MediaWiki internal error.

Original exception: exception 'DBQueryError' with message 'A database error has occurred
Query: SELECT value,exptime FROM `objectcache` WHERE keyname='ooffice_wiki:messages:cs'
Function: MediaWikiBagOStuff::_doquery
Error: 144 Table './ooffice_wiki/objectcache' is marked as crashed and last (automatic?) repair failed (localhost)
' in /home/webs/openoffice.cz/wiki/web/w/includes/db/Database.php:606
Stack trace:
#0 /home/webs/openoffice.cz/wiki/web/w/includes/db/Database.php(561): Database->reportQueryError('Table './ooffic...', 144, 'SELECT value,ex...', 'MediaWikiBagOSt...', false)
#1 /home/webs/openoffice.cz/wiki/web/w/includes/BagOStuff.php(454): Database->query('SELECT value,ex...', 'MediaWikiBagOSt...')
#2 /home/webs/openoffice.cz/wiki/web/w/includes/BagOStuff.php(324): MediaWikiBagOStuff->_doquery('SELECT value,ex...')
#3 /home/webs/openoffice.cz/wiki/web/w/includes/BagOStuff.php(240): SqlBagOStuff->_query('SELECT value,ex...', 'ooffice_wiki:me...')
#4 /home/webs/openoffice.cz/wiki/web/w/includes/MessageCache.php(246): SqlBagOStuff->get('ooffice_wiki:me...')
#5 /home/webs/openoffice.cz/wiki/web/w/includes/MessageCache.php(606): MessageCache->load('cs')
#6 /home/webs/openoffice.cz/wiki/web/w/includes/MessageCache.php(543): MessageCache->getMsgFromNamespace('Whatlinkshere', 'cs')
#7 [internal function]: MessageCache->get('whatlinkshere', true, false)
#8 /home/webs/openoffice.cz/wiki/web/w/includes/StubObject.php(58): call_user_func_array(Array, Array)
#9 /home/webs/openoffice.cz/wiki/web/w/includes/StubObject.php(76): StubObject->_call('get', Array)
#10 /home/webs/openoffice.cz/wiki/web/w/includes/GlobalFunctions.php(467): StubObject->__call('get', Array)
#11 /home/webs/openoffice.cz/wiki/web/w/includes/GlobalFunctions.php(467): StubObject->get('whatlinkshere', true, false)
#12 /home/webs/openoffice.cz/wiki/web/w/includes/GlobalFunctions.php(432): wfMsgGetKey('whatlinkshere', true, false, true)
#13 /home/webs/openoffice.cz/wiki/web/w/includes/GlobalFunctions.php(338): wfMsgReal('whatlinkshere', Array, true)
#14 /home/webs/openoffice.cz/wiki/web/w/includes/SpecialPage.php(773): wfMsg('whatlinkshere')
#15 /home/webs/openoffice.cz/wiki/web/w/includes/SpecialPage.php(723): SpecialPage->getDescription()
#16 /home/webs/openoffice.cz/wiki/web/w/includes/SpecialPage.php(735): SpecialPage->setHeaders()
#17 /home/webs/openoffice.cz/wiki/web/w/includes/SpecialPage.php(534): SpecialPage->execute('MediaWiki:Books...')
#18 /home/webs/openoffice.cz/wiki/web/w/includes/Wiki.php(224): SpecialPage::executePath(Object(Title))
#19 /home/webs/openoffice.cz/wiki/web/w/includes/Wiki.php(55): MediaWiki->initializeSpecialCases(Object(Title), Object(OutputPage), Object(WebRequest))
#20 /home/webs/openoffice.cz/wiki/web/w/index.php(93): MediaWiki->initialize(Object(Title), NULL, Object(OutputPage), Object(User), Object(WebRequest))
#21 {main}

Exception caught inside exception handler: exception 'DBConnectionError' with message 'DB connection error: Unknown error (localhost)' in /home/webs/openoffice.cz/wiki/web/w/includes/db/Database.php:461
Stack trace:
#0 /home/webs/openoffice.cz/wiki/web/w/includes/db/LoadBalancer.php(686): Database->reportConnectionError('Unknown error (...')
#1 /home/webs/openoffice.cz/wiki/web/w/includes/db/LoadBalancer.php(453): LoadBalancer->reportConnectionError(Object(DatabaseMysql))
#2 /home/webs/openoffice.cz/wiki/web/w/includes/GlobalFunctions.php(2544): LoadBalancer->getConnection(-1, Array, false)
#3 /home/webs/openoffice.cz/wiki/web/w/includes/MessageCache.php(301): wfGetDB(-1)
#4 /home/webs/openoffice.cz/wiki/web/w/includes/MessageCache.php(264): MessageCache->loadFromDB('cs')
#5 /home/webs/openoffice.cz/wiki/web/w/includes/MessageCache.php(606): MessageCache->load('cs')
#6 /home/webs/openoffice.cz/wiki/web/w/includes/MessageCache.php(543): MessageCache->getMsgFromNamespace('Databaseerror', 'cs')
#7 /home/webs/openoffice.cz/wiki/web/w/includes/GlobalFunctions.php(467): MessageCache->get('databaseerror', true, false)
#8 /home/webs/openoffice.cz/wiki/web/w/includes/GlobalFunctions.php(432): wfMsgGetKey('databaseerror', true, false, true)
#9 /home/webs/openoffice.cz/wiki/web/w/includes/Exception.php(70): wfMsgReal('databaseerror', Array)
#10 /home/webs/openoffice.cz/wiki/web/w/includes/db/Database.php(2565): MWException->msg('databaseerror', 'Database error')
#11 /home/webs/openoffice.cz/wiki/web/w/includes/Exception.php(139): DBQueryError->getPageTitle()
#12 /home/webs/openoffice.cz/wiki/web/w/includes/Exception.php(174): MWException->reportHTML()
#13 /home/webs/openoffice.cz/wiki/web/w/includes/Exception.php(260): MWException->report()
#14 /home/webs/openoffice.cz/wiki/web/w/includes/Exception.php(294): wfReportException(Object(DBQueryError))
#15 [internal function]: wfExceptionHandler(Object(DBQueryError))
#16 {main}