Hi,

I'm trying to use mysqlbackup to backup a mariadb-10.5.19 database on fedora37 server using the following:

# mysqldump --verbose -u root -ppass --result-file=/var/backup/mysql-backup/backup-lsalex-2023-06-03-13008.sql lsalex

I usually use a more involved mysqlbackup command, but it also failed, so I figured it would be better to start out more simply as above. It fails with the following when restoring to a new, test database:

# mysql -u root -p lstest < /var/backup/mysql-backup/backup-lsalex-2023-06-03-13008.sql Enter password: ERROR 1005 (HY000) at line 12884: Can't create table `lsalex`.`xu6gc_tj_notification_user_exclusions` (errno: 150 "Foreign key constraint is incorrectly formed")

This is a backup/restore of a Joomla database. Am I using the wrong command to perform the backup or restore? This isn't a database that I created and I really have no idea how it works. I've also searched extensively for this error, and it appears to be a programming error, not a database error, but obviously I have no control over Joomla programming.

Here's what I found from "SHOW ENGINE INNODB STATUS":

LATEST FOREIGN KEY ERROR ------------------------ 2023-06-03 10:09:01 0x7f3a8d8516c0 Error in foreign key constraint of table `lstest`.`xu6gc_tj_notification_user_exclusions`: Create table `lstest`.`xu6gc_tj_notification_user_exclusions` with foreign key `xu6gc_tj_notification_user_exclusions_ibfk_1` constraint failed. Field type or character set for column 'provider' does not match referenced column 'provider'.------------

Here's the lines from the backup mentioned in the error message:

12884 CREATE TABLE `xu6gc_tj_notification_user_exclusions` ( 12885 `user_id` int(11) NOT NULL, 12886 `client` varchar(100) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL, 12887 `key` varchar(100) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL, 12888 `provider` varchar(100) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL, 12889 KEY `client1` (`client`,`provider`(50),`key`), 12890 KEY `key` (`key`), 12891 KEY `provider` (`provider`), 12892 CONSTRAINT `xu6gc_tj_notification_user_exclusions_ibfk_1` FOREIGN KEY (`provider`) REFERENCES `xu6gc_tj_notification_providers` (`provider`) 12893 ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_general_ci;

Any ideas are greatly appreciated.