{"id":32482,"date":"2019-12-02T12:27:14","date_gmt":"2019-12-02T20:27:14","guid":{"rendered":"https:\/\/kinqsta.com\/?post_type=knowledgebase&#038;p=56928"},"modified":"2025-10-01T20:05:44","modified_gmt":"2025-10-01T20:05:44","slug":"mysql-servern-har-forsvunnit","status":"publish","type":"post","link":"https:\/\/kinqsta.com\/se\/blog\/mysql-servern-har-forsvunnit\/","title":{"rendered":"S\u00e5 Fixar du Felet &#8221;MySQL-Servern Har F\u00f6rsvunnit&#8221; i WordPress"},"content":{"rendered":"<p>Databaser \u00e4r viktiga komponenter i de flesta moderna webbplatser, s\u00e5 fel som p\u00e5verkar dessa tenderar att vara s\u00e4rskilt oroande. &#8221;<strong>MySQL-servern har f\u00f6rsvunnit<\/strong>&#8221;-felet kan till exempel f\u00e5 dig att tro att din databas har g\u00e5tt f\u00f6rlorad. Det inneb\u00e4r att du kanske m\u00e5ste anv\u00e4nda din senaste <a href=\"https:\/\/kinqsta.com\/docs\/wordpress-hosting\/wordpress-backups\/#wordpress-backup\">s\u00e4kerhetskopia<\/a> f\u00f6r att f\u00e5 ig\u00e5ng din webbplats.<\/p>\n<p>Trots hur skr\u00e4mmande det l\u00e5ter, \u00e4r felet &#8221;MySQL-servern har f\u00f6rsvunnit&#8221; ganska l\u00e4tt att fixa. Faktum \u00e4r att med r\u00e4tt instruktioner, b\u00f6r din webbplats vara ig\u00e5ng igen p\u00e5 n\u00e5gra minuter.<\/p>\n<p>I den h\u00e4r artikeln kommer vi att visa dig hur &#8221;MySQL-servern har f\u00f6rsvunnit&#8221;-felet ser ut och g\u00e5r igenom vad som kan orsaka det i <a href=\"https:\/\/kinqsta.com\/se\/blog\/varfor-ska-man-anvanda-wordpress\/\">WordPress<\/a>. Sedan l\u00e4r vi dig hur du \u00e5tg\u00e4rdar det och f\u00f6rhindrar att det h\u00e4r felet dyker upp igen i framtiden.<\/p>\n<p>Nu s\u00e4tter vi ig\u00e5ng!<\/p>\n<div><\/div><kinsta-auto-toc heading=\"Table of Contents\" exclude=\"last\" list-style=\"arrow\" selector=\"h2\" count-number=\"-1\"><\/kinsta-auto-toc>\n<h2>En Introduktion till &#8221;MySQL-servern Har F\u00f6rsvunnit&#8221;-Felet<\/h2>\n<p>L\u00e5t oss f\u00f6rst ta en snabb titt p\u00e5 hur &#8221; MySQL-servern har f\u00f6rsvunnit&#8221;-felet ser ut:<\/p>\n<figure style=\"width: 900px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinqsta.com\/se\/wp-content\/uploads\/sites\/9\/2019\/10\/webblasare-som-visar-fer.png\" alt=\"Webbl\u00e4sare som visar \u201dMySQL-servern har f\u00f6rsvunnit\"-fel\" width=\"900\" height=\"171\"><figcaption class=\"wp-caption-text\">Webbl\u00e4sare som visar \u201dMySQL-servern har f\u00f6rsvunnit&#8221;-fel<\/figcaption><\/figure>\n<p>Felet i sig \u00e4r ganska enkelt och det visas n\u00e4stan alltid p\u00e5 samma s\u00e4tt. Beroende p\u00e5 vilken webbl\u00e4sare du anv\u00e4nder och serverns konfiguration kan dock den specifika formuleringen \u00e4ndras lite.<\/p>\n<p>N\u00e4r det g\u00e4ller sj\u00e4lva felet har det att g\u00f6ra med din <a href=\"https:\/\/kinqsta.com\/se\/blog\/vad-ar-mysql\/\">MySQL-databas<\/a>, som du kanske kan t\u00e4nka dig fr\u00e5n namnet. F\u00f6r att vara mer specifik, orsakar en av tre saker oftast detta fel p\u00e5 de flesta webbplatser:<\/p>\n<ol>\n<li><strong>Det finns en trasig tabell i din databas.<\/strong> Din <a href=\"https:\/\/kinqsta.com\/se\/blog\/wordpressdatabasen\/\">databas<\/a> blev skadad s\u00e5 du m\u00e5ste \u00e5terg\u00e5 till en s\u00e4kerhetskopia eller reparera den.<\/li>\n<li><strong>Din PHP &#8217;timeout&#8217;-inst\u00e4llning \u00e4r f\u00f6r l\u00e5g.<\/strong> Om ett PHP-skript beh\u00f6ver \u00e5tkomst till din databas och det inte kan h\u00e4mta informationen i <a href=\"https:\/\/www.php.net\/manual\/en\/function.set-time-limit.php\">timeout-f\u00f6nstret som har st\u00e4llts in<\/a> kan det ocks\u00e5 utl\u00f6sa det tidigare n\u00e4mnda felet.<\/li>\n<li><strong>&#8221;Paket&#8221; har antingen tappats eller \u00e4r f\u00f6r stora.<\/strong> Servern anser att detta \u00e4r fallet, det avbryter vanligtvis anslutningen och visar ist\u00e4llet felet.<\/li>\n<\/ol>\n<p>Lyckligtvis kan alla dessa problem enkelt l\u00f6sas. L\u00e5t oss prata om hur du kan starta fels\u00f6kningsprocessen.<\/p>\n<h2>S\u00e5 Fixar du Felet &#8221;MySQL-servern Har F\u00f6rsvunnit&#8221; i WordPress (3 metoder)<\/h2>\n<p>Som vi har sett finns det n\u00e5gra potentiella orsaker till detta WordPress-fel.<\/p>\n<p>D\u00e4rf\u00f6r finns det olika m\u00f6jliga l\u00f6sningar. I de flesta fall b\u00f6r en av korrigeringarna nedan ta bort felet p\u00e5 din webbplats. S\u00e5 om en inte fungerar, kan du helt enkelt g\u00e5 vidare till n\u00e4sta.<\/p>\n<h3>1. Redigera Din WordPress <em>wp-db.php<\/em>-fil<\/h3>\n<p>Om din webbplats PHP timeout-inst\u00e4llning \u00e4r f\u00f6r l\u00e5g och din databas \u00e4r f\u00f6r stor, kan att h\u00e4mta de data du beh\u00f6ver under det tidsf\u00f6nstret vara ett problem. Som vi n\u00e4mnde tidigare kan detta utl\u00f6sa &#8221;<em>MySQL-servern har f\u00f6rsvunnit<\/em>&#8221;-felet.<\/p>\n<p>F\u00f6r att f\u00f6rhindra att det h\u00e4nder m\u00e5ste du redigera en av dina WordPress-k\u00e4rnfiler, som heter <em>wp-db.php<\/em>. Du kan hitta den h\u00e4r filen i din WordPress rotmapp, genom att \u00f6ppna upp <em>wp-includes<\/em>-katalogen:<\/p>\n<figure style=\"width: 900px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinqsta.com\/se\/wp-content\/uploads\/sites\/9\/2019\/10\/wp-db-php-filen-1.png\" alt=\"wp-db.php-filen\" width=\"900\" height=\"147\"><figcaption class=\"wp-caption-text\">wp-db.php-filen<\/figcaption><\/figure>\n<p>F\u00f6r att komma \u00e5t dessa filer rekommenderar vi att du <a href=\"https:\/\/kinqsta.com\/se\/blog\/basta-ftp-klienterna\/#Filezilla\">anv\u00e4nder en FTP-klient som FileZilla<\/a> och <a href=\"https:\/\/kinqsta.com\/se\/blog\/hur-du-anvander-sftp\/\">ansluter via SFTP<\/a> (l\u00e4r dig skillnaden mellan <a href=\"https:\/\/kinqsta.com\/blog\/ftp-vs-sftp\/\">FTP och SFTP<\/a>). N\u00e4r du har anslutit till din webbplats, lokalisera <em>wp-db.php<\/em> och h\u00f6gerklicka p\u00e5 den f\u00f6r att \u00f6ppna filen med <a href=\"https:\/\/kinqsta.com\/se\/blog\/basta-textredigerarna\/\">din vanliga lokala textredigerare<\/a>. F\u00f6lj den h\u00e4r snabbguiden f\u00f6r att <a href=\"https:\/\/kinqsta.com\/se\/blog\/filezilla-visa-dolda-filer\/\">visa alla dolda filer i Filezilla<\/a>.<\/p>\n<p>S\u00f6k sedan igenom filen efter f\u00f6ljande rad:<\/p>\n<pre><code class=\"language-php\">$this-&gt;ready = true;<\/code><\/pre>\n<p>L\u00e4gg till f\u00f6ljande rad precis under den koden:<\/p>\n<pre><code class=\"language-php\">$this-&gt;query(\"set session wait_timeout=300\");<\/code><\/pre>\n<p>Vad den h\u00e4r koden g\u00f6r \u00e4r att st\u00e4lla in ditt PHP timeout-v\u00e4rde till 300 sekunder, vilket borde vara mycket mer \u00e4n du beh\u00f6ver f\u00f6r att f\u00f6rhindra att n\u00e5gra fel dyker upp.<\/p>\n<p>Spara nu \u00e4ndringarna till din <em>wp-db.php<\/em>-fil och se till att din webbplats laddas som den ska.<\/p>\n<p>Observera att om du \u00e4r en Kinsta-anv\u00e4ndare, b\u00f6r du inte beh\u00f6va \u00e4ndra din webbplats PHP-timeoutinst\u00e4llningar. <a href=\"https:\/\/kinqsta.com\/se\/priser\/\">Alla v\u00e5ra planer<\/a> har ett bas-timeoutv\u00e4rde av 300 sekunder direkt vid installation och vi kan hj\u00e4lpa dig att \u00f6ka den beroende p\u00e5 dina behov.<\/p>\n<h3>2. Reparera din WordPressdatabas<\/h3>\n<p>Ibland kan din WordPress-databas bli skadad, vilket i sin tur kan leda till fel n\u00e4r du f\u00f6rs\u00f6ker uppr\u00e4tta en anslutning till den. Detta \u00e4r inte s\u00e5 vanligt men det kan h\u00e4nda under en normal webbplats tillv\u00e4xt n\u00e4r du l\u00e4gger till fler tabeller i din databas (samt plugin- och tema-information).<\/p>\n<p>F\u00f6r att \u00e5tg\u00e4rda problemet kan du anv\u00e4nda en inbyggd WordPress-funktion f\u00f6r att <a href=\"https:\/\/kinqsta.com\/se\/blog\/felet-att-uppratta-databasanslutning\/#2-repairing-corrupt-database\">reparera din databas<\/a>. F\u00f6rst m\u00e5ste du dock aktivera den funktionen. Detta inneb\u00e4r att navigera till din WordPress-rotkatalog och \u00f6ppna <a href=\"https:\/\/kinqsta.com\/blog\/wp-config-php\/\"><em>wp-config.php<\/em>-filen<\/a> f\u00f6r att redigera den.<\/p>\n<p>N\u00e4r filen \u00e4r \u00f6ppen bl\u00e4ddrar du l\u00e4ngst ner och l\u00e4gger till f\u00f6ljande rad till den:<\/p>\n<pre><code class=\"language-php\">define('WP_ALLOW_REPAIR', true);<\/code><\/pre>\n<p>Den enkla kodraden talar om f\u00f6r WordPress att aktivera <a href=\"https:\/\/kinqsta.com\/blog\/wordpress-repair-database\/\">databasreparationsfunktionen<\/a>. Spara \u00e4ndringarna till wp-config.php, och st\u00e4ng filen. F\u00f6r att k\u00f6ra funktionen, bes\u00f6k bara f\u00f6ljande URL:<\/p>\n<p><code>https:\/\/yourwebsite.com\/wp-admin\/maint\/repair.php<\/code><\/p>\n<p>WordPress kommer d\u00e5 att fr\u00e5ga om du vill helt enkelt reparera din databas eller reparera och optimera den. Det f\u00f6rsta alternativet \u00e4r allt du beh\u00f6ver f\u00f6r att reparera &#8221;<em>MySQL-servern har f\u00f6rsvunnit<\/em>&#8221;- felet:<\/p>\n<figure style=\"width: 900px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinqsta.com\/se\/wp-content\/uploads\/sites\/9\/2019\/10\/alternativet-reparera-databas-wordpress-1.png\" alt=\"Alternativet Reparera databas i WordPress\" width=\"900\" height=\"425\"><figcaption class=\"wp-caption-text\">Alternativet Reparera databas i WordPress<\/figcaption><\/figure>\n<p>Processen borde inte ta l\u00e5ng tid, och n\u00e4r det \u00e4r gjort, b\u00f6r felet i fr\u00e5ga vara borta. Du har dock fortfarande lite resning att g\u00f6ra, eftersom du m\u00e5ste inaktivera databasreparationsfunktionen p\u00e5 din webbplats. Om du inte g\u00f6r det, <strong>kan vem som helst utl\u00f6sa det <\/strong>genom att komma \u00e5t samma URL.<\/p>\n<p>Innan du \u00e4r klar b\u00f6r du g\u00e5 d\u00e4rf\u00f6r tillbaka till din WordPress-rotkatalog och ta bort raden av kod som du lade till tidigare. Spara sedan dina \u00e4ndringar i filen och st\u00e4ng den.<\/p>\n<h3>3. \u00c5terst\u00e4ll Din Webbplats med Hj\u00e4lp Av en S\u00e4kerhetskopia Via Din hosting-leverant\u00f6r<\/h3>\n<p>Om allt annat misslyckas kan du alltid anv\u00e4nda en <a href=\"https:\/\/kinqsta.com\/se\/blog\/aterstaller-wordpress-sakerhetskopia\/\">fullst\u00e4ndig s\u00e4kerhetskopia av din webbplats<\/a> f\u00f6r att \u00e5terst\u00e4lla den till en punkt n\u00e4r databasen fungerade korrekt. Helst kommer du att g\u00f6ra detta med en nyligen gjord s\u00e4kerhetskopia s\u00e5 att du f\u00f6rlorar s\u00e5 lite data som m\u00f6jligt.<\/p>\n<p>Problemet \u00e4r att inte alla WordPress-hostingleverant\u00f6rer erbjuder inbyggd s\u00e4kerhetskopieringsfunktionalitet f\u00f6r sina anv\u00e4ndare. Det betyder att du ofta m\u00e5ste f\u00f6rlita dig p\u00e5 manuella l\u00f6sningar som <a href=\"https:\/\/kinqsta.com\/se\/blog\/wordpress-plugin-sakerhetskopior\/\">plugins<\/a>. Dessa verktyg \u00e4r inte n\u00f6dv\u00e4ndigtvis d\u00e5liga, men om du inte har tillg\u00e5ng till ditt WordPress-adminomr\u00e5de, kan det bli riktigt sv\u00e5rt att \u00e5terst\u00e4lla en s\u00e4kerhetskopia.<\/p>\n<aside role=\"note\" class=\"wp-block-kinsta-notice is-style-info\">\n            <h3>Info<\/h3>\n        <p>Kinsta erbjuder automatiska dagliga och systemgenererade s\u00e4kerhetskopior f\u00f6r alla planer. Valfria timvisa s\u00e4kerhetskopior finns ocks\u00e5.<\/p>\n<\/aside>\n\n<p>H\u00e4r p\u00e5 Kinsta, \u00e5 andra sidan, f\u00e5r du tillg\u00e5ng till <a href=\"https:\/\/kinqsta.com\/se\/wordpress-hosting\/\">fullst\u00e4ndiga s\u00e4kerhetskopior av din webbplats<\/a> med alla planer. F\u00f6r att \u00e5terst\u00e4lla din webbplats (inklusive dess databas) till en tidigare punkt, beh\u00f6ver du bara komma \u00e5t din hostingpanel och leta efter fliken <strong>S\u00e4kerhetskopior<\/strong>:<\/p>\n<figure style=\"width: 900px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinqsta.com\/se\/wp-content\/uploads\/sites\/9\/2019\/10\/aterstall-sakerhetskopia.png\" alt=\"\u00c5terst\u00e4ll din s\u00e4kerhetskopia i MyKinsta\" width=\"900\" height=\"510\"><figcaption class=\"wp-caption-text\">\u00c5terst\u00e4ll din s\u00e4kerhetskopia i MyKinsta<\/figcaption><\/figure>\n<p>Klicka p\u00e5 s\u00e4kerhetskopian du vill \u00e5terst\u00e4lla och du ser mer information om n\u00e4r den skapades. F\u00f6r varje s\u00e4kerhetskopia finns det en <strong>\u00e5terst\u00e4llningsknapp<\/strong> som du kan anv\u00e4nda f\u00f6r att \u00e5terst\u00e4lla din webbplats till dess tillst\u00e5nd vid den tiden.<\/p>\n<p>Kom dock ih\u00e5g: att anv\u00e4nda den h\u00e4r funktionen kommer att skriva \u00f6ver den aktuella versionen av din webbplats. S\u00e5 du b\u00f6r bara anv\u00e4nda den som en sista utv\u00e4g n\u00e4r du \u00e4r s\u00e4ker p\u00e5 att du inte kommer att f\u00f6rlora n\u00e5gon viktig information.<\/p>\n<aside role=\"note\" class=\"wp-block-kinsta-notice is-style-info\">\n            <h3>Info<\/h3>\n        <p>Alla Kinsta-planer har veckovis automatisk MySQL-databasoptimering f\u00f6r att s\u00e4kerst\u00e4lla b\u00e4ttre databasprestanda. <a href=\"https:\/\/kinqsta.com\/se\/priser\/?in-article-cta\">Kolla in v\u00e5ra planer<\/a> f\u00f6r mer info.<\/p>\n<\/aside>\n\n\n<h2>Sammanfattning<\/h2>\n<p>Ju mer din webbplats v\u00e4xer, desto mer data beh\u00f6ver den lagra. All den informationen g\u00e5r in i din WordPressdatabas. I vissa fall, om den blir f\u00f6r stor kan du st\u00f6ta p\u00e5 fel som <em>&#8221;MySQL-servern har f\u00f6rsvunnit&#8221;<\/em>.<\/p>\n<p>Om du st\u00f6ter p\u00e5 det h\u00e4r felet, \u00e4r detta tre s\u00e4tt du kan bli av med det:<\/p>\n<ol>\n<li>Redigera din WordPress <em>wp-db.php<\/em>-fil.<\/li>\n<li>Reparera din WordPressdatabas.<\/li>\n<li>\u00c5terst\u00e4ll din webbplats med hj\u00e4lp av en s\u00e4kerhetskopia via din hostingleverant\u00f6r.<\/li>\n<\/ol>\n<p>I den andra guiden visar vi dig ytterligare tips och steg om <a href=\"https:\/\/kinqsta.com\/blog\/wordpress-repair-database\/\">hur du fixar dina databasproblem i WordPress<\/a>.<\/p>\n<p>Nu n\u00e4r du vet hur man fixar det, \u00e4r det dags att faktiskt bli av med det h\u00e4r irriterande felmeddelandet. Om du fortfarande upplever problem med MySQL kanske du vill kolla <a href=\"https:\/\/kinqsta.com\/se\/blog\/mysql-1064-felet\/\">hur du \u00e5tg\u00e4rdar MySQL 1064-felet<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Databaser \u00e4r viktiga komponenter i de flesta moderna webbplatser, s\u00e5 fel som p\u00e5verkar dessa tenderar att vara s\u00e4rskilt oroande. &#8221;MySQL-servern har f\u00f6rsvunnit&#8221;-felet kan till exempel f\u00e5 &#8230;<\/p>\n","protected":false},"author":103,"featured_media":32488,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kinsta_gated_content":false,"_kinsta_gated_content_redirect":"","footnotes":""},"tags":[124,116],"topic":[796,797],"class_list":["post-32482","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","tag-mysql","tag-wordpresshelp","topic-mysql-databas","topic-mysql-fel"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.6 (Yoast SEO v24.6) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>S\u00e5 Fixar du Felet &quot;MySQL-Servern Har F\u00f6rsvunnit&quot; 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