The "1 new failure" wasn't a death sentence, but it required surgery. Leo had to:
To get the granular details, look at the . You can usually find this in your Oracle Base directory: $ORACLE_BASE/diag/asm/+asm/+asm1/trace/alert_+asm1.log
Log into the ASM instance using SQL*Plus as SYSASM to evaluate the structural integrity of your diskgroups:
The checker alerts administrators if read/write operations exceed predefined latency thresholds (typically over 20 milliseconds for sustained periods). asm health checker found 1 new failures
To minimize the likelihood of ASM health checker failures:
If you manage Oracle Grid Infrastructure (GI) or a standalone Automatic Storage Management (ASM) instance, one notification can send a chill down your spine:
Log into your BIG-IP management console. The "1 new failure" wasn't a death sentence,
Rare, but serious. Corruption in the file directory ( KFD ) or allocation tables can cause "stale metadata" errors. Often seen after abnormal cluster shutdowns.
If you are managing an Oracle database environment and receive the alert it’s time to pay attention. While Oracle Automatic Storage Management (ASM) is robust, this specific notification indicates that the internal diagnostic framework has detected an issue that could potentially impact disk group availability or performance.
Then restart the ASM instance or reload udev: To minimize the likelihood of ASM health checker
If dd fails with "Input/output error", the disk is physically failing.
It was 4:45 PM on a Friday. The office was thinning out, and Leo was already thinking about his weekend plans when his terminal began to scroll with red text. The monitoring system had just spat out a single, chilling line: ASM Health Checker found 1 new failures
Recent changes that haven't propagated correctly across a cluster.
When it prints found 1 new failures , it means a single, distinct event has degraded the cluster's idealized state. Common Root Causes Behind the Failure Alert
This will return a list of all health checks, like this sample output: | run_id | name | check_name | start_time | end_time | status | |---|---|---|---|---|---| | 361 | HM_RUN_361 | DB Structure Integrity Check | 2011-11-13 11:02:11 | 2011-11-13 11:02:19 | COMPLETED | This step helps you correlate the alert's timestamp with the corresponding health check run.
