Error
Error Code: ACFS-07179

Oracle Database Error ACFS-07179: Incorrect ACFS File Extent Value

📦 Oracle Database
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Description

This error indicates a critical inconsistency within the Oracle Automatic Storage Management Cluster File System (ACFS) metadata, specifically concerning the `_NextFreeExtent` value. It signifies that the internal tracking of free space within a file is corrupt or miscalculated, preventing proper file operations. This usually points to data integrity issues within the ACFS volume.
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Error Message

file has incorrect _NextFreeExtent value
 found: number , but expected to find: number 
for file:
 string
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Known Causes

3 known causes
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ACFS Metadata Corruption
File system metadata, including free extent information, can become corrupted due to underlying hardware failures, storage array issues, or bit rot.
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Abrupt System Shutdown
An unexpected power loss, operating system crash, or forced termination of ACFS processes during write operations can leave metadata in an inconsistent state.
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ACFS Software Bug
In rare cases, a bug within the ACFS software itself or conflicts with specific kernel modules could lead to incorrect extent calculations and metadata errors.
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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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