Why Am I Getting a \'Unknown Character Set: \'utf8mb4\'\' Error During MySQL Import?

UTF8MB4 Character Set Error in MySQL Import

When attempting to restore a MySQL dump using the command line, an "ERROR 1115 (42000): Unknown character set: 'utf8mb4'" error may occur. This error indicates that the specified character set is not supported by the current MySQL installation.

The provided dump contains the following lines, which set the character set and collation:

/*!50003 SET character_set_client  = utf8mb4 */ ;
/*!50003 SET character_set_results = utf8mb4 */ ;
/*!50003 SET collation_connection  = utf8mb4_general_ci */ ;

To resolve this error, consider the following:

MySQL Version Compatibility

The utf8mb4 character set was introduced in MySQL version 5.5.3. If your installation is a lower version, such as 5.1.69, it does not support this character set. Upgrade your MySQL instance to a version that supports utf8mb4.

Manual Character Set Conversion

If upgrading MySQL is not feasible, you can attempt to convert the dump manually. However, this may require access to the original database and deep knowledge of character set conversion techniques.

Removing Character Set Settings

As a last resort, you can remove the character set settings from the dump file, but this could result in data corruption if the dumped database used different character sets. Proceed with caution and backup the original dump before making any changes.

Remember, character set compatibility is crucial for ensuring data integrity during database operations. Consult MySQL documentation and seek professional assistance if necessary to handle character set issues effectively.

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