Error
Error Code: ACFS-07172

Oracle Database Error ACFS-07172: ACFS Metadata Corruption

📦 Oracle Database
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Description

This error signifies that the Oracle ASM Cluster File System (ACFS) has detected inconsistencies in the metadata for a specific file's extents. It means the recorded file extent information (offset, length, physical disk offset) does not match what the system expects or is physically present, often indicating corruption within the ACFS volume.
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Error Message

file has incorrect values for Extent[ number ] 
 found: _FileOffset: string _Length: string _PhysicalDiskOffset: string 
, but expected to find: _FileOffset: string _Length: string _PhysicalDiskOffset: string 
for file:
 string
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Known Causes

4 known causes
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Underlying Storage Corruption
Problems with the physical disk or storage array can corrupt the ACFS metadata, leading to incorrect extent information.
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Improper System Shutdown
Unexpected power failures or system crashes can prevent ACFS from properly flushing and updating its metadata, causing inconsistencies.
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ACFS Internal Corruption
Rarely, an internal bug within the ACFS software itself or logical corruption of its control structures can lead to incorrect extent values.
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OS or Driver Instability
Issues with the operating system kernel or storage drivers can cause ACFS to write or read incorrect metadata, resulting in extent mismatches.
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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

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