jtablesession::store failed i joomla

jtablesession::store failed
DB function failed with error number 1146

the above porblem had bang my head for almost 2 days. i have search and search and searching. here is simple solution.

Solution 1. Please delete empyt space the you might get in configuration.php for joomla. Please save in ANSI formate from notepad

Solution 2. Please check $dbprefix in configuration.php {file of your server.}