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Subject:
ASM Health Check Report – New Failures Detected
: A single disk path has become unavailable, even if the disk is still accessible via a redundant path. Disk Group Redundancy
Pro Tip:
Regularly monitor your v$asm_operation view. If you see long-running "REBAL" (rebalance) operations following a failure, ensure your ASM_POWER_LIMIT is set high enough to complete the recovery quickly without impacting database I/O.
Part 2: Common Root Causes
Fix the Underlying Cause
:
- Validate current configuration versus source-of-truth.
- Reapply configuration from the trusted source.
- Run any integrity or schema checks.
This message indicates that the ASM health checker has detected a single failure in the storage system. The failure could be related to various issues, such as: