Need help for restoring my backup.tar.gz to new server

i am trying to restore my database as i have changed my server company, the size of my sql database is aroung 3 gb, can you please help how do i restore the database , i tried it with the common method of extracting the tar.gz file and then uploading the My sql file (around 3gb) under cpanel sql in restore backup option but it takes a very very long time and drops in between before completing as it used crome to upload the database(i guess) , i tried this method various times but was unable to restore the database to my new server, is there any software which can be used to restore large sized database , or is there any software to restore my backuped zipped file backup.tar.gz(around 600 MB) which includes all the databases .
thanks in advance for early reply.