Error
Error Code: ORA-28435

Oracle Error ORA-28435: Datafile Decryption Failure

📦 Oracle Database
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Description

The ORA-28435 error occurs when Oracle attempts to decrypt a data file that wasn't encrypted using the database key. This typically happens if the data file belongs to a tablespace encrypted with a different key or was not encrypted using the correct methods.
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Error Message

ORA-28435: cannot decrypt data file string which is not encrypted with the database key
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Known Causes

3 known causes
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Incorrect Key Usage
The data file might be encrypted with a tablespace key different from the database key.
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Improper Encryption Method
The data file wasn't encrypted using `ALTER DATABASE DATAFILE ENCRYPT` or `ALTER TABLESPACE ENCRYPTION OFFLINE ENCRYPT`.
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Data File Corruption
There might be corruption within the data file, preventing successful decryption.
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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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