To backup the MySQL database, first prepare the database by:
Obtaining a read lock on all tables in slee_db, and
Flushing all cached data to the database files.
After preparing the database, use one of the available MySQL backup scripts, such as mysqldump or mysqlhotcopy, to create an offline copy of the database. The exact tool and procedure you use depends on the type of database you have created (InnoDB, MyISAM, ISAM). See the MySQL Developer Zone to determine which backup utility and strategy best meets your needs.
You may also consider using the --log-bin option when starting MySQL to record database updates in a binary log file. The binary log acts as an incremental backup, and it can be applied to the a full database backup to restore the database to a more recent point in time."