請教關於前後台網站目前均顯示下列，該如何處理?謝謝
jtablesession::store failed
DB function failed with error number 145
Table '.\joomla15\jos_session' is marked as crashed and should be repaired SQL=INSERT INTO `jos_session` ( `session_id`,`time`,`username`,`gid`,`guest`,`client_id` ) VALUES ( '19161f8dce47705e9eb7cda8cb3975bc','1363165213','','0','1','1' )
Fatal error: Allowed memory size of 25165824 bytes exhausted (tried to allocate 32 bytes) in C:\AppServ\www\joomla15\libraries\joomla\error\exception.php on line 117