LOAD DATA INFILE Error Code 13: Why Can\'t MySQL Access My File?

LOAD DATA INFILE Error Code: 13 - A Technical Walkthrough

This article aims to provide a comprehensive solution to the MySQL error code 13, which occurs when attempting to load data from a file using the LOAD DATA INFILE statement.

Understanding the Error

Error Code 13 indicates that MySQL is unable to acquire file statistics for the specified file. In the provided query, MySQL is attempting to load data from the file '/httpdocs/.../.../testFile.csv' but encountering an issue.

Troubleshooting and Resolution

a. Check User Privileges

Ensure that the database user has sufficient privileges to access both the file and the database table. In this case, the user 'userName' has been granted all privileges on '.' and 'userName_%', which should suffice.

b. File and Folder Permissions

Verify that the file and folder containing the file have the correct permissions. The provided permissions of '777' (rwxrwxrwx) indicate that all users have read, write, and execute permissions, which should be sufficient.

c. AppArmor Interference (Ubuntu)

If the operating system is Ubuntu, the AppArmor application may be interfering with MySQL's access to the file. To resolve this:

• Edit the AppArmor configuration file (/etc/apparmor.d/usr.sbin.mysqld) and add the line '/tmp/** rwk' to grant MySQL read, write, and execute permissions to the /tmp directory.
• Reload AppArmor with the command 'sudo /etc/init.d/apparmor reload'.

Additional Tips

• Ensure that the file path specified in the query is accurate and that the file exists in the specified location.
• Check the file format and ensure that it aligns with the import definition in the LOAD DATA INFILE statement.
• Verify that the table structure matches the format of the data in the file.

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