Asm Health Checker Found 1 New Failures Updated Access

The ASM Health Checker is an internal diagnostic tool embedded within Oracle ASM (introduced in Oracle 11g Release 2 and enhanced in 12c, 18c, 19c, and 21c). Its primary function is to periodically validate the integrity, accessibility, and configuration of ASM disk groups and their underlying disks.

Unlike manual health checks (such as ALTER DISKGROUP ... CHECK), the ASM Health Checker runs automatically in the background. It monitors critical metrics including:

When the checker detects a new anomaly that was not present in its previous scan, it increments a failure count and writes the message: "ASM Health Checker found [X] new failures updated" to the ASM alert log.

SELECT group_number, name, path, state, failgroup, mode_status 
FROM v$asm_disk 
WHERE state != 'NORMAL';

ASM has internal I/O timers. If a disk consistently fails to respond within a threshold (e.g., _asm_io_timeout), the health checker marks it as a slow or hanging I/O resource.

The message "ASM Health Checker found 1 new failures updated" is not a death knell for your database. Instead, it is an early warning system that Oracle ASM has detected a single, specific anomaly in your storage infrastructure. By methodically examining the ASM alert log, querying the dynamic performance views, and investigating the OS/storage layer, you can quickly identify whether the issue is a transient path failure, an offline disk, or a more serious metadata corruption.

Remember: One new failure means you have time to react, but you should react immediately. Ignoring the alert can lead to a cascade of failures, especially in lower redundancy configurations. With the diagnostic steps and remediation strategies provided in this guide, you can confidently resolve the alert and restore your ASM environment to full health.

Stay proactive, monitor your disk groups regularly, and your ASM health checker will reward you with silence—the best alert of all.

Keywords used: ASM Health Checker found 1 new failures updated, ASM alert log, Oracle ASM troubleshooting, disk group failure, v$asm_diskgroup, offline disks, ASM metadata corruption, multipath failure, Oracle RAC health check.

ASM Health Checker Found 1 New Failures Updated: What It Means and How to Resolve It

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.

If you've received a notification that the "ASM health checker found 1 new failures updated," it's essential to understand what this message means and take prompt action to resolve the issue. In this article, we'll delve into the details of ASM health checking, explore the possible causes of this error, and provide step-by-step guidance on how to troubleshoot and fix the problem.

Understanding ASM Health Checking

The ASM health checker is a continuous monitoring process that checks the health and performance of ASM instances. It collects data on various aspects of ASM operations, including:

The health checker uses this data to identify potential issues, such as disk failures, performance bottlenecks, or configuration problems. When an issue is detected, the health checker updates the ASM alert log with a failure message, indicating the type and severity of the problem. asm health checker found 1 new failures updated

What Does "ASM Health Checker Found 1 New Failures Updated" Mean?

When you receive a notification that the "ASM health checker found 1 new failures updated," it means that the ASM health checker has detected a new issue with the ASM instance or one of its associated disks. The failure message is updated in the ASM alert log, indicating that a new problem has been identified.

The failure message may indicate a variety of issues, including:

Causes of ASM Health Checker Failures

There are several possible causes for ASM health checker failures, including:

How to Troubleshoot and Resolve ASM Health Checker Failures

To troubleshoot and resolve ASM health checker failures, follow these steps:

Step-by-Step Troubleshooting Guide

Here's a more detailed, step-by-step guide to troubleshooting ASM health checker failures:

Step 1: Check the ASM Alert Log

Step 2: Verify ASM Disk Status

Step 3: Investigate Disk Performance

Step 4: Review ASM Configuration

Step 5: Check Database and Storage Connections

Resolving ASM Health Checker Failures

Once you've identified the root cause of the ASM health checker failure, take corrective action to resolve the issue. This may involve:

By following these steps, you can troubleshoot and resolve ASM health checker failures, ensuring the stability and performance of your Oracle database and ASM environment.

Conclusion

The "ASM health checker found 1 new failures updated" message indicates a potential issue with the ASM instance or one of its associated disks. By understanding the causes of ASM health checker failures and following a step-by-step troubleshooting guide, you can identify and resolve issues before they become critical problems. Regular monitoring and maintenance of ASM instances and disks can help prevent health checker failures and ensure optimal performance and stability of your Oracle database and storage environment.

The message "ASM Health Checker found 1 new failures" typically appears in the Oracle Automatic Storage Management (ASM) alert log when a critical issue—such as a disk failure or a forced diskgroup dismount—is detected. This is part of Oracle's fault diagnosability infrastructure designed to capture diagnostic data at the first sign of trouble. Immediate Actions to Take

If you see this message, follow these steps to identify and resolve the failure:

Check the ASM Alert Log: Review the alert log (often located in /u01/app/grid/diag/asm/+asm/+ASM/trace/alert_+ASM.log) for errors preceding the health checker message, such as ORA-15130 (diskgroup being dismounted) or ORA-15032.

Run ADRCI: Use the ADR Command Interpreter (ADRCI) to view the specific "incident" or "problem" that was logged. Command: adrci> show problem or adrci> show incident

Verify Diskgroup Status: Log into the ASM instance and check if any diskgroups are offline or if disks have been dropped. SQL> select name, state from v$asm_diskgroup;

SQL> select name, header_status, mode_status from v$asm_disk;

Investigate I/O Failures: Look for hardware-level issues, such as storage path failures, SAN/NFS connectivity problems, or OS-level permission changes that might have caused the disk to go offline. Common Causes The ASM Health Checker is an internal diagnostic

Disk Path Failure: The OS can no longer see the physical storage device.

Forced Dismount: ASM may force a dismount if too many disks in a failure group are lost, exceeding the redundancy limit.

Communication Issues: In a RAC environment, network or heartbeat failures between nodes can trigger ASM health alerts.

For automated assistance, you can use tools like Oracle ORAchk to run a comprehensive health check on your entire Oracle stack.

This specific notification usually indicates that an automated tool—like the Oracle Autonomous Health Framework (AHF) F5 BIG-IP ASM —has detected a change in your system's health status.

Depending on where you want to share this (e.g., Slack for your team, or a technical status update), here are a few options: Option 1: Internal Team Alert (Slack/Teams) ASM Alert: New Failure Detected The ASM Health Checker has just reported 1 new failure Next Steps: Checking the and running tfactl diagcollect to grab the latest logs for investigation.

Will update the thread once the root cause is identified. 🛠️ Option 2: Professional Technical Update System Health Notification: ASM Health Checker

A new failure was identified during the latest ASM health check scan. Current Action Plan: incidents to identify the specific failure. Verifying disk group redundancy and member disk status. Running a manual health check via Oracle AHF/ORAchk to confirm if the issue is persistent.

Monitoring for any impact on performance or disk availability. Option 3: Short & Direct ASM Health Checker Update: 1 new failure found. ⚠️ Currently investigating the ASM alert log

and running diagnostics. No immediate impact reported yet, but staying on top of it. #DBA #ASM #OracleHealth Quick Troubleshooting Tips Oracle ASM: Automatic Diagnostic Repository Command Interpreter (ADRCI) to view details on the new incident. F5 BIG-IP ASM: MySQL database health if you suspect a sync or configuration issue. Always check the

first; it is the most reliable source for the specific error code (like ) causing the failure.

Which environment are you running this in? I can tailor the post if it's for a specific platform like Oracle Cloud K14194: Troubleshooting the BIG-IP ASM MySQL database