Error
Error Code: ORA-29917

Oracle ORA-29917: Collection Lock Error

📦 Oracle Database
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Description

The ORA-29917 error occurs in Oracle Database when attempting to explicitly lock a table that derives its rows from a collection operand. Oracle does not allow direct locking of tables whose data is dynamically generated from collections.
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Error Message

cannot lock a table which gets its rows from a collection operand
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Known Causes

3 known causes
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Direct Table Lock Attempt
An attempt was made to use the `LOCK TABLE` statement on a table based on a collection.
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Implicit Lock by DML
A DML operation (e.g., `UPDATE`, `DELETE`) implicitly tries to lock a table derived from a collection.
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Incorrect Query Design
The query structure relies on locking an un-lockable collection-derived table.
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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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