Error
Error Code: ORA-30052

ORA-30052: Invalid Snapshot Expression

📦 Oracle Database
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Description

The ORA-30052 error indicates that the provided lower limit snapshot expression is invalid because it falls below the configured `UNDO_RETENTION` parameter in your Oracle Database. This typically occurs during operations involving flashback query or related features where a snapshot time is specified.
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Error Message

ORA-30052: invalid lower limit snapshot expression
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Known Causes

3 known causes
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Retention Limit Exceeded
The specified snapshot expression is older than the database's `UNDO_RETENTION` parameter, making the requested undo data unavailable. ⚠
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Incorrect Timestamp Format
The snapshot expression may be using an incorrect date or timestamp format, causing the database to misinterpret the requested time. 💻
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UNDO Tablespace Issues
Insufficient space or corruption within the UNDO tablespace can prevent the database from accessing the required undo data, even if the snapshot expression is technically within the retention period. ⚙
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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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