: If the disk group is still mounted, manually trigger a metadata check: SQL> ALTER DISKGROUP CHECK ALL;

The Oracle Automatic Storage Management (ASM) health checker is a critical diagnostic tool designed to automatically detect issues with diskgroup consistency, redundancy, and I/O performance. Receiving the alert "ASM Health Checker Found 1 New Failures Updated" indicates that the checker has identified a potential issue with a disk, diskgroup, or metadata.

The message is a critical alert typically logged in the Oracle ASM alert log when the Automatic Storage Management (ASM) instance detects an issue that threatens the integrity or availability of a disk group . Typical Causes

ALTER DISKGROUP <diskgroup_name> ONLINE DISK <disk_name>;

This alert is generated by the ASM health check background process. Unlike a hard crash, which stops operations immediately, this alert suggests a "soft failure" or a predictive failure that requires diagnosis before it escalates into data loss or downtime.

Remember: a healthy ASM instance is the bedrock of a healthy Oracle database. Treat the ASM Health Checker as your most vigilant storage guardian.

: Inspect the ASM instance alert log (usually found in the Automatic Diagnostic Repository or ) for specific error codes like (disk full) or (disk group mount failure). Verify Disk Status asmcmd lsdsk

The Health Monitor stores detailed information about its checks in several database views. The primary ones are:

Based on real‑world case studies and Oracle diagnostic reports, the “found 1 new failures” alert is most frequently caused by:

One user reported a scenario where a disk originally from one ASM disk group was accidentally added to a new disk group, leading to corruption and the "ASM Health Checker found 1 new failures" message appearing in the logs.

Configuring BIG-IP ASM system resource alerts using ... - My F5

SQL> select run_id, name, check_name, start_time, end_time, status from v$hm_run;

Log into your ASM instance via SQL*Plus ( sqlplus / as sysasm ) and run the following to see the status of your disks: