To prevent ASM health checker issues, follow these best practices:
Always ensure your critical disk groups are at least on "Normal" redundancy to allow the health checker to find and fix issues without taking the database offline.
A temporary network glitch or storage array hiccup that caused an I/O to fail. asm health checker found 1 new failures updated
Proactive monitoring—via scheduled health checks, OEM metric alerts, and third‑party tools—ensures that you catch these failures early, often before they impact database availability. In the event of a genuine corruption that cannot be repaired, a robust backup and recovery strategy (including RMAN block recovery) will be your ultimate safeguard.
If the health checker finds a mismatch in the v$asm_check_failure metadata, the might be necessary, or in severe cases, using ASMCMD to mend the metadata. Try to rebalance: ALTER DISKGROUP REBALANCE POWER ; Use code with caution. To prevent ASM health checker issues, follow these
You can locate the ASM alert log in the following directory:
SQL> SELECT group_number, disk_number, name, state, path FROM V$ASM_DISK WHERE state != 'NORMAL'; In the event of a genuine corruption that
Configure OEM to send email or SNMP traps whenever the Checker Failure Detected metric changes to a non‑zero value.