Asm Health Checker Found 1 New Failures Updated Jun 2026

SELECT group_number, name, state, type FROM v$asm_diskgroup; SELECT path, header_status, mode_status, state FROM v$asm_disk; Use code with caution.

Do not guess the cause of the failure. Oracle logs the exact root cause across several diagnostic files. Check these locations first: 1. TFA and Autonomous Health Framework (AHF)

After a server reboot, the underlying Linux kernel may assign different raw device major/minor paths (like /dev/dm-* ) to your LUNs. If your ASM_DISKSTRING targets raw paths instead of persistent udev or ASMLib aliases, ASM loses track of its disks. 📋 Comprehensive Troubleshooting Workflow asm health checker found 1 new failures updated

Understanding the ASM Health Checker Warning The message is a critical alert generated by the Oracle Automatic Storage Management Cluster File System (ACFS) or Oracle Grid Infrastructure health framework.

This message comes from , typically when you run: Check these locations first: 1

-- Query the location of the alert log SELECT value FROM v$parameter WHERE name = 'background_dump_dest'; Use code with caution.

The most common cause. If an ASM disk becomes inaccessible due to: free_mb FROM v$asm_diskgroup

SELECT group_number, name, state, type, total_mb, free_mb FROM v$asm_diskgroup; Use code with caution.

Once the issue is addressed (e.g., path restored or disk replaced), run a check to clear the health checker error: ALTER DISKGROUP your_diskgroup CHECK ALL; Use code with caution. Best Practices and Prevention

You can locate the ASM alert log in the following directory: