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How do I backup or transfer my database?

mySQL databases are not backed up like ordinary files. Even if it were possible, it would not be a good solution, as it could corrupt the database by doing so.

To back up your database, ssh to your account, then use the mysqldump command:

mysqldump -ppassword DatabaseName > db.sql

('db.sql' is the name of your backup dump file, which you can change to whatever name you choose)

That backs up the whole database in standard SQL text format. Both the structure (like CREATE table command) and data (like INSERT command) statements, can be backed up separately, which is usefull in many cases. Check:

mysqldump --help

for all the command line options.

To restore the dump, just type:

mysql -p dbname < db.sql

Note that the structure dump won't work if tables already exist. The backup will not change or replace the structure.

For the data dump (the INSERT commands) it will append any new data if it does not yet exist.

If you have a database that is in frequent use, such as one linked to a dynamic web interface being updated by your web site visitors, it is a good idea to make a daily backup of the data.

To transfer a database, create the dump as described above, use ftp to upload it on the second server, and then restore it as above.

Backing up the database is not done through an ftp database directly. You first need to generate an sql dump, and then download this dump.

Use the following mysqldump command:

mysqldump -ppassword username > somefile.sql

Then use the following command to view the dump:

view somefile.sql

(exit with: q!)

To put the file back:

* upload the file
* edit it with a text editor, adding the below line to the top:
use databasename (which is the same as your username)
* save the file and issue the command:
mysql -ppasswd < somefile.sql

edit:
Information Source http://www.he.net/faq/mysql.html#Anchor1020

If you still need help, or need a php script that does the job, pm me.