This message comes from Oracle ASM (Automatic Storage Management) , typically when you run:
SELECT group_number, name, path, state, failgroup, mode_status
FROM v$asm_disk
WHERE state != 'NORMAL';
However, the existence of the alert raises a philosophical question about the nature of modern system administration: the reliance on automation. The ASM Health Checker is an automated agent. It runs silently in the background, parsing logs and checking parameters. When it outputs this alert, it is effectively handing off responsibility. The system has detected a fault that it cannot resolve on its own. This moment defines the role of the modern DBA—not as a mere operator who restarts services, but as a diagnostician who must interpret the automated findings. asm health checker found 1 new failures updated
1. Disk Accessibility Issues (I/O Errors) The most common cause is a transient or permanent I/O failure on a specific disk within a Disk Group. If a disk is slow to respond, or if the underlying storage array reports a read/write error, ASM marks the disk as "offline" or flags the error. The "1 new failure" often refers to a specific disk in a failure group becoming inaccessible. What Does This Message Mean