Asm Health Checker Found 1 New Failures May 2026

The message "ASM Health Checker found 1 new failures" is a critical alert in the Oracle Automatic Storage Management (ASM) alert log indicating that the internal Health Monitor has detected a significant operational issue. This failure often precedes or accompanies a diskgroup being forced to dismount or an instance entering a "dirty detach" state. Common Root Causes

: A disk group may have been forced to dismount due to lost connectivity or multiple disk failures in a failure group. Disk Header Corruption asm health checker found 1 new failures

Diskgroup Corruption: Metadata inconsistencies or corrupted blocks within a diskgroup can trigger health check failures. The message "ASM Health Checker found 1 new

Connectivity Issues: Loss of access to a voting file or a failure to refresh voting files on a specific diskgroup. One failure fixed

One failure found. One failure fixed. Back to sleep—until the next thread started to pull. deepen the technical details of the ASM failure, or should we pivot to a post-mortem report style for this story?

He dug deeper into the ASM logs. The health checker hadn't flagged a total crash; it had flagged a "Zombie Process" in the health-check script itself. A legacy script, written years ago by an engineer who had long since moved on, had timed out while trying to ping a decommissioned staging server.