Asm Health Checker Found 1 New Failures Updated [upd] 【8K × HD】
Automatic Storage Management (ASM) is a vital component of Oracle databases, responsible for managing storage resources and providing a layer of abstraction between the database and the underlying storage devices. The ASM health checker is a built-in tool that monitors the health and performance of ASM instances, alerting administrators to potential issues before they become critical problems.
ASM> ALTER SYSTEM CHECK HEALTH;
The health checker is part of Oracle's framework. Health Monitor checks examine various layers and components of the database, detecting file corruptions, physical and logical block corruptions, undo and redo corruptions, data dictionary corruptions, and more. Beginning with Oracle Database 11g, this framework has enabled DBAs and automated processes to run diagnostic checks. By default, the database runs health checks on a regular basis, and during the course of these executions, any detected failures are logged to the alert log. asm health checker found 1 new failures updated
: Log into SQL*Plus as SYSASM and run SELECT name, state, type, total_mb, free_mb FROM v$asm_diskgroup; to find offline disks. Step 2: Common Root Causes
command to validate that all disks are present and have the correct header status. Examine Cluster Health : Ensure that the Oracle Grid Infrastructure is running correctly across all nodes using crsctl check crs Automatic Storage Management (ASM) is a vital component
Search for keywords like ORA- , ASM , or ERROR around the timestamp of the health checker alert. 3. ASM Instance Alert Log
The ominous log line indicates that the Oracle Automatic Storage Management (ASM) background monitoring system has detected an active problem within your storage tier. This alert is immediately appended to the ASM alert log ( alert_+ASM.log ). It often surfaces alongside an explicit storage operation disruption, such as a diskgroup forced dismount or a hardware-level I/O failure. Health Monitor checks examine various layers and components
Run the following SQL query within the SQL*Plus environment of the affected ASM instance to identify the disk group's operational mode:
When a DBA sees "ASM Health Checker found 1 new failures updated," the response must be methodical. Panic is the enemy; the alert is a tool, not an accusation. The administrator must query the V$ASM_HEALTH view or check the alert logs to pinpoint the specific component that triggered the failure. Was it a rebalance operation that failed? Is a disk currently offline? Is there a quorum failure in a clustered environment? The alert is the starting gun for a forensic investigation.
