Asm Health Checker Found 1 New: Failures [updated]

Fix the underlying hardware, multipathing (MADP, PowerPath), or permission issues at the OS level. Once the OS sees the disk again, online it in ASM: ALTER DISKGROUP ONLINE DISK ; Use code with caution. Scenario B: Disk Space Exhaustion (Corrupted or Full)

Here is a deep dive into what this error means, how to diagnose it, and the steps to resolve it. 1. Understanding the ASM Health Checker

SUCCESS: ALTER DISKGROUP... followed by immediate GMON dumping or failure notes.

The error message indicates that the Oracle Automatic Storage Management (ASM) instance has detected a critical hardware or software problem, most commonly resulting in an unplanned disk eviction or forced diskgroup dismount . When this alert triggers in your ASM alert log, it usually means ASM can no longer read from or write to one or more physical storage devices. Immediate action is required to prevent a full Cluster Ready Services (CRS) crash or database downtime. What Causes the ASM Health Checker Failure? asm health checker found 1 new failures

Log into your ASM instance via SQL*Plus as SYSASM to assess the cluster-wide operational health of your storage:

In environments like F5 BIG-IP ASM, failures often stem from disk space limits in the /var partition or database table row limits. Immediate Diagnostic Steps

Addressing this alert promptly ensures cluster stability and prevents potential database downtime. Understanding the ASM Health Checker The error message indicates that the Oracle Automatic

"ASM health checker found 1 new failure"

The "failure" wasn't a system collapse—it was the system getting confused by its own shadow.

To avoid future failures and ensure the health of your ASM infrastructure, follow these best practices: cagefs-7.6.31-1 ) or update your software.

# Locate the ASM alert log using ADRCI adrci adrci> set home +asm adrci> show alert -tail 100 Use code with caution.

Sometimes, the alert is triggered not by a real failure but by a bug. For example, users of CloudLinux with CageFS enabled reported false-positive health check warnings on cPanel v134 and newer. In this case, the solution was to wait for a patch (e.g., cagefs-7.6.31-1 ) or update your software.