Error
Error Code: ORA-29853

Oracle ORA-29853: Unique Constraint Violation

📦 Oracle Database
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Description

The ORA-29853 error in Oracle Database occurs when attempting to create a domain index with the `UNIQUE` attribute. Domain indexes, which are application-specific indexes, do not support the `UNIQUE` constraint.
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Error Message

ORA-29853: keyword UNIQUE may not be used in creating domain indexes
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Known Causes

2 known causes
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UNIQUE Keyword Used
The `CREATE INDEX` statement for a domain index incorrectly includes the `UNIQUE` keyword, which is not permitted for this index type.
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Misunderstanding Index Types
The developer may have mistakenly believed that domain indexes support uniqueness constraints, similar to regular indexes.
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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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