If you get the following error while managing a domain in parallels plesk control panel
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0: /usr/local/psa/admin/plib/dns/DNSZone.php:49
DNSZone->DNSZone(string ‘1′)
1: /usr/local/psa/admin/plib/common_func.php3:2875
objectMaker(string ‘DNSZone’, string ‘1′)
2: /usr/local/psa/admin/plib/dns/DNSManager.php:39
DNSManager::getDNSZone(string ‘1′)
3: /usr/local/psa/admin/plib/dns/DNSManager.php:75
DNSManager::getDefaultDNSZone()
4: /usr/local/psa/admin/plib/dns/DNSManager.php:104
DNSManager::syncDNSZoneAdminEmail(string ‘plesk@white.nl’, string ‘plesk2@white.nl’)
5: /usr/local/psa/admin/htdocs/server/admin_ed.php3:88
admin_ed(array, array, array)
6: /usr/local/psa/admin/htdocs/server/admin_ed.php3:171
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chances are that you have manually removed some entry from the psa database
Please insert the following into the psa database dns_zone table
mysql -uadmin -p`cat [...]

mysqlhotcopy is a perl script that can backup mysql databases using the MyISAM engines(InnoDb is not supported!) in a faster and efficient way
Following is a simple script to backup all your database to a directory (Preferably this directory should be in a hard drive different from your mysql databases so that there is no data [...]