Asm Health Checker Found 1 New Failures Updated [SAFE]
Too many offline disks in the PST disable the read quorum, triggering a forced dismount.
Run the following SQL query within the SQL*Plus environment of the affected ASM instance to identify the disk group's operational mode:
When your ASM instance registers a failure, use this sequence of administrative tasks to evaluate and fix the problem. 1. Locate the Relevant Trace Files asm health checker found 1 new failures updated
A manual or automatic rebalance may clear the problem if the disk group maintains redundancy. Check the background work status:
Re-scans, OS reboots, or sector size changes ( ORA-15085 ) on the SAN break the shared storage layer. 📋 Comprehensive Troubleshooting Guide Too many offline disks in the PST disable
The disk group is normal; the issue might be confined to a single disk.
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 the Relevant Trace Files A manual or
Intermittent loss of connectivity to the SAN/LUNs causes heartbeat timeout warnings (e.g., Waited 15 secs for write IO ).
