| Area | Requirement | |-------|--------------| | Performance | Comparison must complete in < 100ms | | State persistence | Store previous health state (e.g., Redis, SQLite, S3) | | Idempotency | Rerunning same check should not trigger duplicate alerts | | Configurability | Ability to ignore certain failure types from “new failure” detection |
F5 ASM Health Checker Found 1 New Failures: A Troubleshooting Guide
This command performs a comprehensive, read-only analysis of the disk group's consistency and reports any findings in the alert.log file. Executing this command confirmed the initial alert in a real-world case, validating that a genuine inconsistency existed. asm health checker found 1 new failures
. This message indicates that a failure has been logged in the Automatic Storage Management (ASM) health check framework, often related to disk group dismounts, header corruption, or voting file issues. Oracle ASM Health Check Failure Report Report Field Description / Details Alert Message ASM Health Checker found 1 new failures System Component Oracle Automatic Storage Management (ASM) Detection Source ASM Alert Log (typically located at diag/asm/+asm/ /trace/alert_+asm.log Incident Status
When this failure hits your system, prioritize stabilization and diagnostic isolation to avoid database downtime. This message indicates that a failure has been
Search for the keyword error , fail , or the specific secret Amazon Resource Name (ARN).
is a critical alert in Oracle Automatic Storage Management (ASM). It typically appears in the ASM alert log when the background health monitoring process detects a problem that could threaten disk group availability. Immediate Impact is a critical alert in Oracle Automatic Storage
Alternatively, use the CLI to check the logs: grep "health_checker" /var/log/asm Step 2: Common Failure Scenarios and Fixes 1. Database Table Crashes
SET LONG 100000 SET LONGCHUNKSIZE 1000 SELECT DBMS_HM.GET_RUN_REPORT('HM_RUN_1061') FROM DUAL;
SQL> select run_id, name, check_name, start_time, end_time, status from v$hm_run;
The response to this finding must be methodical, not panicked. The first step is triage: querying V$ASM_DISK and V$ASM_OPERATION to identify the exact nature of the failure. Is the disk marked FORCED or FAILED ? Has an offline disk exceeded DISK_REPAIR_TIME ? Often, the new failure is a “stale” disk that failed to resync after a transient outage. The solution might be as simple as an ALTER DISKGROUP ... ONLINE DISK command. Other times, the failure points to degraded hardware—a flaky SAS cable, a failing SSD, or a misconfigured multipath. In these cases, the DBA shifts from technician to detective, correlating the ASM alert with OS logs ( dmesg , syslog ) and storage array warnings. The one failure demands a root cause analysis before it metastasizes into a cascade.