MediaWiki internal error.

Original exception: exception 'DBQueryError' with message 'A database error has occurred
Query: SELECT page_title,old_text,old_flags FROM `page`,`revision`,`text` WHERE page_is_redirect = '0' AND page_namespace = '8' AND (page_title not like '%%/%%') AND (page_latest=rev_id) AND (rev_text_id=old_id) AND (page_len <= 10000)
Function: MessageCache::loadFromDB
Error: 1146 Table 'mw_sb.text' doesn't exist (localhost)
' in /data/www/mediawiki-trunk/includes/db/Database.php:606
Stack trace:
#0 /data/www/mediawiki-trunk/includes/db/Database.php(561): Database->reportQueryError('Table 'mw_sb.te...', 1146, 'SELECT page_ti...', 'MessageCache::l...', false)
#1 /data/www/mediawiki-trunk/includes/db/Database.php(969): Database->query('SELECT page_ti...', 'MessageCache::l...')
#2 /data/www/mediawiki-trunk/includes/MessageCache.php(343): Database->select(Array, Array, Array, 'MessageCache::l...')
#3 /data/www/mediawiki-trunk/includes/MessageCache.php(264): MessageCache->loadFromDB('en')
#4 /data/www/mediawiki-trunk/includes/MessageCache.php(606): MessageCache->load('en')
#5 /data/www/mediawiki-trunk/includes/MessageCache.php(543): MessageCache->getMsgFromNamespace('Group-user', 'en')
#6 /data/www/mediawiki-trunk/includes/GlobalFunctions.php(467): MessageCache->get('group-user', true, false)
#7 /data/www/mediawiki-trunk/includes/GlobalFunctions.php(432): wfMsgGetKey('group-user', true, false, true)
#8 /data/www/mediawiki-trunk/includes/GlobalFunctions.php(338): wfMsgReal('group-user', Array, true)
#9 /data/www/mediawiki-trunk/includes/User.php(2781): wfMsg('group-user')
#10 /data/www/mediawiki-trunk/includes/Title.php(1287): User::getGroupName('user')
#11 /data/www/mediawiki-trunk/includes/Title.php(1048): Title->getUserPermissionsErrorsInternal('edit', Object(User), false)
#12 /data/www/mediawiki-trunk/includes/Title.php(1020): Title->userCan('edit', false)
#13 /data/www/mediawiki-trunk/includes/parser/ParserCache.php(32): Title->quickUserCan('edit')
#14 /data/www/mediawiki-trunk/includes/parser/ParserCache.php(45): ParserCache->getKey(Object(Article), Object(User))
#15 /data/www/mediawiki-trunk/includes/Article.php(742): ParserCache->getETag(Object(Article), Object(User))
#16 /data/www/mediawiki-trunk/includes/Wiki.php(437): Article->view()
#17 /data/www/mediawiki-trunk/includes/Wiki.php(59): MediaWiki->performAction(Object(OutputPage), Object(Article), Object(Title), Object(User), Object(WebRequest))
#18 /data/www/mediawiki-trunk/index.php(93): MediaWiki->initialize(Object(Title), Object(Article), Object(OutputPage), Object(User), Object(WebRequest))
#19 {main}

Exception caught inside exception handler: exception 'DBUnexpectedError' with message 'Error in fetchObject(): Table 'mw_sb.text' doesn't exist (localhost)' in /data/www/mediawiki-trunk/includes/db/Database.php:735
Stack trace:
#0 /data/www/mediawiki-trunk/includes/MessageCache.php(345): Database->fetchObject(false)
#1 /data/www/mediawiki-trunk/includes/MessageCache.php(264): MessageCache->loadFromDB('en')
#2 /data/www/mediawiki-trunk/includes/MessageCache.php(606): MessageCache->load('en')
#3 /data/www/mediawiki-trunk/includes/MessageCache.php(543): MessageCache->getMsgFromNamespace('Databaseerror', 'en')
#4 /data/www/mediawiki-trunk/includes/GlobalFunctions.php(467): MessageCache->get('databaseerror', true, false)
#5 /data/www/mediawiki-trunk/includes/GlobalFunctions.php(432): wfMsgGetKey('databaseerror', true, false, true)
#6 /data/www/mediawiki-trunk/includes/Exception.php(70): wfMsgReal('databaseerror', Array)
#7 /data/www/mediawiki-trunk/includes/db/Database.php(2565): MWException->msg('databaseerror', 'Database error')
#8 /data/www/mediawiki-trunk/includes/Exception.php(139): DBQueryError->getPageTitle()
#9 /data/www/mediawiki-trunk/includes/Exception.php(174): MWException->reportHTML()
#10 /data/www/mediawiki-trunk/includes/Exception.php(260): MWException->report()
#11 /data/www/mediawiki-trunk/includes/Exception.php(294): wfReportException(Object(DBQueryError))
#12 [internal function]: wfExceptionHandler(Object(DBQueryError))
#13 {main}