Web A and Web B are located in the same server which using ISPConfig panel, I want to copy web A's database to web B, I can backup web A's datebase via ISPConfig, but how to resume the database in web B?
Create a new database for web B in ISPConfig. then use phpmyadmin to copy the content of database a to database b.
You can also do this on the command line: http://www.howtoforge.com/faq/6_3_en.html http://www.howtoforge.com/faq/6_4_en.html