1 New Failures Updated !exclusive! — Asm Health Checker Found

: A LUN or physical disk has become inaccessible due to storage network (SAN) or hardware failure.

Search for keywords like ORA- , ASM , or ERROR around the timestamp of the health checker alert. 3. ASM Instance Alert Log

Run these commands in your terminal to pinpoint the exact failure source. asm health checker found 1 new failures updated

When the ASM Health Checker reports a "new failure," it means that a scheduled or on-demand audit has detected a condition that violates Oracle's best practices or indicates a hardware/software fault. The "updated" status indicates that the health check repository has been refreshed with this latest finding. Common Causes for ASM Failures

If a disk group was previously dismounted or had an unclean dismount (e.g., due to a system crash or hardware failure), it can lead to inconsistencies that trigger health check failures. Metadata might not be fully synchronized across all disks, leading to checksum validation failures when the health checker runs. : A LUN or physical disk has become

Do not panic. A "new failure" is an alert, not necessarily a catastrophe. Follow these steps to determine the severity: 1.1 Check the Alert Log

ASMCMD [+] > chkdg --repair data

When the ASM health checker finds issues, it logs them in the ASM alert log, typically located in /diag/asm/+asm/+ASM /trace .

: ASM relies heavily on an internal MySQL database. Check for database corruption or space issues by running tmsh load sys config verify or reviewing /var/log/asm for SQL-related errors. Utilize iHealth Diagnostics : Generate a file and upload it to the F5 iHealth portal ASM Instance Alert Log Run these commands in

The is an internal mechanism, part of the ASM Instance , that continuously monitors the integrity of the disk groups, disk headers, and metadata structures. It acts as a preventative tool, alerting administrators to issues before they become full-blown outages, such as data corruption or disk group dismounting.

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