Error
Error Code: ACFS-07095

Oracle Database Error ACFS-07095: Invalid Major Device Number

📦 Oracle Database
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Description

This error indicates that an ACFS character special file has been detected with an invalid major device number, specifically zero, where a positive value is expected. It typically occurs during ACFS resource operations (like startup, mount, or validation) when the underlying operating system device files are incorrectly configured or corrupted, preventing ACFS from properly interacting with the intended device.
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Error Message

CHARACTER special file has invalid major_device_number value
 found: 0, but expected to find: > 0
for file:
 string
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Known Causes

3 known causes
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Misconfigured Device File
The character special file (e.g., in /dev) associated with an ACFS resource has been incorrectly created or modified, resulting in an invalid major device number of zero.
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Missing or Corrupted Device Driver
The necessary kernel module or device driver for the underlying hardware is not loaded or is corrupted, preventing the operating system from assigning a valid major device number.
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Incorrect Manual Configuration
The device file was manually created or modified with an incorrect major device number, or an automated utility failed during its creation process.
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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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