The one-line alert is just a header. Immediately examine the ASM alert log for surrounding messages.
A common scenario from Oracle user forums illustrates the practical resolution: asm health checker found 1 new failures updated
Wait for the recovery to complete (monitor via v$asm_operation ). Once done, the health checker will automatically clear the failure and log a corresponding "failure cleared" message. The one-line alert is just a header
Search for the exact timestamp of the health checker failure. Often, the log entry will also include a reference to the affected disk group or an ORA‑ error code (e.g., ORA‑15042, ORA‑15130). Once done, the health checker will automatically clear
For persistent issues, you may need to gather a diagnostic package using the Incident Packaging Service (IPS) and upload it to Oracle Support exact command
Use SQL to identify malfunctioning disks:
Match the redundancy of your disk groups to the importance of the data they store. Use HIGH redundancy for critical databases, NORMAL for most production workloads, and EXTERNAL only when you have hardware RAID protection.