I don't use PhpMyAdmin for dumps and restores.
I log into my server to open up a shell to my server.
To Dump
Code:
/usr/bin/mysqldump -u'DATABASENAME' -p'DATABASEPASSORD' --opt 'DATABASENAME' > /PATHTO
DUMP
To Restore
Code:
mysql -u 'DATABASENAME' -p 'DATABASENAME' < /PATHTODUMP