MySQL · December 20, 2023

How to Fix MySQL Error 2050 - (CR_FETCH_CANCELED) Row retrieval was canceled by mysql_stmt_close() call

How to Fix MySQL Error 2050 - (CR_FETCH_CANCELED) Row retrieval was canceled by mysql_stmt_close() call

MySQL is a popular open-source relational database management system used by many websites and applications. However, like any software, it can encounter errors that can disrupt its normal operation. One such error is MySQL Error 2050, also known as CR_FETCH_CANCELED, which occurs when row retrieval is canceled by a mysql_stmt_close() call. In this article, we will explore the causes of this error and provide solutions to fix it.

Causes of MySQL Error 2050

MySQL Error 2050 occurs when the retrieval of rows from a result set is canceled by a mysql_stmt_close() call. This error can be caused by various factors, including:

  • Incorrect use of mysql_stmt_close(): If the mysql_stmt_close() function is called before all rows are fetched from the result set, it can lead to the CR_FETCH_CANCELED error.
  • Network issues: Unstable network connections or timeouts can cause the mysql_stmt_close() call to cancel row retrieval.
  • Insufficient resources: If the server running MySQL does not have enough resources to handle the retrieval of rows, the mysql_stmt_close() call may cancel the operation.

Fixing MySQL Error 2050

Here are some solutions to fix MySQL Error 2050:

1. Check your code

Review your code and ensure that the mysql_stmt_close() function is called only after all rows have been fetched from the result set. If you are using a loop to fetch rows, make sure the loop completes before calling mysql_stmt_close().

// Example code
$stmt = mysqli_prepare($connection, "SELECT * FROM table");
mysqli_stmt_execute($stmt);
mysqli_stmt_store_result($stmt);

while (mysqli_stmt_fetch($stmt)) {
    // Process each row
}

mysqli_stmt_close($stmt); // Call mysql_stmt_close() after all rows have been fetched

2. Optimize your network connection

If network issues are causing the error, optimize your network connection to ensure stability. Check for any network interruptions, increase timeouts if necessary, and consider using a more reliable network connection.

3. Increase server resources

If the server running MySQL does not have enough resources to handle row retrieval, consider increasing the resources allocated to MySQL. This can include increasing memory, CPU, or disk space to ensure smooth operation.

Summary

MySQL Error 2050, or CR_FETCH_CANCELED, occurs when row retrieval is canceled by a mysql_stmt_close() call. This error can be caused by incorrect use of mysql_stmt_close(), network issues, or insufficient server resources. To fix this error, review your code to ensure mysql_stmt_close() is called after all rows have been fetched, optimize your network connection, and increase server resources if necessary.

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