Database

What DBMS use for this VBulletin MilanMania forum, it is SQL Server 2K or what?

By the way, sometimes this message came when I do post or open thread:

Fatal error: Allowed memory size of 8388608 bytes exhausted (tried to allocate 3 bytes) in /home/httpd/vhosts/milanmania.com/httpdocs/forums/includes/functions_showthread.php(719) : eval()'d code on line 182

Fatal error: Allowed memory size of 8388608 bytes exhausted (tried to allocate 15 bytes) in Unknown on line 0

What's this?

Thanks