Asm Health Checker Found 1 New Failures Updated

Once you have identified the alert log, follow these steps to gather essential diagnostic information:

When the ASM health checker reports "1 new failures updated," it means that the checker has detected a new issue that requires attention. This message indicates that:

Occasionally, a backup or restore operation (RMAN) can write corrupted blocks, or a storage array can return “stale” data. The health checker detects these blocks as persistent failures, even if the database layer is not yet reporting user‑visible errors.

: A physical disk or LUN becomes inaccessible, or a write error occurs that ASM cannot recover from through mirroring. asm health checker found 1 new failures updated

SQL> ALTER DISKGROUP <disk_group_name> CHECK ALL REPAIR;

tail -100 $ORACLE_BASE/diag/asm/+asm/+ASM1/trace/alert_+ASM1.log

user wants a detailed article about the ASM Health Checker notification "found 1 new failures updated". This requires explaining what ASM Health Checker is, the meaning of the notification, common causes, troubleshooting steps, and its role in wider monitoring. I will follow the search plan, opening the initial result to understand ASM Health Checker basics, then performing the specified searches. initial open of the Oracle documentation failed. The search results provided some useful links. The search for "ASM Health Checker found 1 new failures updated" yielded a potentially relevant result. The search for the meaning of "1 new failures" also yielded a potentially relevant result. The search for ASM Health Checker failure disk group status yielded a potentially relevant result. The search for V$ASM_HEALTH_CHECKER view Oracle did not yield a specific view. The search for best practices and monitoring alerts yielded some relevant results. The search for documentation site:oracle.com yielded some results. I will now open the most promising links. opened links provide useful information. The techdatabasket article gives a practical example. The CSDN article provides details on checker failure detection. The FlashGrid page lists ASM disk group checks. The Oracle documentation is a reference manual. The AHF release notes mention ASM disk group status. The Cleverence article explains Oracle Health Monitor. The Veritas page mentions ASMInst agent health check monitoring. The BMC page describes ASM alert log. The Oracle PDFs provide information on viewing checker findings. I have enough information to draft an article. The user's request is to "write a long article". I will structure the article with an introduction, explanation of the health checker, common causes, step-by-step troubleshooting, and prevention tips. monitoring a production Oracle Database—especially in a Real Application Clusters (RAC) environment—alert logs can contain many different messages. Among the most important ones for an Automatic Storage Management (ASM) administrator is: "ASM Health Checker found 1 new failures updated" Once you have identified the alert log, follow

(e.g., ORA-15xxx) is shown in the alert log? What is the output of SELECT * FROM v$asm_check_failure; ?

Operational impacts

ALTER DISKGROUP <disk group name> CHECK ALL REPAIR; : A physical disk or LUN becomes inaccessible,

After restoration, re-run the ASM health check to confirm the issue has been resolved.

: Specific block corruption within a disk group. Step-by-Step Response Plan 1. Analyze the Alert Log

-- Query the location of the alert log SELECT value FROM v$parameter WHERE name = 'background_dump_dest'; Use code with caution.

SELECT path, disk_number, header_status, state, mount_status FROM v$asm_disk WHERE group_number = (SELECT group_number FROM v$asm_diskgroup WHERE name = 'YOUR_DISKGROUP'); Use code with caution. 4. Verify Physical Connectivity (OS Level)