Asm Health Checker Found 1 New Failures

The first rule of any IT crisis is to check the logs. The alert message itself is a symptom; the log file contains the diagnosis.

Schedule routine CHECK ALL executions during off-peak maintenance windows to uncover hidden media corruptions early.

: A single disk path has become unavailable, even if the disk is still accessible via a redundant path. Disk Group Redundancy

If your health checker runs inside a private VPC subnet, it cannot access the public AWS Secrets Manager endpoint without proper routing. asm health checker found 1 new failures

Use the ASM Metadata Core Utility ( AMDU ) to print and inspect the corrupted blocks. If the disk group has redundancy, force a manual rebalance to reconstruct the corrupted data from surviving mirrors: ALTER DISKGROUP REBALANCE POWER 5; Use code with caution. 3. I/O Performance Degradation (Slow Disks)

The checker alerts administrators if read/write operations exceed predefined latency thresholds (typically over 20 milliseconds for sustained periods).

: SELECT name, path, mount_status, header_status, state FROM v$asm_disk; The first rule of any IT crisis is to check the logs

The diagram below outlines the sequential steps to take from the moment you see the alert log message.

When ASM writes this specific line to the alert log, it is almost always responding to a severe breakdown in the underlying I/O subsystem. The most common triggers include: KB88485 - My Oracle Support

Loss of physical fiber channel paths, faulty host bus adapters (HBAs), or incorrect multipathing layers ( multipathd ) will drop the physical storage paths. ASM detects this loss of communication as a failed disk heartbeat. 3. Disk Header Mutilation : A single disk path has become unavailable,

If your disk group uses (requiring 2 or 3 failure groups) or High Redundancy (requiring 5) and an entire array goes offline, ASM will flag the failure. It does this because your storage is now running exposed without proper protection. Step-by-Step Diagnostic and Resolution Workflow

Go to the console and select the problematic secret. Scroll down to the Rotation configuration section.

Database Integrity: Issues with the MySQL backend where policies are stored.