ББ
MariaDB> USE INFORMATION_SCHEMA;
MariaDB> SELECT CONCAT("ALTER TABLE
", TABLE_SCHEMA,"
.", TABLE_NAME, "
ROW_FORMAT=DYNAMIC;") AS MySQLCMD FROM TABLES WHERE TABLE_SCHEMA = "nextcloud";This will return an SQL command for each table in the nextcloud database. The rows can be quickly copied into a text editor, the “|”s replaced and the SQL commands copied back to the MariaDB shell. If no error appeared (in doubt check step 2) all is done and nothing is left to do here. It can be proceded with the MySQL instructions from step 3 onwards.