I would highly advise against using a php script (PHPMyAdmin, the UBB, etc) to create an SQL dump; especially with a large (over 100mb) database (as it will time out or in extreme cases not give you a complete database dump).

Instead, by using SSH (commands provided above) one can create the dump from the MySQL service directly (and it will be created MUCH faster).

I am a Web Development Contractor, I do not work for UBBCentral. I have provided free User to User Support since the beginning of these support forums.
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