If the ASM manages authentication sessions, a background process responsible for token revocation or cleanup may have stalled.
-- 1. Identify the recent health checks SET LINESIZE 200 PAGESIZE 100 COLUMN name FORMAT a20 COLUMN check_name FORMAT a30 COLUMN start_time FORMAT a30 COLUMN end_time FORMAT a30 SELECT run_id, name, check_name, TO_CHAR(start_time, 'YYYY-MM-DD HH24:MI:SS') AS start_time, TO_CHAR(end_time, 'YYYY-MM-DD HH24:MI:SS') AS end_time, status FROM v$hm_run WHERE check_name LIKE '%ASM%' OR name LIKE 'HM_RUN_%' ORDER BY start_time DESC;
The ASM Health Checker is part of the Oracle Check Framework. It runs periodic checks on the ASM instance, disk groups, and metadata to ensure everything is operating within healthy parameters.
Monitors input/output (I/O) latency and connection drops between nodes.
(Requires immediate investigation to prevent data loss or service disruption) Potential Causes & Findings Disk Group Dismount
Verify the status of the voting disks:%%MAGIT_PARSER_PROTECT%% bash crsctl query css votedisk %%MAGIT_PARSER_PROTECT%%
If the failure is related to "Insufficient Space," rebalance the disk group or add new disks immediately.
The Automatic Storage Management (ASM) health check utility has identified during the most recent diagnostic scan. This report outlines the nature of the failure, its potential impact, and recommended actions.
This command will provide more detailed information about the failure.
Next, check the status of your ASM disk groups and individual disks.
In the vast, humming data centers that underpin modern enterprise computing, silence is golden. For a Database Administrator (DBA) or a systems engineer overseeing an Oracle Automatic Storage Management (ASM) environment, a clean health check report is that coveted silence. It signifies order, redundancy, and stability. But when the command line returns the terse, ominous message——that silence shatters. A single new failure is rarely just a number; it is a narrative. It is a whisper of potential downtime, a clue in a forensic puzzle, and a test of operational resilience.
This final check ensures the inconsistency has been fully resolved and the disk group is now in a consistent state. The absence of new failure messages in the alert.log confirms a successful resolution.
The error message indicates that the Oracle Automatic Storage Management (ASM) instance has detected a critical hardware or software problem, most commonly resulting in an unplanned disk eviction or forced diskgroup dismount . When this alert triggers in your ASM alert log, it usually means ASM can no longer read from or write to one or more physical storage devices. Immediate action is required to prevent a full Cluster Ready Services (CRS) crash or database downtime. What Causes the ASM Health Checker Failure?
The ASM Health Checker runs automatically and reports any issues or failures it detects. The checker runs at regular intervals, which can be configured using the ASM_CHECK_INTERVAL parameter.
This command checks and attempts to repair the found corruption, which typically resolves the alert.
If the ASM manages authentication sessions, a background process responsible for token revocation or cleanup may have stalled.
-- 1. Identify the recent health checks SET LINESIZE 200 PAGESIZE 100 COLUMN name FORMAT a20 COLUMN check_name FORMAT a30 COLUMN start_time FORMAT a30 COLUMN end_time FORMAT a30 SELECT run_id, name, check_name, TO_CHAR(start_time, 'YYYY-MM-DD HH24:MI:SS') AS start_time, TO_CHAR(end_time, 'YYYY-MM-DD HH24:MI:SS') AS end_time, status FROM v$hm_run WHERE check_name LIKE '%ASM%' OR name LIKE 'HM_RUN_%' ORDER BY start_time DESC;
The ASM Health Checker is part of the Oracle Check Framework. It runs periodic checks on the ASM instance, disk groups, and metadata to ensure everything is operating within healthy parameters.
Monitors input/output (I/O) latency and connection drops between nodes. asm health checker found 1 new failures
(Requires immediate investigation to prevent data loss or service disruption) Potential Causes & Findings Disk Group Dismount
Verify the status of the voting disks:%%MAGIT_PARSER_PROTECT%% bash crsctl query css votedisk %%MAGIT_PARSER_PROTECT%%
If the failure is related to "Insufficient Space," rebalance the disk group or add new disks immediately. If the ASM manages authentication sessions, a background
The Automatic Storage Management (ASM) health check utility has identified during the most recent diagnostic scan. This report outlines the nature of the failure, its potential impact, and recommended actions.
This command will provide more detailed information about the failure.
Next, check the status of your ASM disk groups and individual disks. It runs periodic checks on the ASM instance,
In the vast, humming data centers that underpin modern enterprise computing, silence is golden. For a Database Administrator (DBA) or a systems engineer overseeing an Oracle Automatic Storage Management (ASM) environment, a clean health check report is that coveted silence. It signifies order, redundancy, and stability. But when the command line returns the terse, ominous message——that silence shatters. A single new failure is rarely just a number; it is a narrative. It is a whisper of potential downtime, a clue in a forensic puzzle, and a test of operational resilience.
This final check ensures the inconsistency has been fully resolved and the disk group is now in a consistent state. The absence of new failure messages in the alert.log confirms a successful resolution.
The error message indicates that the Oracle Automatic Storage Management (ASM) instance has detected a critical hardware or software problem, most commonly resulting in an unplanned disk eviction or forced diskgroup dismount . When this alert triggers in your ASM alert log, it usually means ASM can no longer read from or write to one or more physical storage devices. Immediate action is required to prevent a full Cluster Ready Services (CRS) crash or database downtime. What Causes the ASM Health Checker Failure?
The ASM Health Checker runs automatically and reports any issues or failures it detects. The checker runs at regular intervals, which can be configured using the ASM_CHECK_INTERVAL parameter.
This command checks and attempts to repair the found corruption, which typically resolves the alert.