Error
Error Code: ORA-28452

Oracle ORA-28452: Rolling Upgrade Failure

📦 Oracle Database
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Description

The ORA-28452 error occurs in Oracle Database during a rolling upgrade when attempting to execute the `ALTER DATABASE DICTIONARY` statement while large object (LOB) signature is enabled. This operation is restricted during rolling upgrades to maintain data consistency.
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Error Message

ORA-28452: ALTER DATABASE DICTIONARY statement is not allowed during rolling upgrade if LOB signature is enabled.
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Known Causes

3 known causes
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LOB Signature Enabled
The database is configured with large object (LOB) signature enabled, preventing dictionary modifications during the upgrade.
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Rolling Upgrade in Progress
A rolling upgrade process is currently active on the Oracle Database instance.
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Premature Dictionary Alteration
An attempt to modify the database dictionary was made before completing the necessary steps in the rolling upgrade procedure.
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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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