Error
Error Code: ORA-28459

Oracle ORA-28459: Tablespace Encryption Denied

📦 Oracle Database
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Description

This error occurs when attempting to encrypt an unencrypted tablespace while the `TABLESPACE_ENCRYPTION` parameter is set to `DECRYPT_ONLY`. This setting restricts the database instance to only decrypting tablespaces, preventing new encryption operations.
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Error Message

ORA-28459: cannot encrypt the unencrypted tablespace: string when TABLESPACE_ENCRYPTION is set to DECRYPT_ONLY.
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Known Causes

3 known causes
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Incorrect Encryption Mode
The `TABLESPACE_ENCRYPTION` parameter is configured to `DECRYPT_ONLY`, disallowing encryption operations.
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Accidental Configuration Change
The `TABLESPACE_ENCRYPTION` parameter was inadvertently changed, preventing encryption.
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Misunderstanding Encryption Settings
The user attempted to encrypt a tablespace without realizing the current encryption restrictions.
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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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