Error
Error Code: ORA-28429

Oracle Error ORA-28429: Standby Datafile Encryption

📦 Oracle Database
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Description

The ORA-28429 error occurs in Oracle Database when attempting to encrypt or decrypt a data file on a standby database while it's open in read-only mode. This operation is not permitted on a read-only standby database because encryption/decryption requires write access.
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Error Message

ORA-28429: cannot encrypt or decrypt a data file on standby when it is open read-only
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Known Causes

2 known causes
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Read-Only Standby
The standby database instance is open in read-only mode, preventing any write operations like encryption or decryption.
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Incorrect Instance Mode
The operation was attempted while the standby instance was not in the required MOUNT mode.
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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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