Notice: Error writing file '/tmp/MYjFiKPA' (Errcode: 28) in /home/vnnet/public_html/

Hi
I got a very strange problem with my poll script ( php ). It just happen 2 day ago . When that scrpt run , i got this message :

Notice: Error writing file '/tmp/MYjFiKPA' (Errcode: 28) in /home/vnnet/public_html/includes/database.php on line 184

And i notice that when this script runing a /tmp increase to 100% full . And it going to normal (6% ) when that script stop .
what should i do now ? Do i need to remount a /tmp folder ? My /tmp is 495MB . But my database is 800MB . Does it make problem ?

 

 

 

 

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