Error
Error Code: ORA-29957

Oracle ORA-29957: String Indexing Issue

📦 Oracle Database
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Description

The ORA-29957 error occurs in Oracle Database when you attempt to create a function-based domain index on a table column with a string datatype. This type of indexing is not supported for string columns in Oracle.
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Error Message

ORA-29957: cannot create a function-based domain index on a string table
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Known Causes

3 known causes
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Unsupported Datatype
The target column for the index is of a string datatype (e.g., VARCHAR2, CLOB), which is incompatible with function-based domain indexes.
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Incorrect Indexing Approach
The chosen indexing method (function-based domain index) is not suitable for the type of data being indexed.
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Misunderstanding of Indexing Capabilities
The user may have incorrectly assumed that function-based domain indexes can be created on any column type.
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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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