i want BACKUP sql database from Administrato,, bud file when i save show this :

<br />
<b>Fatal error</b>: Allowed memory size of 8388608 bytes exhausted (tried to allocate 3491840 bytes) in <b>/srv1/www/servername/www/inc/functions.php</b> on line <b>301</b><br />


i look at this file , but not found this line