Asm Health Checker Found 1 New Failures Updated Site

If one of the disks in a disk group is taken offline (due to a lost path, a multipath issue, or a silent I/O error) and the disk group’s redundancy level cannot be maintained, the health checker records a failure. In a NORMAL redundancy disk group, losing one failure group member often triggers the failure alert.

Disks in FAILED or OFFLINE state are probable culprits.

SELECT group_number, name, path, state, failgroup, mode_status FROM v$asm_disk WHERE state != 'NORMAL';

Once you have identified the source, choose the appropriate resolution path. Scenario A: Transient/Temporary Error (Safe Action)

Log into your ASM instance as SYSASM to run real-time health checks and view the status of your disk groups. Check Disk Group Status asm health checker found 1 new failures updated

By following these steps, you can troubleshoot and resolve ASM health checker failures, ensuring the stability and performance of your Oracle database and ASM environment.

SELECT name, state, type, total_mb, free_mb FROM v$asm_diskgroup;

Use alert -p "text like '%ORA-15%'" to view specific errors related to diskgroups, such as ORA-15063 or ORA-15196 . 2. Analyzing the Failure Source

If the failure indicates a physical disk failure ( STATE = 'OFFLINE' or MODE_STATUS = 'OFFLINE' ), you must replace it. ALTER DISKGROUP OFFLINE DISK ; Use code with caution. Replace the physical disk at the storage level. Online the disk (rebalance will occur automatically): ALTER DISKGROUP ONLINE DISK ; Use code with caution. Scenario C: Metadata Corruption (Critical Action) If one of the disks in a disk

Look for errors like ORA-15080 (synchronous I/O fail), ORA-15195 (disk group corruption), or messages referencing ASM health check failure . 1.2 Identify the Failing Component

If errors are found, you may need to:

If the health check report identifies a repairable problem—such as a minor metadata inconsistency—the safest first step is to attempt an automated repair. Use the REPAIR clause with the ALTER DISKGROUP command:

When you receive a notification that the "ASM health checker found 1 new failures updated," it means that the ASM health checker has detected a new issue with the ASM instance or one of its associated disks. The failure message is updated in the ASM alert log, indicating that a new problem has been identified. ORA-15195 (disk group corruption)

: A LUN or physical disk has become inaccessible due to storage network (SAN) or hardware failure.

If the underlying cause is a physical disk failure, you will need to identify and replace the failing disk. Use the following query to view the health of all disks in a disk group:

A temporary network glitch or storage array hiccup that caused an I/O to fail.