Analyzing the Failure Source

Because the Health Checker runs repeatedly—and because failures are tracked as persistent—the message also includes the word “updated” to confirm that the failure count has been refreshed from the latest diagnostic run.

While Oracle performs default health checks, you should also schedule custom checks on a weekly or monthly basis. Use a script that runs ALTER DISKGROUP ... CHECK ALL NOREPAIR and logs the output for review. Metadata might not be fully synchronized across all

$ asmcmd health check ... FAILURE: Disk group DATA – Disk DATA_0002 is offline ...

This warning is often a precursor to (ASM error during rebalance) or ORA-15063 (Insufficient disks). 1. Initial Diagnostic Steps (ADRCI)

This query will help you identify exactly which health check failed and when it was executed.