Error
Error Code:
1420
MariaDB Error 1420: Prepared Statement Cursor Conflict
Description
This error signifies an attempt to re-execute a prepared SQL statement that still has an active, open cursor associated with a previous execution. MariaDB prohibits re-execution until the statement is explicitly reset, closing any associated cursors and releasing resources. It commonly arises in application logic that manages database interactions without proper statement lifecycle handling.
Error Message
You can't execute a prepared statement which has an open cursor associated with it. Reset the statement to re-execute it.
Known Causes
3 known causesMissing Statement Reset
The application attempts to re-execute a prepared statement without calling a reset function (e.g., `mysqli_stmt_reset()` in PHP) after its last execution.
Unclosed or Unexhausted Cursor
A previous execution of the prepared statement opened a cursor (e.g., for fetching results), and this cursor was not explicitly closed or fully exhausted before the next execution attempt.
Improper Statement Lifecycle Management
The application's logic does not correctly manage the lifecycle of prepared statements, leading to re-execution attempts on statements still holding resources from prior operations.
Solutions
Coming SoonDetailed 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