![After upgrading to 15.0.7: MySQL is used as database but does not support 4-byte characters - 🚧 Installation - Nextcloud community After upgrading to 15.0.7: MySQL is used as database but does not support 4-byte characters - 🚧 Installation - Nextcloud community](https://help.nextcloud.com/uploads/default/original/2X/b/b486870acdde57c8fe2f209cc24d231d78b22844.png)
After upgrading to 15.0.7: MySQL is used as database but does not support 4-byte characters - 🚧 Installation - Nextcloud community
![After upgrading to 15.0.7: MySQL is used as database but does not support 4-byte characters - 🚧 Installation - Nextcloud community After upgrading to 15.0.7: MySQL is used as database but does not support 4-byte characters - 🚧 Installation - Nextcloud community](https://help.nextcloud.com/uploads/default/original/2X/f/f9e1636b100b0bd6e5e13ed5406049790012cc4c.png)
After upgrading to 15.0.7: MySQL is used as database but does not support 4-byte characters - 🚧 Installation - Nextcloud community
![InnoDB files created even innodb_file_per_table is OFF in mysql-5.7 - Database Administrators Stack Exchange InnoDB files created even innodb_file_per_table is OFF in mysql-5.7 - Database Administrators Stack Exchange](https://i.stack.imgur.com/X7UrX.jpg)
InnoDB files created even innodb_file_per_table is OFF in mysql-5.7 - Database Administrators Stack Exchange
![MOODLE 3.x: Warning: mysql_full_unicode_support The current setup of MySQL or MariaDB is using 'utf8'. This character set does not support four byte characters which include some emoji. MOODLE 3.x: Warning: mysql_full_unicode_support The current setup of MySQL or MariaDB is using 'utf8'. This character set does not support four byte characters which include some emoji.](https://uploads-ssl.webflow.com/623bc20a8d5c4a1ea516549f/6242699bb21bef00fb875b54_mysqld.png)
MOODLE 3.x: Warning: mysql_full_unicode_support The current setup of MySQL or MariaDB is using 'utf8'. This character set does not support four byte characters which include some emoji.
![MySQL Storage Engine Optimization: Configuring InnoDB Optimization For High Performance | Severalnines MySQL Storage Engine Optimization: Configuring InnoDB Optimization For High Performance | Severalnines](https://severalnines.com/wp-content/uploads/2022/05/6af648c4dababa365fdcb507ba2a00e1_14-1.jpg)