Error
Error Code: ACFS-07191

Oracle Database Error ACFS-07191: Duplicate Disk Offset Entries

📦 Oracle Database
📋

Description

This error indicates a critical inconsistency within the Oracle ACFS (ASM Cluster File System) metadata. It signifies that the internal `Map_File` structure, which maps file blocks to actual disk offsets, contains duplicate entries for a specific file. This usually points to file system corruption or an internal ACFS driver issue, preventing proper file access or system operation.
💬

Error Message

Map_File has duplicate entries for _ActualDiskOffset: string 
for file:
 string
🔍

Known Causes

4 known causes
⚠️
ACFS Metadata Corruption
Damage to the ACFS metadata can occur due to hardware failures, power outages, or other disk-related problems, leading to inconsistent `Map_File` entries.
⚠️
ACFS Software Defect
A bug in the Oracle ACFS driver or related software components might incorrectly update file system metadata, causing duplicate `_ActualDiskOffset` entries.
⚠️
Underlying Storage Issues
Problems with the physical storage or ASM diskgroups that host the ACFS file system can propagate as metadata inconsistencies within ACFS.
⚠️
Incomplete ACFS Operations
Unsuccessful or interrupted ACFS operations, such as resizing or snapshot management, can leave the file system metadata in an inconsistent state.
🛠️

Solutions

Coming Soon

Detailed step-by-step solutions for this error are being prepared. In the meantime, try these general troubleshooting tips:

General Troubleshooting Tips

  • Check the error message carefully for specific details
  • Review recent changes that might have caused the error
  • Search for the exact error code in the official documentation
  • Check log files for additional context
  • Try restarting the application or service

Find Help

Stack Overflow Google Search Official Docs