Question

How do I duplicate a MySQL database?

Asked by: webmonkey8

Hello, I have a web site connected to a MySql database.  I want to duplicate this web site so I copied the web site files to another location on my server.  That was no problem.  But things get complicated for me from here.  Since the site is connect to a MySQL database, how do I duplicate that?  Can anyone please tell me how to do this and please guide me step by step as I'm new to MySQL.  Thanks a lot.

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Asked On
2005-09-06 at 20:00:09ID21552779
Tags

duplicate

,

database

,

mysql

Topic

MySQL Server

Participating Experts
3
Points
250
Comments
3

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    Answers

     

    by: ravenplPosted on 2005-09-06 at 22:56:09ID: 14834211

    First You must think, if You need it to duplicate, maybe the programm should use shared db. But if not.

    create new database
    make dump of old database (backup)
    restore/import it to the new one.

    need help on howto? what access to the db You have (shell, phpmyadmin ...)?

     

    by: weighinggloryPosted on 2005-09-07 at 13:10:07ID: 14839758

    If you're going to be doing much work with MySQL, it's probably a good idea to go ahead and get PHPMyAdmin (http://www.phpmyadmin.net) installed on your server. This is an open-source web app that is focused on making administration of MySQL databases smooth and simple. It's really a fine program.

    Now, this program may very well be installed already on your server if you are using a hosting provider of some sort. I use Bluehost.com, for instance, which uses the cPanel interface for administering my site. There is a section in there for working with MySQL, with a link to PHPMyAdmin.

    Copying databases is a snap in PHPMyAdmin. Simply go to your old database, click Operations, and at the bottom of your screen there will be an option to copy the database. It sounds like you'll want to copy both structure and data.

    So I think this is your best option. If you don't have this software, but you do have a good control panel, then you can do what ravenpl suggests. Create a new database, and then export old database, and import into new one. There will be a convenient interface for this.

    Basically, you probably don't want to run a series of actual SQL commands yourself to do this. It is a pain. And these other interfaces are good and tested, and there's less risk of missing something in your copy.

     

    by: ppfoongPosted on 2005-09-08 at 04:08:00ID: 14843396


    If you want the duplicated website to share the same piece of database, so that any update to the database is reflected to both websites, then you just need to access the same mysql database from both websites. Locate the script for "mysql_connect" and modify the connection info accordingly.

    Before that, you have to make sure mysql allow TCP/IP connection, and has a user granted for the second website, in case it is on different server.

    Check /etc/my.cnf and make sure "skip-networking" is commented out. Run mysql and issue the command "GRANT ALL PRIVILEGES ON * . * TO 'root'@'ip.address.of.remote.server' ;".

    If both websites are in the same server, and you want the database to be independent of each other, then create another database in the same mysql server, copy over the data, and have the other website access the new database.

    In mysql, issue the command "CREATE DATABASE name-of-database;".

    Use phpMyAdmin to dump everything from the database to a sql text file. Edit the top most part of the file, add the line "USE name-of-database;", save it. Then run the command "mysql < filename.sql" to import it.

    If you have separate mysql server, the method is the same. You still need to create the database, dump from the existing one, import to the new database.

    If you want to have replication instead, go to google and search for "mysql replication tutorial", you can find plenty of them.


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