MediaWiki internal error.<br />
<br />
Original exception: exception 'DBConnectionError' with message 'DB connection error: Unknown error (formationnmercur.mysql.db)' in /home/formationn/www/mercurewiki/includes/db/Database.php:626<br />
Stack trace:<br />
#0 /home/formationn/www/mercurewiki/includes/db/LoadBalancer.php(679): DatabaseBase-&gt;reportConnectionError('Unknown error (...')<br />
#1 /home/formationn/www/mercurewiki/includes/db/LoadBalancer.php(452): LoadBalancer-&gt;reportConnectionError(Object(DatabaseMysql))<br />
#2 /home/formationn/www/mercurewiki/includes/BagOStuff.php(254): LoadBalancer-&gt;getConnection(-2)<br />
#3 /home/formationn/www/mercurewiki/includes/BagOStuff.php(265): SqlBagOStuff-&gt;getDB()<br />
#4 /home/formationn/www/mercurewiki/includes/MessageCache.php(252): SqlBagOStuff-&gt;get('formationnmercu...')<br />
#5 /home/formationn/www/mercurewiki/includes/MessageCache.php(606): MessageCache-&gt;load('fr')<br />
#6 /home/formationn/www/mercurewiki/includes/MessageCache.php(545): MessageCache-&gt;getMsgFromNamespace('Userlogin', 'fr')<br />
#7 /home/formationn/www/mercurewiki/includes/GlobalFunctions.php(781): MessageCache-&gt;get('userlogin', true, false)<br />
#8 /home/formationn/www/mercurewiki/includes/GlobalFunctions.php(744): wfMsgGetKey('userlogin', true, false, true)<br />
#9 /home/formationn/www/mercurewiki/includes/GlobalFunctions.php(644): wfMsgReal('userlogin', Array, true)<br />
#10 /home/formationn/www/mercurewiki/includes/SpecialPage.php(891): wfMsg('userlogin')<br />
#11 /home/formationn/www/mercurewiki/includes/SpecialPage.php(830): SpecialPage-&gt;getDescription()<br />
#12 /home/formationn/www/mercurewiki/includes/SpecialPage.php(842): SpecialPage-&gt;setHeaders()<br />
#13 /home/formationn/www/mercurewiki/includes/SpecialPage.php(578): SpecialPage-&gt;execute(NULL)<br />
#14 /home/formationn/www/mercurewiki/includes/Wiki.php(262): SpecialPage::executePath(Object(Title))<br />
#15 /home/formationn/www/mercurewiki/includes/Wiki.php(63): MediaWiki-&gt;handleSpecialCases(Object(Title), Object(OutputPage), Object(WebRequest))<br />
#16 /home/formationn/www/mercurewiki/index.php(114): MediaWiki-&gt;performRequestForTitle(Object(Title), NULL, Object(OutputPage), Object(User), Object(WebRequest))<br />
#17 /home/formationn/www/mercurewiki/index.php5(1): require('/home/formation...')<br />
#18 {main}<br />
<br />
Exception caught inside exception handler: exception 'DBQueryError' with message 'A database error has occurred.  Did you forget to run maintenance/update.php after upgrading?  See: http://www.mediawiki.org/wiki/Manual:Upgrading#Run_the_update_script<br />
Query: SELECT  lc_value  FROM `mw_l10n_cache`  WHERE lc_lang = 'fr' AND lc_key = 'messages:dberr-problems'  LIMIT 1  <br />
Function: LCStore_DB::get<br />
Error: 1053 Server shutdown in progress (formationnmercur.mysql.db)<br />
' in /home/formationn/www/mercurewiki/includes/db/Database.php:781<br />
Stack trace:<br />
#0 /home/formationn/www/mercurewiki/includes/db/Database.php(751): DatabaseBase-&gt;reportQueryError('Server shutdown...', 1053, 'SELECT  lc_valu...', 'LCStore_DB::get', false)<br />
#1 /home/formationn/www/mercurewiki/includes/db/Database.php(1050): DatabaseBase-&gt;query('SELECT  lc_valu...', 'LCStore_DB::get')<br />
#2 /home/formationn/www/mercurewiki/includes/db/Database.php(1134): DatabaseBase-&gt;select('l10n_cache', Array, Array, 'LCStore_DB::get', Array, Array)<br />
#3 /home/formationn/www/mercurewiki/includes/LocalisationCache.php(792): DatabaseBase-&gt;selectRow('l10n_cache', Array, Array, 'LCStore_DB::get')<br />
#4 /home/formationn/www/mercurewiki/includes/LocalisationCache.php(313): LCStore_DB-&gt;get('fr', 'messages:dberr-...')<br />
#5 /home/formationn/www/mercurewiki/includes/LocalisationCache.php(231): LocalisationCache-&gt;loadSubitem('fr', 'messages', 'dberr-problems')<br />
#6 /home/formationn/www/mercurewiki/languages/Language.php(1574): LocalisationCache-&gt;getSubitem('fr', 'messages', 'dberr-problems')<br />
#7 /home/formationn/www/mercurewiki/includes/db/Database.php(2897): Language-&gt;getMessage('dberr-problems')<br />
#8 /home/formationn/www/mercurewiki/includes/Exception.php(197): DBConnectionError-&gt;getHTML()<br />
#9 /home/formationn/www/mercurewiki/includes/Exception.php(220): MWException-&gt;reportHTML()<br />
#10 /home/formationn/www/mercurewiki/includes/Exception.php(325): MWException-&gt;report()<br />
#11 /home/formationn/www/mercurewiki/includes/Exception.php(393): wfReportException(Object(DBConnectionError))<br />
#12 [internal function]: wfExceptionHandler(Object(DBConnectionError))<br />
#13 {main}<br />