Si en los backups de PLESK obtienes este ERROR:
WARNING: (mysql object ‘DATABASE’) Not all the data was backed up into /var/lib/psa/dumps/clients/CLIENT/domains/DOMAIN/databases/DATABASE_2_35 successfully. mysqldump: Got error: 23: Out of resources when opening file ‘./DATABASE/jos_qlue404_links.MYD’ (Errcode: 24) when using LOCK TABLES
Editamos el fichero /etc/my.cnf
y añadimos la linea:
[mysqld]
open_files_limit = 5000
Luego reniciamos el servicio de mysql:
service mysqld restart