Asm Health Checker Found 1 New Failures Updated ((link)) -

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

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.

Re-scans, OS reboots, or sector size changes ( ORA-15085 ) on the SAN break the shared storage layer. 📋 Comprehensive Troubleshooting Guide asm health checker found 1 new failures updated

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:

# Locate your ASM Alert log using the ADRCI tool adrci> show alert -p "message_text like '%ASM Health Checker%'" Use code with caution. 2. Verify Your Current Disk Group Status Slow response times from the storage subsystem cause

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

The disk group has dropped offline. This indicates a loss of disk quorum. 3. Check for Ongoing Rebalance Operations Re-scans, OS reboots, or sector size changes (

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

The disk group is normal; the issue might be confined to a single disk.

Too many offline disks in the PST disable the read quorum, triggering a forced dismount.