{"id":36149,"date":"2020-03-07T08:52:38","date_gmt":"2020-03-07T07:52:38","guid":{"rendered":"https:\/\/kinsta.com\/?post_type=knowledgebase&#038;p=56928"},"modified":"2025-10-01T20:05:40","modified_gmt":"2025-10-01T19:05:40","slug":"mysql-server-has-gone-away","status":"publish","type":"post","link":"https:\/\/kinsta.com\/dk\/blog\/mysql-server-has-gone-away\/","title":{"rendered":"S\u00e5dan rettes fejlen &#8220;MySQL Server Has Gone Away&#8221; i WordPress"},"content":{"rendered":"<p>Databaser er n\u00f8glekomponenter p\u00e5 de fleste moderne websteder, s\u00e5 fejl, der p\u00e5virker din, har en tendens til at v\u00e6re s\u00e6rlig bekymrende. Fejlen &#8220;<strong>MySQL server has gone away<\/strong>&#8221; kan f.eks. F\u00e5 dig til at tro, at din database var g\u00e5et tabt. Det betyder, at du muligvis bliver n\u00f8dt til at ty til din seneste <a href=\"https:\/\/kinsta.com\/docs\/wordpress-hosting\/wordpress-backups\/#wordpress-backup\">backup<\/a> for at f\u00e5 dit websted i gang.<\/p>\n<p>P\u00e5 trods af hvor skr\u00e6mmende det lyder, er fejlen &#8220;MySQL server has gone away&#8221; imidlertid ret let at l\u00f8se. Faktisk, med de rigtige instruktioner, skal dit websted v\u00e6re backup og k\u00f8re i l\u00f8bet af f\u00e5 minutter.<\/p>\n<p>I denne artikel skal vi vise dig, hvordan &#8220;MySQL server has gone away&#8221; ser ud og nedbryde, hvad der kan for\u00e5rsage den i <a href=\"https:\/\/kinsta.com\/dk\/blog\/hvorfor-bruge-wordpress\/\">WordPress<\/a>. S\u00e5 l\u00e6rer vi dig, hvordan du l\u00f8ser det og forhindrer, at denne fejl vises igen i fremtiden.<\/p>\n<p>Lad os komme p\u00e5 arbejde!<\/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 til &#8220;MySQL server has gone away&#8221;<\/h2>\n<p>Lad os f\u00f8rst se hurtigt, hvordan fejlen &#8220;MySQL server has gone away&#8221; ser ud:<\/p>\n<figure style=\"width: 900px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/dk\/wp-content\/uploads\/sites\/12\/2019\/10\/browser-viser-img.png\" alt=\"Browser, der viser \"MySQL server has gone away\"\" width=\"900\" height=\"171\"><figcaption class=\"wp-caption-text\">Browser, der viser &#8220;MySQL server has gone away&#8221;<\/figcaption><\/figure>\n<p>Fejlen i sig selv er ret ligetil, og den vises n\u00e6sten altid p\u00e5 samme m\u00e5de. Afh\u00e6ngig af hvilken browser du bruger og din servers konfiguration, kan den specifikke ordlyd dog muligvis \u00e6ndre sig lidt.<\/p>\n<p>Hvad ang\u00e5r selve fejlen, har det at g\u00f8re med din <a href=\"https:\/\/kinsta.com\/dk\/blog\/hvad-er-mysql\/\">MySQL-database<\/a>, som du m\u00e5ske forestiller dig fra navnet. For at v\u00e6re mere specifik, for\u00e5rsager en af \u200b\u200btre ting normalt denne fejl p\u00e5 de fleste websteder:<\/p>\n<ol>\n<li><strong>Der er en brudt tabel i din database<\/strong>. Din <a href=\"https:\/\/kinsta.com\/dk\/blog\/wordpress-databasen\/\">database<\/a> blev beskadiget, s\u00e5 du er n\u00f8dt til at vende tilbage til en nylig backup eller reparere den.<\/li>\n<li><strong>Din PHP-timeout-indstilling er for lav<\/strong>. Hvis et PHP-script har brug for adgang til din database, og det ikke kan hente oplysningerne i <a href=\"https:\/\/www.php.net\/manual\/en\/function.set-time-limit.php\">det timeout, der er indstillet<\/a>, kan dette ogs\u00e5 udl\u00f8se den n\u00e6vnte fejl.<\/li>\n<li><strong>\u2018Pakker\u2019 er enten blevet tabt eller er for store<\/strong>. Serveren anser dette for at v\u00e6re tilf\u00e6ldet, den lukker i det v\u00e6sentlige forbindelsen og kaster fejlen op.<\/li>\n<\/ol>\n<p>Heldigvis kan alle disse problemer let l\u00f8ses. Lad os tale om, hvordan du kan starte fejlfindingsprocessen.<\/p>\n<h2>S\u00e5dan rettes fejlen &#8220;MySQL server has gone away&#8221; i WordPress (3 metoder)<\/h2>\n<p>Som vi har set, er der et par potentielle \u00e5rsager til netop denne WordPress-fejl.<\/p>\n<p>Af den grund er der forskellige mulige l\u00f8sninger. I de fleste tilf\u00e6lde skal en af \u200b\u200brettelserne nedenfor slippe af med fejlen p\u00e5 dit websted. S\u00e5 hvis man ikke fungerer, kan du bare g\u00e5 videre til det n\u00e6ste.<\/p>\n<h3>1. Rediger din WordPress wp-db.php fil<\/h3>\n<p>Hvis indstillingen for PHP-timeout for dit websted er for lav, og din database er for stor, kan det v\u00e6re et problem at hente de data, du har brug for i dette vindue. Som vi n\u00e6vnte f\u00f8r, kan dette udl\u00f8se fejlen &#8220;MySQL server has gone away&#8221;.<\/p>\n<p>For at forhindre, at det sker, skal du redigere en af \u200b\u200bdine WordPress-kernefiler, kaldet wp-db.php. Du kan finde denne fil i din WordPress rodmappe ved at \u00e5bne wp-includes kataloget:<\/p>\n<figure style=\"width: 900px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/dk\/wp-content\/uploads\/sites\/12\/2019\/10\/wp-db-filen1.png\" alt=\"Wp-db.php filen\" width=\"900\" height=\"147\"><figcaption class=\"wp-caption-text\">Wp-db.php filen<\/figcaption><\/figure>\n<p>For at f\u00e5 adgang til disse filer, anbefaler vi, at du bruger en <a href=\"https:\/\/kinsta.com\/blog\/best-ftp-clients\/#Filezilla\">FTP-klient som FileZilla<\/a> og <a href=\"https:\/\/kinsta.com\/dk\/blog\/saadan-bruger-du-sftp\/\">opretter forbindelse via SFTP<\/a>. N\u00e5r du har oprettet forbindelse til dit websted, skal du finde wp-db.php og h\u00f8jreklikke p\u00e5 det for at \u00e5bne filen ved hj\u00e6lp af din standard lokale teksteditor.\u00a0<span style=\"font-family: Roboto, -apple-system, BlinkMacSystemFont, 'Segoe UI', Oxygen-Sans, Ubuntu, Cantarell, 'Helvetica Neue', sans-serif;font-size: 1rem\">F\u00f8lg denne hurtige <\/span><a style=\"font-family: Roboto, -apple-system, BlinkMacSystemFont, 'Segoe UI', Oxygen-Sans, Ubuntu, Cantarell, 'Helvetica Neue', sans-serif;font-size: 1rem\" href=\"https:\/\/kinsta.com\/dk\/blog\/filezilla-vis-skjulte-filer\/\">vejledning for at vise alle skjulte filer i Filezilla<\/a><span style=\"font-family: Roboto, -apple-system, BlinkMacSystemFont, 'Segoe UI', Oxygen-Sans, Ubuntu, Cantarell, 'Helvetica Neue', sans-serif;font-size: 1rem\">.<\/span><\/p>\n<p>S\u00f8g derefter gennem filen efter f\u00f8lgende linje:<\/p>\n<pre><code class=\"language-php\">$this-&gt;ready = true;<\/code><\/pre>\n<p>Tilf\u00f8j f\u00f8lgende linje lige under denne kode:<\/p>\n<pre><code class=\"language-php\">$this-&gt;query(\"set session wait_timeout=300\");<\/code><\/pre>\n<p>Hvad denne kode g\u00f8r er at indstille din PHP-timeoutv\u00e6rdi til 300 sekunder, hvilket skal v\u00e6re meget mere, end du har brug for for at forhindre, at der vises fejl.<\/p>\n<p>Gem nu \u00e6ndringerne i din wp-db.php-fil, og s\u00f8rg for, at dit websted indl\u00e6ses som det skal.<\/p>\n<p>Bem\u00e6rk, at hvis du er en Kinsta-bruger, beh\u00f8ver du ikke at \u00e6ndre dit websteds PHP-timeoutindstillinger. <a href=\"https:\/\/kinsta.com\/dk\/prissaetning\/\">Alle vores planer<\/a> har en base-timeoutv\u00e6rdi p\u00e5 300 sekunder ude af boksen, og vi kan hj\u00e6lpe dig med at \u00f8ge den afh\u00e6ngigt af dine behov.<\/p>\n<h3>2. Reparer din WordPress-database<\/h3>\n<p>Nogle gange kan din WordPress-database blive beskadiget, hvilket igen kan f\u00f8re til fejl, n\u00e5r du pr\u00f8ver at oprette en forbindelse med den. Dette er ikke s\u00e5 almindeligt, men det kan ske i l\u00f8bet af et normalt websteds v\u00e6kst, n\u00e5r du tilf\u00f8jer flere tabeller til din database (samt plugin- og temainformation).<\/p>\n<p>For at l\u00f8se dette problem kan du bruge en indbygget WordPress-funktion til at <a href=\"https:\/\/kinsta.com\/dk\/blog\/fejl-ved-etablering-af-en-databaseforbindelse\/#2-repairing-corrupt-database\">reparere din database<\/a>. F\u00f8rst skal du dog aktivere denne funktion. Dette involverer at navigere til dit WordPress rodkatalog og \u00e5bne <a href=\"https:\/\/kinsta.com\/blog\/wp-config-php\/\">wp-config.php file<\/a> for at redigere den.<\/p>\n<p>N\u00e5r filen er \u00e5ben, skal du rulle til bunden og tilf\u00f8je den f\u00f8lgende linje til den:<\/p>\n<pre><code class=\"language-php\">define('WP_ALLOW_REPAIR', true);<\/code><\/pre>\n<p>Den enkle kodelinie fort\u00e6ller WordPress at <a href=\"https:\/\/kinsta.com\/dk\/blog\/reparerer-wordpress-database\/\">aktivere database reparationsfunktionen<\/a>. Gem \u00e6ndringerne p\u00e5 wp-config.php, og luk filen. For at k\u00f8re funktionen skal du bare bes\u00f8ge f\u00f8lgende URL:<\/p>\n<p><code>https:\/\/yourwebsite.com\/wp-admin\/maint\/repair.php<\/code><\/p>\n<p>WordPress sp\u00f8rger derefter, om du blot vil reparere din database eller reparere og optimere den. Den f\u00f8rste mulighed er alt, hvad du har brug for for at rette fejlen &#8220;MySQL server er forsvundet&#8221;:<\/p>\n<figure style=\"width: 900px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/dk\/wp-content\/uploads\/sites\/12\/2019\/10\/valg-reparations-database-wordpress.png\" alt=\"Valg af reparations-database i WordPress\" width=\"900\" height=\"425\"><figcaption class=\"wp-caption-text\">Valg af reparations-database i WordPress<\/figcaption><\/figure>\n<p>Processen b\u00f8r ikke tage lang tid, og n\u00e5r den er f\u00e6rdig, skal den p\u00e5g\u00e6ldende fejl v\u00e6re v\u00e6k. Du har dog stadig noget oprydning at lave, da du bliver n\u00f8dt til at deaktivere database-reparationsfunktionen p\u00e5 dit websted. Hvis du ikke g\u00f8r det, <strong>kunne nogen udl\u00f8se det<\/strong> ved at f\u00e5 adgang til den samme URL.<\/p>\n<p>F\u00f8r du pakker sammen, skal du derfor vende tilbage til dit WordPress-rodmappe og fjerne linjen med kode, du tilf\u00f8jede tidligere. Gem derefter dine \u00e6ndringer i filen, og luk den.<\/p>\n<h3>3. Gendan dit websted ved hj\u00e6lp af en backup gennem din hostingudbyder<\/h3>\n<p>Hvis alt andet mislykkes, kan du altid bruge en <a href=\"https:\/\/kinsta.com\/dk\/blog\/gendannes-wordpress-sikkerhedskopiering\/\">fuld backup af dit websted til at gendanne det<\/a> til et punkt, hvor databasen fungerede korrekt. Ideelt set vil du g\u00f8re dette med en nylig backup, s\u00e5 du mister s\u00e5 lidt data som muligt.<\/p>\n<p>Problemet er, at ikke alle WordPress-web hosts tilbyder indbygget backup-funktionalitet for deres brugere. Det betyder, at du ofte sidder fast ved at bruge manuelle l\u00f8sninger, s\u00e5som plugins. Disse v\u00e6rkt\u00f8jer er ikke n\u00f8dvendigvis d\u00e5rlige, men hvis du ikke har adgang til dit WordPress admin-omr\u00e5de, bliver det en h\u00f8j ordre at gendanne en backup.<\/p>\n<aside role=\"note\" class=\"wp-block-kinsta-notice is-style-info\">\n            <h3>Info<\/h3>\n        <p>Kinsta leverer automatisk daglige og systemgenererede backups til alle planer. Valgfri timelige backups er ogs\u00e5 tilg\u00e6ngelige.<\/p>\n<\/aside>\n\n<p>Her p\u00e5 Kinsta p\u00e5 den anden side f\u00e5r du adgang til <a href=\"https:\/\/kinsta.com\/dk\/wordpress-hosting\/\">fuld backup af dit websted<\/a> med enhver plan. For at gendanne dit websted (inklusive dets database) til et tidligere punkt, er du bare n\u00f8dt til at f\u00e5 adgang til dit hosting-dashboard og kigge efter fanen <strong>Backups<\/strong>:<\/p>\n<figure style=\"width: 900px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/dk\/wp-content\/uploads\/sites\/12\/2019\/10\/gendan-sikkerhedskopi-mykinsta.png\" alt=\"Gendan din sikkerhedskopi i MyKinsta\" width=\"900\" height=\"510\"><figcaption class=\"wp-caption-text\">Gendan din sikkerhedskopi i MyKinsta<\/figcaption><\/figure>\n<p>Klik p\u00e5 den sikkerhedskopi, du vil gendanne, og du vil se flere detaljer om, hvorn\u00e5r det blev oprettet. For hver backup er der en <strong>Gendan<\/strong>-knap, du kan bruge til at returnere dit websted til dets tilstand p\u00e5 det tidspunkt.<\/p>\n<p>Husk dog: Brug af denne funktionalitet overskriver den aktuelle version af dit websted. S\u00e5 du vil kun bruge det som en sidste udvej, n\u00e5r du er sikker p\u00e5, at du ikke mister kritiske oplysninger.<\/p>\n<aside role=\"note\" class=\"wp-block-kinsta-notice is-style-info\">\n            <h3>Info<\/h3>\n        <p>Alle Kinsta-planer indeholder ugentlig automatisk MySQL-databaseoptimering for at sikre bedre databaseydelse. <a href=\"https:\/\/kinsta.com\/dk\/prissaetning\/?in-article-cta\">Se vores planer<\/a> for mere info.<\/p>\n<\/aside>\n\n\n<h2>Resum\u00e9<\/h2>\n<p>Jo mere dit websted vokser, jo flere data skal det gemmes. Alle disse oplysninger g\u00e5r i din WordPress-database. I nogle tilf\u00e6lde, hvis det bliver for stort, kan du opst\u00e5 fejl, s\u00e5som &#8220;MySQL server has gone away&#8221;.<\/p>\n<p>Hvis du st\u00f8der p\u00e5 netop denne fejl, er her tre m\u00e5der, du kan slippe af med:<\/p>\n<ol>\n<li>Rediger din WordPress wp-db.php fil.<\/li>\n<li>Reparer din WordPress-database.<\/li>\n<li>Gendan dit websted ved hj\u00e6lp af en sikkerhedskopi gennem din hostingudbyder.<\/li>\n<\/ol>\n<p>I denne anden vejledning viser vi dig yderligere tip og trin til, <a href=\"https:\/\/kinsta.com\/dk\/blog\/reparerer-wordpress-database\/\">hvordan du reparerer dine WordPress-databaseproblemer<\/a>.<\/p>\n<p>Nu hvor du ved, hvordan du l\u00f8ser, er det p\u00e5 tide at faktisk slippe af med denne irriterende fejlmeddelelse. Hvis du stadig oplever problemer med MySQL, kan du tjekke <a href=\"https:\/\/kinsta.com\/dk\/blog\/mysql-1064-error\/\">S\u00e5dan rettes MySQL 1064 eror<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Databaser er n\u00f8glekomponenter p\u00e5 de fleste moderne websteder, s\u00e5 fejl, der p\u00e5virker din, har en tendens til at v\u00e6re s\u00e6rlig bekymrende. Fejlen &#8220;MySQL server has gone &#8230;<\/p>\n","protected":false},"author":103,"featured_media":36155,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kinsta_gated_content":false,"_kinsta_gated_content_redirect":"","footnotes":""},"tags":[134,210],"topic":[719,718],"class_list":["post-36149","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","tag-mysql","tag-wordpresshjalp","topic-mysql-fejl","topic-mysql-database"],"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\u00e5dan rettes fejlen &quot;MySQL Server Has Gone Away&quot; i WordPress<\/title>\n<meta name=\"description\" content=\"L\u00e6r, hvordan du l\u00f8ser fejlmeddelelsen \u201cMySQL server has gone away\u201d i WordPress med disse tre effektive metoder, og hvad der for\u00e5rsager det.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/kinsta.com\/dk\/blog\/mysql-server-has-gone-away\/\" \/>\n<meta property=\"og:locale\" content=\"da_DK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"S\u00e5dan rettes fejlen &quot;MySQL Server Has Gone Away&quot; 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