1 New Failures Updated [better] — Asm Health Checker Found

Run the following SQL query within the SQL*Plus environment of the affected ASM instance to identify the disk group's operational mode:

Instant Fix for Oracle ASM Disk Failures When this error appears in the ASM alert log, it is usually preceded by underlying I/O dropouts or timeout warnings. This requires immediate DBA intervention to prevent data loss or complete cluster eviction. 🛠️ Root Causes of the ASM Failure Alert asm health checker found 1 new failures updated

The disk group has dropped offline. This indicates a loss of disk quorum. 3. Check for Ongoing Rebalance Operations Run the following SQL query within the SQL*Plus

Before making any changes, retrieve the trace file that corresponds to the background error. Look for lines right above the alert in your ASM alert log to identify the specific RBAL or GMON background trace file. This indicates a loss of disk quorum

Intermittent loss of connectivity to the SAN/LUNs causes heartbeat timeout warnings (e.g., Waited 15 secs for write IO ).

The Oracle Automatic Storage Management (ASM) Health Checker periodically polls the storage environment's overall health. Below are the most common scenarios that trigger this alert:

Slow response times from the storage subsystem cause the Oracle ASM instance to drop the impacted disks.