Error
Error Code: ACFS-07094

Oracle Database Error ACFS-07094: Invalid Snapshot Metadata

📦 Oracle Database
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Description

This error indicates an inconsistency or corruption in the internal snapshot metadata (`_SnapMetaIncarnationNumber`) associated with a specific file within an Oracle ACFS filesystem. It typically occurs when ACFS snapshot information becomes out of sync or damaged, preventing proper file access or snapshot operations.
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Error Message

file has invalid _SnapMetaIncarnationNumber value
 found: number maximum: number 
for file:
 string
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Known Causes

4 known causes
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ACFS Metadata Corruption
Underlying corruption within the ACFS filesystem metadata can lead to invalid `_SnapMetaIncarnationNumber` values for files.
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Improper Snapshot Operations
Incomplete, interrupted, or incorrect snapshot creation, deletion, or restoration processes can leave metadata in an inconsistent state.
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Software Bugs or Version Mismatches
Bugs in the ACFS software or compatibility issues between different ACFS or Oracle Grid Infrastructure versions can sometimes cause metadata inconsistencies.
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Underlying Storage Issues
Problems at the storage layer, such as disk failures or I/O errors, can corrupt ACFS metadata during write operations.
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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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