SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('337605af02573630b3cc1c5674729379','0','54.205.160.82','CCBot/2.0 (http://commoncrawl.org/faq/)','1397738348','thread.php?threadid=645','0','0','')
mysql error: The table 'bb1_sessions' is full
mysql error number: 1114
mysql version: 5.5.33-cll-lve
php version: 5.3.27
Date: 17.04.2014 @ 14:39
Script: /forum/thread.php?threadid=645
Referer: