The ASM Health Checker is a tool that periodically checks the health of your ASM storage environment. It looks for potential issues that could affect database availability and performance.
Once you have fixed the underlying physical or logical issue, the Health Checker should automatically update during its next run. However, if the status remains "Failed" in the views, you can manually trigger a re-run of the health check or use ADRCI to purge the alert. Summary Checklist
: In diskgroups with redundancy (Normal or High), if too many disks or a required "voting" disk (PST) become unavailable, the group cannot maintain a read quorum and will fail.
While the "1 new failure" could technically be anything, it usually falls into one of these three categories: A. Disk Corruption or Metadata Inconsistency asm health checker found 1 new failures
Here is a story of a "typical" Friday night in the life of a Database Administrator (DBA) facing this error. The Friday Night Ghost in the Machine
: A disk group may have been forced to dismount due to lost connectivity or multiple disk failures in a failure group. Disk Header Corruption
DECLARE v_fid NUMBER; BEGIN SELECT failure_id INTO v_fid FROM v$asm_health_check WHERE status='FAIL' AND rownum=1; DBMS_SCHEDULER.SET_ATTRIBUTE('SYS.ASM_HEALTH_CHECK_JOB','COMMENTS','Manually cleared'); EXECUTE IMMEDIATE 'BEGIN SYS.ASM_HEALTH_CHECK_PURGE('||v_fid||'); END;'; END; / The ASM Health Checker is a tool that
• Failure: TLS certificate expiry < 7 days • Component: asm-gateway • First seen: 2026-04-12 10:15 UTC • Severity: HIGH • Previous status: pass → current: fail
Set up alerts on v$asm_health_check itself:
SELECT run_id, name, check_name, start_time, end_time, status FROM v$hm_run ORDER BY run_id DESC; However, if the status remains "Failed" in the
asmcmd checkset -g DATA
The message "ASM Health Checker found 1 new failures" is a proactive alert generated by a background health monitoring process. This Health Checker is like a doctor for your database or system, routinely examining internal components for signs of illness—in this case, corruption, inconsistencies, or failures.