{"id":21853,"date":"2025-10-23T08:06:13","date_gmt":"2025-10-23T01:06:13","guid":{"rendered":"https:\/\/interdata.vn\/blog\/?p=21853"},"modified":"2026-03-21T09:31:10","modified_gmt":"2026-03-21T02:31:10","slug":"fix-loi-error-establishing-a-database-connection","status":"publish","type":"post","link":"https:\/\/interdata.vn\/blog\/fix-loi-error-establishing-a-database-connection\/","title":{"rendered":"7+ C\u00e1ch s\u1eeda l\u1ed7i Error Establishing a Database Connection Hosting"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-white ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">N\u1ed8I DUNG<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/interdata.vn\/blog\/fix-loi-error-establishing-a-database-connection\/#Loi-Error-Establishing-a-Database-Connection-la-gi\" >L\u1ed7i Error Establishing a Database Connection l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/interdata.vn\/blog\/fix-loi-error-establishing-a-database-connection\/#Nguyen-nhan-pho-bien-gay-ra-loi-%E2%80%9CError-Establishing-a-Database-Connection%E2%80%9D\" >Nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn g\u00e2y ra l\u1ed7i &#8220;Error Establishing a Database Connection&#8221;<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/interdata.vn\/blog\/fix-loi-error-establishing-a-database-connection\/#1-Thong-tin-ket-noi-co-so-du-lieu-khong-chinh-xac\" >1. Th\u00f4ng tin k\u1ebft n\u1ed1i c\u01a1 s\u1edf d\u1eef li\u1ec7u kh\u00f4ng ch\u00ednh x\u00e1c<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/interdata.vn\/blog\/fix-loi-error-establishing-a-database-connection\/#2-Co-so-du-lieu-khong-hoat-dong-hoac-bi-loi\" >2. C\u01a1 s\u1edf d\u1eef li\u1ec7u kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng ho\u1eb7c b\u1ecb l\u1ed7i<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/interdata.vn\/blog\/fix-loi-error-establishing-a-database-connection\/#3-Quyen-truy-cap-khong-du\" >3. Quy\u1ec1n truy c\u1eadp kh\u00f4ng \u0111\u1ee7<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/interdata.vn\/blog\/fix-loi-error-establishing-a-database-connection\/#4-Xung-dot-cong-ket-noi\" >4. Xung \u0111\u1ed9t c\u1ed5ng k\u1ebft n\u1ed1i<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/interdata.vn\/blog\/fix-loi-error-establishing-a-database-connection\/#5-Loi-trong-qua-trinh-cai-dat\" >5. L\u1ed7i trong qu\u00e1 tr\u00ecnh c\u00e0i \u0111\u1eb7t<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/interdata.vn\/blog\/fix-loi-error-establishing-a-database-connection\/#6-Loi-cau-hinh-tuong-lua\" >6. L\u1ed7i c\u1ea5u h\u00ecnh t\u01b0\u1eddng l\u1eeda<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/interdata.vn\/blog\/fix-loi-error-establishing-a-database-connection\/#Huong-dan-cach-fix-loi-%E2%80%9CError-Establishing-a-Database-Connection%E2%80%9D\" >H\u01b0\u1edbng d\u1eabn c\u00e1ch fix l\u1ed7i &#8220;Error Establishing a Database Connection&#8221;<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/interdata.vn\/blog\/fix-loi-error-establishing-a-database-connection\/#Cach-1-Kiem-tra-thong-tin-ket-noi-trong-tep-wp-configphp\" >C\u00e1ch 1:\u00a0Ki\u1ec3m tra th\u00f4ng tin k\u1ebft n\u1ed1i trong t\u1ec7p wp-config.php<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/interdata.vn\/blog\/fix-loi-error-establishing-a-database-connection\/#Cach-2-Kiem-tra-quyen-truy-cap-cua-nguoi-dung-va-co-so-du-lieu\" >C\u00e1ch 2: Ki\u1ec3m tra quy\u1ec1n truy c\u1eadp c\u1ee7a ng\u01b0\u1eddi d\u00f9ng v\u00e0 c\u01a1 s\u1edf d\u1eef li\u1ec7u<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/interdata.vn\/blog\/fix-loi-error-establishing-a-database-connection\/#Cach-3-Kiem-tra-gia-tri-prefix-trong-tep-wp-configphp\" >C\u00e1ch 3: Ki\u1ec3m tra gi\u00e1 tr\u1ecb prefix trong t\u1ec7p wp-config.php<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/interdata.vn\/blog\/fix-loi-error-establishing-a-database-connection\/#Cach-4-Kiem-tra-cac-extension-MySQL-va-MySQLi-co-duoc-bat-trong-PHP-hay-khong\" >C\u00e1ch 4: Ki\u1ec3m tra c\u00e1c extension MySQL v\u00e0 MySQLi c\u00f3 \u0111\u01b0\u1ee3c b\u1eadt trong PHP hay kh\u00f4ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/interdata.vn\/blog\/fix-loi-error-establishing-a-database-connection\/#Cach-5-Thu-sua-chua-co-so-du-lieu-WordPress\" >C\u00e1ch 5. Th\u1eed s\u1eeda ch\u1eefa c\u01a1 s\u1edf d\u1eef li\u1ec7u WordPress<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/interdata.vn\/blog\/fix-loi-error-establishing-a-database-connection\/#Cach-6-Tao-moi-database\" >C\u00e1ch 6: T\u1ea1o m\u1edbi database<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/interdata.vn\/blog\/fix-loi-error-establishing-a-database-connection\/#Cach-7-Vo-hieu-hoa-plugin-WordPress-khi-gap-loi\" >C\u00e1ch 7: V\u00f4 hi\u1ec7u h\u00f3a plugin WordPress khi g\u1eb7p l\u1ed7i<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<p>L\u1ed7i <strong>&#8220;Error Establishing a Database Connection&#8221;<\/strong> l\u00e0 m\u1ed9t trong nh\u1eefng l\u1ed7i ph\u1ed5 bi\u1ebfn v\u00e0 kh\u00e1 kh\u00f3 ch\u1ecbu khi s\u1eed d\u1ee5ng c\u00e1c <a href=\"https:\/\/interdata.vn\/blog\/cms-la-gi\/\">h\u1ec7 qu\u1ea3n tr\u1ecb n\u1ed9i dung<\/a> nh\u01b0 <a href=\"https:\/\/interdata.vn\/blog\/wordpress-la-gi\/\">WordPress<\/a>. L\u1ed7i n\u00e0y th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n khi <a href=\"https:\/\/interdata.vn\/blog\/website-la-gi\/\">website<\/a> kh\u00f4ng th\u1ec3 k\u1ebft n\u1ed1i \u0111\u1ebfn c\u01a1 s\u1edf d\u1eef li\u1ec7u <a href=\"https:\/\/interdata.vn\/blog\/mysql-la-gi\/\">MySQL<\/a>, khi\u1ebfn cho website kh\u00f4ng th\u1ec3 t\u1ea3i l\u00ean ho\u1eb7c hi\u1ec3n th\u1ecb \u0111\u00fang c\u00e1ch. C\u00f9ng InterData t\u00ecm hi\u1ec3u nguy\u00ean nh\u00e2n g\u00e2y ra l\u1ed7i n\u00e0y v\u00e0 h\u01b0\u1edbng d\u1eabn b\u1ea1n 7 c\u00e1ch <strong>s\u1eeda l\u1ed7i Error Establishing a Database Connection<\/strong>\u00a0m\u1ed9t c\u00e1ch chi ti\u1ebft v\u00e0 d\u1ec5 hi\u1ec3u, gi\u00fap b\u1ea1n nhanh ch\u00f3ng kh\u00f4i ph\u1ee5c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a website.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Loi-Error-Establishing-a-Database-Connection-la-gi\"><\/span>L\u1ed7i Error Establishing a Database Connection l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>L\u1ed7i &#8220;Error Establishing a Database Connection&#8221;<\/strong> l\u00e0 m\u1ed9t th\u00f4ng b\u00e1o l\u1ed7i ph\u1ed5 bi\u1ebfn trong c\u00e1c <a href=\"https:\/\/interdata.vn\/blog\/web-application-la-gi\/\">\u1ee9ng d\u1ee5ng web<\/a>, \u0111\u1eb7c bi\u1ec7t l\u00e0 c\u00e1c h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd n\u1ed9i dung (CMS) nh\u01b0 WordPress, khi kh\u00f4ng th\u1ec3 k\u1ebft n\u1ed1i v\u1edbi c\u01a1 s\u1edf d\u1eef li\u1ec7u MySQL ho\u1eb7c <a href=\"https:\/\/interdata.vn\/blog\/mariadb-la-gi\/\">MariaDB<\/a>. L\u1ed7i n\u00e0y th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n tr\u00ean website khi h\u1ec7 th\u1ed1ng kh\u00f4ng th\u1ec3 thi\u1ebft l\u1eadp k\u1ebft n\u1ed1i v\u1edbi c\u01a1 s\u1edf d\u1eef li\u1ec7u, v\u00e0 \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 do nhi\u1ec1u nguy\u00ean nh\u00e2n kh\u00e1c nhau.<\/p>\n<figure id=\"attachment_21866\" aria-describedby=\"caption-attachment-21866\" style=\"width: 986px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-21866\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Loi-Error-Establishing-a-Database-Connection-la-gi.webp\" alt=\"L\u1ed7i Error Establishing a Database Connection l\u00e0 g\u00ec?\" width=\"986\" height=\"575\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Loi-Error-Establishing-a-Database-Connection-la-gi.webp 986w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Loi-Error-Establishing-a-Database-Connection-la-gi-300x175.webp 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Loi-Error-Establishing-a-Database-Connection-la-gi-768x448.webp 768w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Loi-Error-Establishing-a-Database-Connection-la-gi-750x437.webp 750w\" sizes=\"auto, (max-width: 986px) 100vw, 986px\" \/><figcaption id=\"caption-attachment-21866\" class=\"wp-caption-text\">L\u1ed7i Error Establishing a Database Connection l\u00e0 g\u00ec?<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"Nguyen-nhan-pho-bien-gay-ra-loi-%E2%80%9CError-Establishing-a-Database-Connection%E2%80%9D\"><\/span>Nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn g\u00e2y ra l\u1ed7i &#8220;Error Establishing a Database Connection&#8221;<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>L\u1ed7i &#8220;Error Establishing a Database Connection&#8221; x\u1ea3y ra khi website c\u1ee7a b\u1ea1n kh\u00f4ng th\u1ec3 k\u1ebft n\u1ed1i \u0111\u1ebfn c\u01a1 s\u1edf d\u1eef li\u1ec7u MySQL ho\u1eb7c MariaDB. \u0110\u00e2y l\u00e0 m\u1ed9t l\u1ed7i ph\u1ed5 bi\u1ebfn, \u0111\u1eb7c bi\u1ec7t trong c\u00e1c \u1ee9ng d\u1ee5ng web nh\u01b0 WordPress. C\u00e1c nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn g\u00e2y ra l\u1ed7i n\u00e0y bao g\u1ed3m:<\/p>\n<h3><span class=\"ez-toc-section\" id=\"1-Thong-tin-ket-noi-co-so-du-lieu-khong-chinh-xac\"><\/span>1. Th\u00f4ng tin k\u1ebft n\u1ed1i c\u01a1 s\u1edf d\u1eef li\u1ec7u kh\u00f4ng ch\u00ednh x\u00e1c<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>C\u00e1c th\u00f4ng tin trong file c\u1ea5u h\u00ecnh (v\u00ed d\u1ee5: wp-config.php trong WordPress) c\u00f3 th\u1ec3 sai, nh\u01b0:<\/p>\n<ul>\n<li>T\u00ean c\u01a1 s\u1edf d\u1eef li\u1ec7u kh\u00f4ng \u0111\u00fang.<\/li>\n<li>T\u00ean ng\u01b0\u1eddi d\u00f9ng c\u01a1 s\u1edf d\u1eef li\u1ec7u (database user) sai.<\/li>\n<li>M\u1eadt kh\u1ea9u c\u01a1 s\u1edf d\u1eef li\u1ec7u kh\u00f4ng ch\u00ednh x\u00e1c.<\/li>\n<li>T\u00ean <a href=\"https:\/\/interdata.vn\/blog\/database-server-la-gi\/\">m\u00e1y ch\u1ee7 c\u01a1 s\u1edf d\u1eef li\u1ec7u<\/a> (<a href=\"https:\/\/interdata.vn\/blog\/hostname-la-gi\/\">hostname<\/a>) b\u1ecb sai ho\u1eb7c kh\u00f4ng \u0111\u00fang (v\u00ed d\u1ee5: localhost ho\u1eb7c <a href=\"https:\/\/interdata.vn\/blog\/dia-chi-ip-la-gi\/\">\u0111\u1ecba ch\u1ec9 IP<\/a> c\u1ee7a <a href=\"https:\/\/interdata.vn\/blog\/may-chu-server-la-gi\/\">m\u00e1y ch\u1ee7<\/a> c\u01a1 s\u1edf d\u1eef li\u1ec7u).<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"2-Co-so-du-lieu-khong-hoat-dong-hoac-bi-loi\"><\/span>2. C\u01a1 s\u1edf d\u1eef li\u1ec7u kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng ho\u1eb7c b\u1ecb l\u1ed7i<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>M\u00e1y ch\u1ee7 c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u00f3 th\u1ec3 d\u1eebng ho\u1ea1t \u0111\u1ed9ng ho\u1eb7c g\u1eb7p s\u1ef1 c\u1ed1 k\u1ef9 thu\u1eadt.<\/li>\n<li>M\u00e1y ch\u1ee7 c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u00f3 th\u1ec3 b\u1ecb qu\u00e1 t\u1ea3i v\u00ec qu\u00e1 nhi\u1ec1u k\u1ebft n\u1ed1i \u0111\u1ed3ng th\u1eddi ho\u1eb7c v\u00ec c\u00e1c t\u00e1c v\u1ee5 n\u1eb7ng n\u1ec1.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"3-Quyen-truy-cap-khong-du\"><\/span>3. Quy\u1ec1n truy c\u1eadp kh\u00f4ng \u0111\u1ee7<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>T\u00e0i kho\u1ea3n ng\u01b0\u1eddi d\u00f9ng m\u00e0 website s\u1eed d\u1ee5ng \u0111\u1ec3 k\u1ebft n\u1ed1i v\u1edbi c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u00f3 th\u1ec3 kh\u00f4ng c\u00f3 quy\u1ec1n truy c\u1eadp \u0111\u1ea7y \u0111\u1ee7 v\u00e0o c\u01a1 s\u1edf d\u1eef li\u1ec7u ho\u1eb7c quy\u1ec1n b\u1ecb thay \u0111\u1ed5i. H\u00e3y \u0111\u1ea3m b\u1ea3o r\u1eb1ng ng\u01b0\u1eddi d\u00f9ng \u0111\u00e3 \u0111\u01b0\u1ee3c c\u1ea5p quy\u1ec1n \u0111\u1ea7y \u0111\u1ee7 v\u00e0 c\u00f3 quy\u1ec1n truy c\u1eadp ch\u00ednh x\u00e1c v\u00e0o c\u01a1 s\u1edf d\u1eef li\u1ec7u.<\/p>\n<figure id=\"attachment_21868\" aria-describedby=\"caption-attachment-21868\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-21868\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Nguyen-nhan-pho-bien-gay-ra-loi-Error-Establishing-a-Database-Connection.webp\" alt=\"Nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn g\u00e2y ra l\u1ed7i Error Establishing a Database Connection\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Nguyen-nhan-pho-bien-gay-ra-loi-Error-Establishing-a-Database-Connection.webp 800w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Nguyen-nhan-pho-bien-gay-ra-loi-Error-Establishing-a-Database-Connection-300x188.webp 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Nguyen-nhan-pho-bien-gay-ra-loi-Error-Establishing-a-Database-Connection-768x480.webp 768w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Nguyen-nhan-pho-bien-gay-ra-loi-Error-Establishing-a-Database-Connection-750x469.webp 750w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-21868\" class=\"wp-caption-text\">Nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn g\u00e2y ra l\u1ed7i Error Establishing a Database Connection<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"4-Xung-dot-cong-ket-noi\"><\/span>4. Xung \u0111\u1ed9t c\u1ed5ng k\u1ebft n\u1ed1i<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u00f4i khi, c\u1ed5ng k\u1ebft n\u1ed1i m\u1eb7c \u0111\u1ecbnh c\u1ee7a MySQL (c\u1ed5ng 3306) c\u00f3 th\u1ec3 b\u1ecb \u1ee9ng d\u1ee5ng ho\u1eb7c ti\u1ebfn tr\u00ecnh kh\u00e1c s\u1eed d\u1ee5ng. \u0110\u1ec3 tr\u00e1nh t\u00ecnh tr\u1ea1ng xung \u0111\u1ed9t n\u00e0y, b\u1ea1n c\u00f3 th\u1ec3 thay \u0111\u1ed5i c\u1ed5ng k\u1ebft n\u1ed1i trong t\u1ec7p c\u1ea5u h\u00ecnh c\u1ee7a MySQL.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"5-Loi-trong-qua-trinh-cai-dat\"><\/span>5. L\u1ed7i trong qu\u00e1 tr\u00ecnh c\u00e0i \u0111\u1eb7t<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>N\u1ebfu b\u1ea1n m\u1edbi c\u00e0i \u0111\u1eb7t XAMPP ho\u1eb7c MySQL, c\u00f3 th\u1ec3 \u0111\u00e3 x\u1ea3y ra l\u1ed7i trong qu\u00e1 tr\u00ecnh c\u00e0i \u0111\u1eb7t. Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y, b\u1ea1n c\u00f3 th\u1ec3 th\u1eed c\u00e0i \u0111\u1eb7t l\u1ea1i ho\u1eb7c ki\u1ec3m tra c\u00e1c b\u1ea3n c\u1eadp nh\u1eadt v\u00e0 b\u1ea3n v\u00e1 m\u1edbi cho XAMPP v\u00e0 MySQL.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"6-Loi-cau-hinh-tuong-lua\"><\/span>6. L\u1ed7i c\u1ea5u h\u00ecnh t\u01b0\u1eddng l\u1eeda<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>C\u1ea5u h\u00ecnh <a href=\"https:\/\/interdata.vn\/blog\/tuong-lua-firewall\/\">t\u01b0\u1eddng l\u1eeda<\/a> ho\u1eb7c m\u1ea1ng c\u00f3 th\u1ec3 g\u00e2y c\u1ea3n tr\u1edf k\u1ebft n\u1ed1i gi\u1eefa \u1ee9ng d\u1ee5ng v\u00e0 c\u01a1 s\u1edf d\u1eef li\u1ec7u, \u0111\u1eb7c bi\u1ec7t khi c\u01a1 s\u1edf d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef tr\u00ean m\u00e1y ch\u1ee7 kh\u00e1c. N\u1ebfu t\u01b0\u1eddng l\u1eeda kh\u00f4ng cho ph\u00e9p k\u1ebft n\u1ed1i \u0111\u1ebfn c\u1ed5ng MySQL, l\u1ed7i n\u00e0y s\u1ebd x\u1ea3y ra.<\/p>\n<p>\u0110\u1ec3 kh\u1eafc ph\u1ee5c l\u1ed7i Error Establishing a Database Connection, b\u1ea1n c\u00f3 th\u1ec3 ki\u1ec3m tra c\u00e1c nguy\u00ean nh\u00e2n tr\u00ean v\u00e0 th\u1ef1c hi\u1ec7n c\u00e1c \u0111i\u1ec1u ch\u1ec9nh c\u1ea7n thi\u1ebft. N\u1ebfu v\u1eabn g\u1eb7p kh\u00f3 kh\u0103n, b\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o t\u00e0i li\u1ec7u h\u01b0\u1edbng d\u1eabn d\u01b0\u1edbi \u0111\u00e2y ho\u1eb7c t\u00ecm s\u1ef1 h\u1ed7 tr\u1ee3 t\u1eeb c\u1ed9ng \u0111\u1ed3ng qua c\u00e1c di\u1ec5n \u0111\u00e0n chuy\u00ean m\u00f4n.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Huong-dan-cach-fix-loi-%E2%80%9CError-Establishing-a-Database-Connection%E2%80%9D\"><\/span>H\u01b0\u1edbng d\u1eabn c\u00e1ch fix l\u1ed7i &#8220;Error Establishing a Database Connection&#8221;<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Khi th\u00f4ng b\u00e1o \u201cerror establishing a database connection\u201d xu\u1ea5t hi\u1ec7n tr\u00ean website, \u0111i\u1ec1u \u0111\u1ea7u ti\u00ean b\u1ea1n n\u00ean l\u00e0m l\u00e0 \u0111\u0103ng nh\u1eadp v\u00e0o h\u1ec7 th\u1ed1ng c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u1ee7a m\u00ecnh. Sau khi \u0111\u00e3 truy c\u1eadp th\u00e0nh c\u00f4ng, b\u1ea1n m\u1edbi c\u00f3 th\u1ec3 ti\u1ebfn h\u00e0nh c\u00e1c b\u01b0\u1edbc ki\u1ec3m tra v\u00e0 kh\u1eafc ph\u1ee5c l\u1ed7i ti\u1ebfp theo.<\/p>\n<p>T\u00f9y theo nh\u00e0 cung c\u1ea5p hosting, b\u1ea1n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c c\u1ea5p quy\u1ec1n qu\u1ea3n l\u00fd qua <a href=\"https:\/\/interdata.vn\/blog\/directadmin-la-gi\/\">DirectAdmin<\/a>, <a href=\"https:\/\/interdata.vn\/blog\/cpanel\/\">cPanel<\/a> ho\u1eb7c trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, kh\u00f4ng c\u00f3 giao di\u1ec7n qu\u1ea3n l\u00fd tr\u1ef1c quan n\u00e0o c\u1ea3.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Cach-1-Kiem-tra-thong-tin-ket-noi-trong-tep-wp-configphp\"><\/span>C\u00e1ch 1:\u00a0Ki\u1ec3m tra th\u00f4ng tin k\u1ebft n\u1ed1i trong t\u1ec7p wp-config.php<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Sau khi \u0111\u00e3 \u0111\u0103ng nh\u1eadp v\u00e0o <strong>cPanel<\/strong>, h\u00e3y \u0111i \u0111\u1ebfn m\u1ee5c <strong>Domains<\/strong> v\u00e0 ch\u1ecdn <strong>website \u0111ang g\u1eb7p l\u1ed7i<\/strong>.<\/p>\n<p>Ti\u1ebfp theo, b\u1ea1n truy c\u1eadp v\u00e0o <strong>file <code>wp-config.php<\/code><\/strong> v\u00e0 nh\u1ea5n <strong>Edit<\/strong> \u0111\u1ec3 m\u1edf n\u1ed9i dung b\u00ean trong.<\/p>\n<p>T\u1ea1i \u0111\u00e2y, b\u1ea1n c\u1ea7n ki\u1ec3m tra k\u1ef9 c\u00e1c d\u00f2ng th\u00f4ng tin c\u1ea5u h\u00ecnh nh\u01b0 sau:<\/p>\n<pre><strong>\/\/ ** MySQL settings \u2013 You can get this info from your web host ** \/\/<\/strong>\r\n\r\n<strong>\/** The name of the database for WordPress *\/<\/strong>\r\n\r\n<strong>define( \u2018DB_NAME\u2019, \u2018database_name\u2019 );<\/strong>\r\n\r\n<strong>\/** MySQL database username *\/<\/strong>\r\n\r\n<strong>define( \u2018DB_USER\u2019, \u2018username\u2019 );<\/strong>\r\n\r\n<strong>\/** MySQL database password *\/<\/strong>\r\n\r\n<strong>define( \u2018DB_PASSWORD\u2019, \u2018password );<\/strong>\r\n\r\n<strong>\/** MySQL hostname *\/<\/strong>\r\n\r\n<strong>define( \u2018DB_HOST\u2019, \u2018localhost\u2019 );<\/strong><\/pre>\n<p>Nh\u1eefng th\u00f4ng tin tr\u00ean \u0111\u00f3ng vai tr\u00f2 <strong>then ch\u1ed1t<\/strong> trong vi\u1ec7c gi\u00fap WordPress <strong>k\u1ebft n\u1ed1i v\u1edbi c\u01a1 s\u1edf d\u1eef li\u1ec7u<\/strong>.<\/p>\n<p>V\u00ec v\u1eady, b\u1ea1n c\u1ea7n ch\u1eafc ch\u1eafn r\u1eb1ng t\u1ea5t c\u1ea3 gi\u00e1 tr\u1ecb trong c\u00e1c d\u00f2ng l\u1ec7nh n\u00e0y <strong>ho\u00e0n to\u00e0n ch\u00ednh x\u00e1c<\/strong>.<\/p>\n<p>H\u00e3y m\u1edf ph\u1ea7n <strong>MySQL Database<\/strong> \u0111\u1ec3 \u0111\u1ed1i chi\u1ebfu c\u00e1c th\u00f4ng tin:<\/p>\n<ul>\n<li><strong>Database_name<\/strong><\/li>\n<li><strong>Username<\/strong><\/li>\n<li><strong>Password<\/strong><\/li>\n<\/ul>\n<p>N\u1ebfu ph\u00e1t hi\u1ec7n b\u1ea5t k\u1ef3 chi ti\u1ebft n\u00e0o kh\u00f4ng tr\u00f9ng kh\u1edbp v\u1edbi trong file <code>wp-config.php<\/code>, b\u1ea1n c\u1ea7n <strong>ch\u1ec9nh s\u1eeda l\u1ea1i cho \u0111\u00fang<\/strong> ngay l\u1eadp t\u1ee9c.<\/p>\n<p><strong>L\u01b0u \u00fd v\u1ec1 th\u00f4ng s\u1ed1 DB_HOST trong hosting:<\/strong><\/p>\n<p>Th\u00f4ng s\u1ed1 <strong><code>DB_HOST<\/code><\/strong> s\u1ebd thay \u0111\u1ed5i t\u00f9y theo <strong>g\u00f3i hosting<\/strong> b\u1ea1n \u0111ang s\u1eed d\u1ee5ng.<\/p>\n<ul>\n<li>N\u1ebfu b\u1ea1n d\u00f9ng <strong><a href=\"https:\/\/interdata.vn\/blog\/shared-hosting\/\">Shared Hosting<\/a><\/strong>, gi\u00e1 tr\u1ecb m\u1eb7c \u0111\u1ecbnh th\u01b0\u1eddng l\u00e0 <strong>\u2018localhost\u2019<\/strong>.<\/li>\n<li>V\u1edbi <a href=\"https:\/\/interdata.vn\/blog\/cac-loai-web-hosting\/\">c\u00e1c lo\u1ea1i hosting<\/a> kh\u00e1c (nh\u01b0 <a href=\"https:\/\/interdata.vn\/blog\/vps-la-gi\/\">VPS<\/a> hay Cloud), t\u00ean <strong>DB_HOST<\/strong> c\u00f3 th\u1ec3 kh\u00e1c, v\u00ec v\u1eady b\u1ea1n n\u00ean <strong>ki\u1ec3m tra th\u00f4ng tin n\u00e0y trong ph\u1ea7n qu\u1ea3n l\u00fd hosting ho\u1eb7c li\u00ean h\u1ec7 nh\u00e0 cung c\u1ea5p<\/strong> \u0111\u1ec3 x\u00e1c nh\u1eadn ch\u00ednh x\u00e1c.<\/li>\n<\/ul>\n<p><strong>T\u00f3m l\u1ea1i<\/strong>, vi\u1ec7c ki\u1ec3m tra \u0111\u00fang c\u1ea5u h\u00ecnh trong file <code>wp-config.php<\/code> l\u00e0 b\u01b0\u1edbc quan tr\u1ecdng \u0111\u1ea7u ti\u00ean gi\u00fap b\u1ea1n <strong>s\u1eeda l\u1ed7i \u201cError establishing a database connection\u201d<\/strong> nhanh ch\u00f3ng v\u00e0 hi\u1ec7u qu\u1ea3.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Cach-2-Kiem-tra-quyen-truy-cap-cua-nguoi-dung-va-co-so-du-lieu\"><\/span>C\u00e1ch 2: Ki\u1ec3m tra quy\u1ec1n truy c\u1eadp c\u1ee7a ng\u01b0\u1eddi d\u00f9ng v\u00e0 c\u01a1 s\u1edf d\u1eef li\u1ec7u<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>N\u1ebfu b\u1ea1n \u0111\u00e3 x\u00e1c minh r\u1eb1ng th\u00f4ng tin k\u1ebft n\u1ed1i gi\u1eefa MySQL Database v\u00e0 t\u1ec7p wp-config.php l\u00e0 ch\u00ednh x\u00e1c, nh\u01b0ng v\u1eabn g\u1eb7p l\u1ed7i, c\u00f3 th\u1ec3 v\u1ea5n \u0111\u1ec1 n\u1eb1m \u1edf quy\u1ec1n truy c\u1eadp c\u1ee7a ng\u01b0\u1eddi d\u00f9ng MySQL. Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y, b\u1ea1n c\u1ea7n ki\u1ec3m tra xem ng\u01b0\u1eddi d\u00f9ng c\u00f3 \u0111\u1ee7 quy\u1ec1n \u0111\u1ec3 thao t\u00e1c v\u1edbi c\u01a1 s\u1edf d\u1eef li\u1ec7u hay kh\u00f4ng.<\/p>\n<p>\u0110\u1ec3 \u0111\u1ea3m b\u1ea3o ng\u01b0\u1eddi d\u00f9ng \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh trong t\u1ec7p wp-config.php c\u00f3 \u0111\u1ee7 quy\u1ec1n truy c\u1eadp c\u01a1 s\u1edf d\u1eef li\u1ec7u, b\u1ea1n c\u1ea7n th\u1ef1c hi\u1ec7n c\u00e1c b\u01b0\u1edbc sau trong cPanel:<\/p>\n<p>Trong h\u01b0\u1edbng d\u1eabn n\u00e0y InterData s\u1ebd th\u1ef1c hi\u1ec7n m\u1eabu tr\u00ean giao di\u1ec7n cPanel c\u1ee7a InterData, giao di\u1ec7n c\u00e1c nh\u00e0 cung c\u1ea5p kh\u00e1c c\u0169ng t\u01b0\u01a1ng t\u1ef1.<\/p>\n<p><strong>B\u01b0\u1edbc 1<\/strong>: \u0110\u0103ng nh\u1eadp v\u00e0o cPanel v\u00e0 truy c\u1eadp v\u00e0o ph\u1ea7n Database c\u1ee7a MySQL \u0111\u1ec3 ki\u1ec3m tra quy\u1ec1n truy c\u1eadp c\u1ee7a ng\u01b0\u1eddi d\u00f9ng c\u01a1 s\u1edf d\u1eef li\u1ec7u.<\/p>\n<figure id=\"attachment_21854\" aria-describedby=\"caption-attachment-21854\" style=\"width: 808px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-21854\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Truy-cap-vao-phan-Database-cua-MySQL-.png\" alt=\"Truy c\u1eadp v\u00e0o ph\u1ea7n Database c\u1ee7a MySQL\u00a0\" width=\"808\" height=\"184\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Truy-cap-vao-phan-Database-cua-MySQL-.png 808w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Truy-cap-vao-phan-Database-cua-MySQL--300x68.png 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Truy-cap-vao-phan-Database-cua-MySQL--768x175.png 768w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Truy-cap-vao-phan-Database-cua-MySQL--750x171.png 750w\" sizes=\"auto, (max-width: 808px) 100vw, 808px\" \/><figcaption id=\"caption-attachment-21854\" class=\"wp-caption-text\">Truy c\u1eadp v\u00e0o ph\u1ea7n Database c\u1ee7a MySQL<\/figcaption><\/figure>\n<p><strong>B\u01b0\u1edbc 2<\/strong>: B\u1ea1n ki\u1ec3m tra quy\u1ec1n c\u1ee7a ng\u01b0\u1eddi d\u00f9ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o h\u1ecd c\u00f3 quy\u1ec1n \u0111\u1ea7y \u0111\u1ee7 v\u1edbi c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n.<\/p>\n<figure id=\"attachment_21855\" aria-describedby=\"caption-attachment-21855\" style=\"width: 1089px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-21855\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Kiem-tra-quyen-cua-nguoi-dung.png\" alt=\"Ki\u1ec3m tra quy\u1ec1n c\u1ee7a ng\u01b0\u1eddi d\u00f9ng\" width=\"1089\" height=\"255\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Kiem-tra-quyen-cua-nguoi-dung.png 1089w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Kiem-tra-quyen-cua-nguoi-dung-300x70.png 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Kiem-tra-quyen-cua-nguoi-dung-1024x240.png 1024w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Kiem-tra-quyen-cua-nguoi-dung-768x180.png 768w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Kiem-tra-quyen-cua-nguoi-dung-750x176.png 750w\" sizes=\"auto, (max-width: 1089px) 100vw, 1089px\" \/><figcaption id=\"caption-attachment-21855\" class=\"wp-caption-text\">Ki\u1ec3m tra quy\u1ec1n c\u1ee7a ng\u01b0\u1eddi d\u00f9ng<\/figcaption><\/figure>\n<p><strong>B\u01b0\u1edbc 3<\/strong>: Trong trang qu\u1ea3n l\u00fd MySQL, b\u1ea1n t\u00ecm ph\u1ea7n <strong>Add User to Database<\/strong> \u0111\u1ec3 xem ng\u01b0\u1eddi d\u00f9ng c\u00f3 quy\u1ec1n truy c\u1eadp \u0111\u1ea7y \u0111\u1ee7 hay kh\u00f4ng.<\/p>\n<figure id=\"attachment_21856\" aria-describedby=\"caption-attachment-21856\" style=\"width: 595px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-21856\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Xem-nguoi-dung-co-quyen-truy-cap-day-du-hay-khong.png\" alt=\"Xem ng\u01b0\u1eddi d\u00f9ng c\u00f3 quy\u1ec1n truy c\u1eadp \u0111\u1ea7y \u0111\u1ee7 hay kh\u00f4ng\" width=\"595\" height=\"212\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Xem-nguoi-dung-co-quyen-truy-cap-day-du-hay-khong.png 595w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Xem-nguoi-dung-co-quyen-truy-cap-day-du-hay-khong-300x107.png 300w\" sizes=\"auto, (max-width: 595px) 100vw, 595px\" \/><figcaption id=\"caption-attachment-21856\" class=\"wp-caption-text\">Xem ng\u01b0\u1eddi d\u00f9ng c\u00f3 quy\u1ec1n truy c\u1eadp \u0111\u1ea7y \u0111\u1ee7 hay kh\u00f4ng<\/figcaption><\/figure>\n<p><strong>B\u01b0\u1edbc 4<\/strong>: \u0110\u1ea3m b\u1ea3o b\u1ea1n \u0111\u00e3 ch\u1ecdn t\u1ea5t c\u1ea3 c\u00e1c quy\u1ec1n c\u1ea7n thi\u1ebft v\u00e0 nh\u1ea5n <strong>Make Changes<\/strong> \u0111\u1ec3 l\u01b0u.<\/p>\n<figure id=\"attachment_21857\" aria-describedby=\"caption-attachment-21857\" style=\"width: 759px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-21857\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Nhan-Make-Changes-de-luu.png\" alt=\"Nh\u1ea5n Make Changes \u0111\u1ec3 l\u01b0u\" width=\"759\" height=\"643\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Nhan-Make-Changes-de-luu.png 759w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Nhan-Make-Changes-de-luu-300x254.png 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Nhan-Make-Changes-de-luu-750x635.png 750w\" sizes=\"auto, (max-width: 759px) 100vw, 759px\" \/><figcaption id=\"caption-attachment-21857\" class=\"wp-caption-text\">Nh\u1ea5n Make Changes \u0111\u1ec3 l\u01b0u<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Cach-3-Kiem-tra-gia-tri-prefix-trong-tep-wp-configphp\"><\/span>C\u00e1ch 3: Ki\u1ec3m tra gi\u00e1 tr\u1ecb prefix trong t\u1ec7p wp-config.php<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>M\u1ed9t l\u00fd do kh\u00e1c c\u00f3 th\u1ec3 g\u00e2y ra l\u1ed7i k\u1ebft n\u1ed1i l\u00e0 gi\u00e1 tr\u1ecb table prefix trong t\u1ec7p wp-config.php kh\u00f4ng kh\u1edbp v\u1edbi gi\u00e1 tr\u1ecb trong c\u01a1 s\u1edf d\u1eef li\u1ec7u. V\u00ed d\u1ee5, n\u1ebfu trong t\u1ec7p c\u1ea5u h\u00ecnh b\u1ea1n \u0111\u1eb7t:<\/p>\n<p><strong>$table_prefix = &#8216;wp_&#8217;;<\/strong><\/p>\n<p>th\u00ec trong c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n c\u0169ng ph\u1ea3i s\u1eed d\u1ee5ng c\u00f9ng m\u1ed9t prefix, ch\u1eb3ng h\u1ea1n <strong>wp_<\/strong>. N\u1ebfu b\u1ea1n \u0111\u1eb7t gi\u00e1 tr\u1ecb l\u00e0 <strong>wp0l_<\/strong>, th\u00ec trong c\u01a1 s\u1edf d\u1eef li\u1ec7u c\u0169ng c\u1ea7n ph\u1ea3i kh\u1edbp v\u1edbi <strong>wp0l_<\/strong>.<\/p>\n<p>L\u01b0u \u00fd r\u1eb1ng b\u1ea1n c\u00f3 th\u1ec3 t\u00f9y \u00fd thay \u0111\u1ed5i prefix, nh\u01b0ng n\u00f3 ph\u1ea3i \u0111\u1ed3ng nh\u1ea5t gi\u1eefa t\u1ec7p c\u1ea5u h\u00ecnh v\u00e0 c\u01a1 s\u1edf d\u1eef li\u1ec7u \u0111\u1ec3 tr\u00e1nh l\u1ed7i.<\/p>\n<figure id=\"attachment_21859\" aria-describedby=\"caption-attachment-21859\" style=\"width: 253px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-21859\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Kiem-tra-gia-tri-prefix-trong-tep-wp-config.webp\" alt=\"Ki\u1ec3m tra gi\u00e1 tr\u1ecb table prefix value\" width=\"253\" height=\"384\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Kiem-tra-gia-tri-prefix-trong-tep-wp-config.webp 253w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Kiem-tra-gia-tri-prefix-trong-tep-wp-config-198x300.webp 198w\" sizes=\"auto, (max-width: 253px) 100vw, 253px\" \/><figcaption id=\"caption-attachment-21859\" class=\"wp-caption-text\">Ki\u1ec3m tra gi\u00e1 tr\u1ecb table prefix value<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Cach-4-Kiem-tra-cac-extension-MySQL-va-MySQLi-co-duoc-bat-trong-PHP-hay-khong\"><\/span>C\u00e1ch 4: Ki\u1ec3m tra c\u00e1c extension MySQL v\u00e0 MySQLi c\u00f3 \u0111\u01b0\u1ee3c b\u1eadt trong PHP hay kh\u00f4ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u1ec3 \u0111\u1ea3m b\u1ea3o MySQL ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng, b\u1ea1n c\u1ea7n ki\u1ec3m tra xem c\u00e1c extension MySQL v\u00e0 MySQLi trong <a href=\"https:\/\/interdata.vn\/blog\/php-la-gi\/\">PHP<\/a> \u0111\u00e3 \u0111\u01b0\u1ee3c b\u1eadt hay ch\u01b0a. N\u1ebfu b\u1ea1n \u0111ang s\u1eed d\u1ee5ng hosting v\u1edbi <a href=\"https:\/\/interdata.vn\/blog\/cloudlinux-la-gi\/\">CloudLinux<\/a>, b\u1ea1n s\u1ebd c\u00f3 c\u00f4ng c\u1ee5 PHP Selector, cho ph\u00e9p b\u1eadt ho\u1eb7c t\u1eaft c\u00e1c extension c\u1ee7a PHP. H\u00e3y ch\u1eafc ch\u1eafn r\u1eb1ng extension MySQL \u0111\u00e3 \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t.<\/p>\n<figure id=\"attachment_21860\" aria-describedby=\"caption-attachment-21860\" style=\"width: 813px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-21860\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Kiem-tra-cac-extension-MySQL-va-MySQLi-co-duoc-bat-trong-PHP-hay-khong.png\" alt=\"Ki\u1ec3m tra c\u00e1c extension MySQL v\u00e0 MySQLi c\u00f3 \u0111\u01b0\u1ee3c b\u1eadt trong PHP hay kh\u00f4ng\" width=\"813\" height=\"307\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Kiem-tra-cac-extension-MySQL-va-MySQLi-co-duoc-bat-trong-PHP-hay-khong.png 813w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Kiem-tra-cac-extension-MySQL-va-MySQLi-co-duoc-bat-trong-PHP-hay-khong-300x113.png 300w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Kiem-tra-cac-extension-MySQL-va-MySQLi-co-duoc-bat-trong-PHP-hay-khong-768x290.png 768w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Kiem-tra-cac-extension-MySQL-va-MySQLi-co-duoc-bat-trong-PHP-hay-khong-750x283.png 750w\" sizes=\"auto, (max-width: 813px) 100vw, 813px\" \/><figcaption id=\"caption-attachment-21860\" class=\"wp-caption-text\">Ki\u1ec3m tra c\u00e1c extension MySQL v\u00e0 MySQLi c\u00f3 \u0111\u01b0\u1ee3c b\u1eadt trong PHP hay kh\u00f4ng<\/figcaption><\/figure>\n<p>\u0110\u1ed1i v\u1edbi PHP 5, b\u1ea1n c\u1ea7n ki\u1ec3m tra xem c\u00e1c extension MySQL v\u00e0 MySQLi \u0111\u00e3 \u0111\u01b0\u1ee3c b\u1eadt.<\/p>\n<figure id=\"attachment_21861\" aria-describedby=\"caption-attachment-21861\" style=\"width: 519px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-21861\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/kiem-tra-xem-cac-extension-MySQL-va-MySQLi-da-duoc-bat.webp\" alt=\"Ki\u1ec3m tra xem c\u00e1c extension MySQL v\u00e0 MySQLi \u0111\u00e3 \u0111\u01b0\u1ee3c b\u1eadt\" width=\"519\" height=\"337\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/kiem-tra-xem-cac-extension-MySQL-va-MySQLi-da-duoc-bat.webp 519w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/kiem-tra-xem-cac-extension-MySQL-va-MySQLi-da-duoc-bat-300x195.webp 300w\" sizes=\"auto, (max-width: 519px) 100vw, 519px\" \/><figcaption id=\"caption-attachment-21861\" class=\"wp-caption-text\">Ki\u1ec3m tra xem c\u00e1c extension MySQL v\u00e0 MySQLi \u0111\u00e3 \u0111\u01b0\u1ee3c b\u1eadt<\/figcaption><\/figure>\n<figure id=\"attachment_21863\" aria-describedby=\"caption-attachment-21863\" style=\"width: 462px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-21863\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Kiem-tra-cac-extension-MySQL-va-MySQLi-da-duoc-bat.webp\" alt=\"Ki\u1ec3m tra c\u00e1c extension MySQL v\u00e0 MySQLi \u0111\u00e3 \u0111\u01b0\u1ee3c b\u1eadt\" width=\"462\" height=\"360\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Kiem-tra-cac-extension-MySQL-va-MySQLi-da-duoc-bat.webp 462w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Kiem-tra-cac-extension-MySQL-va-MySQLi-da-duoc-bat-300x234.webp 300w\" sizes=\"auto, (max-width: 462px) 100vw, 462px\" \/><figcaption id=\"caption-attachment-21863\" class=\"wp-caption-text\">Ki\u1ec3m tra c\u00e1c extension MySQL v\u00e0 MySQLi \u0111\u00e3 \u0111\u01b0\u1ee3c b\u1eadt<\/figcaption><\/figure>\n<p>V\u1edbi PHP 7.x, b\u1ea1n c\u0169ng c\u1ea7n \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c extension n\u00e0y \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t.<\/p>\n<figure id=\"attachment_21862\" aria-describedby=\"caption-attachment-21862\" style=\"width: 423px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-21862\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Dam-bao-rang-cac-extension-nay-duoc-kich-hoat.webp\" alt=\"\u0110\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c extension n\u00e0y \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t\" width=\"423\" height=\"464\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Dam-bao-rang-cac-extension-nay-duoc-kich-hoat.webp 423w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Dam-bao-rang-cac-extension-nay-duoc-kich-hoat-273x300.webp 273w\" sizes=\"auto, (max-width: 423px) 100vw, 423px\" \/><figcaption id=\"caption-attachment-21862\" class=\"wp-caption-text\">\u0110\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c extension n\u00e0y \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t<\/figcaption><\/figure>\n<figure id=\"attachment_21864\" aria-describedby=\"caption-attachment-21864\" style=\"width: 415px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-21864\" src=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Kiem-tra-cac-extension-nay-duoc-kich-hoat-chua.webp\" alt=\"Ki\u1ec3m tra c\u00e1c extension n\u00e0y \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t ch\u01b0a\" width=\"415\" height=\"431\" title=\"\" srcset=\"https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Kiem-tra-cac-extension-nay-duoc-kich-hoat-chua.webp 415w, https:\/\/interdata.vn\/blog\/wp-content\/uploads\/2024\/12\/Kiem-tra-cac-extension-nay-duoc-kich-hoat-chua-289x300.webp 289w\" sizes=\"auto, (max-width: 415px) 100vw, 415px\" \/><figcaption id=\"caption-attachment-21864\" class=\"wp-caption-text\">Ki\u1ec3m tra c\u00e1c extension n\u00e0y \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t ch\u01b0a<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Cach-5-Thu-sua-chua-co-so-du-lieu-WordPress\"><\/span>C\u00e1ch 5. Th\u1eed s\u1eeda ch\u1eefa c\u01a1 s\u1edf d\u1eef li\u1ec7u WordPress<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>WordPress t\u00edch h\u1ee3p s\u1eb5n m\u1ed9t t\u00ednh n\u0103ng t\u1ef1 \u0111\u1ed9ng s\u1eeda l\u1ed7i c\u01a1 s\u1edf d\u1eef li\u1ec7u, gi\u00fap b\u1ea1n kh\u1eafc ph\u1ee5c nhanh t\u00ecnh tr\u1ea1ng \u201cError Establishing a Database Connection\u201d m\u00e0 kh\u00f4ng c\u1ea7n can thi\u1ec7p s\u00e2u v\u00e0o <a href=\"https:\/\/interdata.vn\/blog\/source-code-la-gi\/\">m\u00e3 ngu\u1ed3n<\/a>.<\/p>\n<p>\u0110\u1ec3 b\u1eadt t\u00ednh n\u0103ng n\u00e0y, tr\u01b0\u1edbc ti\u00ean h\u00e3y truy c\u1eadp v\u00e0o file<strong> wp-config.php<\/strong> trong th\u01b0 m\u1ee5c g\u1ed1c c\u00e0i \u0111\u1eb7t WordPress c\u1ee7a b\u1ea1n.<\/p>\n<p><strong>define(&#8216;WP_ALLOW_REPAIR&#8217;, true);<\/strong><\/p>\n<p>Sau khi th\u00eam \u0111o\u1ea1n m\u00e3 c\u1ea7n thi\u1ebft, <strong>l\u01b0u l\u1ea1i thay \u0111\u1ed5i<\/strong> r\u1ed3i <strong>\u0111\u00f3ng t\u1ec7p <code>wp-config.php<\/code><\/strong>. Ti\u1ebfp theo, h\u00e3y <strong>truy c\u1eadp v\u00e0o trang qu\u1ea3n tr\u1ecb WordPress<\/strong> \u0111\u1ec3 b\u1eaft \u0111\u1ea7u qu\u00e1 tr\u00ecnh s\u1eeda l\u1ed7i.<\/p>\n<p>T\u1ea1i \u0111\u00e2y, b\u1ea1n s\u1ebd th\u1ea5y hai l\u1ef1a ch\u1ecdn:<\/p>\n<ul>\n<li><strong>Repair Database<\/strong><\/li>\n<li><strong>Repair And Optimize Database<\/strong><\/li>\n<\/ul>\n<p>H\u00e3y ch\u1ecdn <strong>t\u00f9y ch\u1ecdn ph\u00f9 h\u1ee3p<\/strong> v\u1edbi nhu c\u1ea7u c\u1ee7a b\u1ea1n, sau \u0111\u00f3 nh\u1ea5n <strong>Repair Database<\/strong> \u0111\u1ec3 kh\u1edfi \u0111\u1ed9ng qu\u00e1 tr\u00ecnh s\u1eeda ch\u1eefa.<\/p>\n<p>Khi qu\u00e1 tr\u00ecnh ho\u00e0n t\u1ea5t, \u0111\u1eebng qu\u00ean <strong>ki\u1ec3m tra l\u1ea1i website<\/strong> \u0111\u1ec3 xem <strong>l\u1ed7i \u201cError Establishing a Database Connection\u201d<\/strong> \u0111\u00e3 \u0111\u01b0\u1ee3c kh\u1eafc ph\u1ee5c hay ch\u01b0a.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Cach-6-Tao-moi-database\"><\/span>C\u00e1ch 6: T\u1ea1o m\u1edbi database<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u0110\u1ec3 <strong>t\u1ea1o m\u1ed9t c\u01a1 s\u1edf d\u1eef li\u1ec7u m\u1edbi cho WordPress<\/strong>, b\u1ea1n h\u00e3y th\u1ef1c hi\u1ec7n l\u1ea7n l\u01b0\u1ee3t c\u00e1c b\u01b0\u1edbc d\u01b0\u1edbi \u0111\u00e2y:<\/p>\n<p><strong>B\u01b0\u1edbc 1:<\/strong> \u0110\u0103ng nh\u1eadp v\u00e0o <strong>tr\u00ecnh qu\u1ea3n tr\u1ecb c\u01a1 s\u1edf d\u1eef li\u1ec7u<\/strong> m\u00e0 b\u1ea1n \u0111ang s\u1eed d\u1ee5ng.<\/p>\n<p><strong>B\u01b0\u1edbc 2:<\/strong> Trong giao di\u1ec7n qu\u1ea3n tr\u1ecb, t\u00ecm t\u00f9y ch\u1ecdn <strong>t\u1ea1o c\u01a1 s\u1edf d\u1eef li\u1ec7u m\u1edbi<\/strong>.<br \/>\nT\u1ea1i \u0111\u00e2y, b\u1ea1n c\u1ea7n \u0111i\u1ec1n c\u00e1c th\u00f4ng tin c\u01a1 b\u1ea3n nh\u01b0 <strong>t\u00ean c\u01a1 s\u1edf d\u1eef li\u1ec7u<\/strong> v\u00e0 \u0111i\u1ec1u ch\u1ec9nh <strong>m\u1ed9t s\u1ed1 thi\u1ebft l\u1eadp b\u1ed5 sung<\/strong> n\u1ebfu c\u1ea7n thi\u1ebft.<\/p>\n<p><strong>B\u01b0\u1edbc 3:<\/strong> Sau khi t\u1ea1o xong c\u01a1 s\u1edf d\u1eef li\u1ec7u, ti\u1ebfp t\u1ee5c <strong>t\u1ea1o m\u1ed9t t\u00e0i kho\u1ea3n ng\u01b0\u1eddi d\u00f9ng m\u1edbi<\/strong>, sau \u0111\u00f3 <strong>c\u1ea5p quy\u1ec1n truy c\u1eadp<\/strong> cho t\u00e0i kho\u1ea3n n\u00e0y v\u00e0o c\u01a1 s\u1edf d\u1eef li\u1ec7u v\u1eeba t\u1ea1o.<\/p>\n<p><strong>B\u01b0\u1edbc 4:<\/strong> H\u00e3y <strong>ghi ch\u00fa l\u1ea1i to\u00e0n b\u1ed9 th\u00f4ng tin<\/strong> c\u1ee7a c\u01a1 s\u1edf d\u1eef li\u1ec7u m\u1edbi, bao g\u1ed3m:<\/p>\n<ul>\n<li>T\u00ean c\u01a1 s\u1edf d\u1eef li\u1ec7u<\/li>\n<li>T\u00ean ng\u01b0\u1eddi d\u00f9ng<\/li>\n<li>M\u1eadt kh\u1ea9u<\/li>\n<\/ul>\n<p><strong>B\u01b0\u1edbc 5:<\/strong> M\u1edf file <strong><code>wp-config.php<\/code><\/strong> n\u1eb1m trong <strong>th\u01b0 m\u1ee5c g\u1ed1c c\u00e0i \u0111\u1eb7t WordPress<\/strong>.<br \/>\nThay th\u1ebf th\u00f4ng tin c\u0169 b\u1eb1ng <strong>th\u00f4ng tin c\u01a1 s\u1edf d\u1eef li\u1ec7u m\u1edbi<\/strong> \u1edf c\u00e1c bi\u1ebfn t\u01b0\u01a1ng \u1ee9ng:<\/p>\n<ul>\n<li><code>DB_NAME<\/code><\/li>\n<li><code>DB_USER<\/code><\/li>\n<li><code>DB_PASSWORD<\/code><\/li>\n<\/ul>\n<p><strong>B\u01b0\u1edbc 6:<\/strong> Cu\u1ed1i c\u00f9ng, truy c\u1eadp l\u1ea1i <strong><a href=\"https:\/\/interdata.vn\/blog\/page-la-gi\/\">trang web<\/a> WordPress<\/strong> c\u1ee7a b\u1ea1n.<\/p>\n<p>N\u1ebfu c\u00e1c th\u00f4ng tin \u0111\u01b0\u1ee3c nh\u1eadp ch\u00ednh x\u00e1c, <strong>website s\u1ebd ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng<\/strong> v\u00e0 <strong>kh\u00f4ng c\u00f2n xu\u1ea5t hi\u1ec7n th\u00f4ng b\u00e1o \u201cError establishing a database connection\u201d<\/strong> n\u1eefa.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Cach-7-Vo-hieu-hoa-plugin-WordPress-khi-gap-loi\"><\/span>C\u00e1ch 7: V\u00f4 hi\u1ec7u h\u00f3a plugin WordPress khi g\u1eb7p l\u1ed7i<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>M\u1ed9t trong nh\u1eefng nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn khi\u1ebfn WordPress b\u00e1o l\u1ed7i <strong>\u201cError Establishing a Database Connection\u201d<\/strong> l\u00e0 do xung \u0111\u1ed9t gi\u1eefa c\u00e1c <a href=\"https:\/\/interdata.vn\/blog\/plugin-la-gi\/\">plugin<\/a>. V\u00ec v\u1eady, vi\u1ec7c <strong>v\u00f4 hi\u1ec7u h\u00f3a plugin<\/strong> l\u00e0 b\u01b0\u1edbc c\u1ea7n thi\u1ebft \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh v\u00e0 x\u1eed l\u00fd v\u1ea5n \u0111\u1ec1.<\/p>\n<h4>C\u00e1ch t\u1eaft plugin trong trang qu\u1ea3n tr\u1ecb WordPress<\/h4>\n<ul>\n<li>\u0110\u1ea7u ti\u00ean, h\u00e3y <strong>\u0111\u0103ng nh\u1eadp v\u00e0o trang qu\u1ea3n tr\u1ecb WordPress<\/strong> c\u1ee7a b\u1ea1n.<\/li>\n<li>T\u1ea1i <strong>menu b\u00ean tr\u00e1i<\/strong>, ch\u1ecdn <strong>Plugins \u2192 Installed Plugins<\/strong>.<\/li>\n<li>T\u1ea1i \u0111\u00e2y, b\u1ea1n s\u1ebd th\u1ea5y danh s\u00e1ch to\u00e0n b\u1ed9 plugin \u0111\u00e3 c\u00e0i \u0111\u1eb7t tr\u00ean website.<\/li>\n<li>Ti\u1ebfp theo, <strong>t\u00ecm v\u00e0 \u0111\u1ed5i t\u00ean c\u00e1c plugin b\u1ea1n mu\u1ed1n t\u1ea1m th\u1eddi v\u00f4 hi\u1ec7u h\u00f3a<\/strong>, ch\u1eb3ng h\u1ea1n \u0111\u1ed5i t\u00ean th\u00e0nh <em>plugin-disabled<\/em>.<\/li>\n<\/ul>\n<p>Sau khi ho\u00e0n t\u1ea5t, <strong>h\u00e3y truy c\u1eadp l\u1ea1i website<\/strong> \u0111\u1ec3 ki\u1ec3m tra xem l\u1ed7i \u0111\u00e3 bi\u1ebfn m\u1ea5t hay ch\u01b0a v\u00e0 \u0111\u1ea3m b\u1ea3o trang v\u1eabn ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng.<\/p>\n<h4>C\u00e1ch v\u00f4 hi\u1ec7u h\u00f3a to\u00e0n b\u1ed9 plugin khi kh\u00f4ng th\u1ec3 truy c\u1eadp WordPress<\/h4>\n<p>N\u1ebfu b\u1ea1n kh\u00f4ng th\u1ec3 \u0111\u0103ng nh\u1eadp v\u00e0o trang qu\u1ea3n tr\u1ecb \u0111\u1ec3 t\u1eaft plugin, c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n tr\u1ef1c ti\u1ebfp qua <strong><a href=\"https:\/\/interdata.vn\/blog\/ftp-la-gi\/\">FTP<\/a> ho\u1eb7c File Manager<\/strong> tr\u00ean hosting.<\/p>\n<p>H\u00e3y truy c\u1eadp v\u00e0o th\u01b0 m\u1ee5c <strong>wp-content<\/strong> tr\u00ean m\u00e1y ch\u1ee7, sau \u0111\u00f3 <strong>\u0111\u1ed5i t\u00ean th\u01b0 m\u1ee5c \u201cplugins\u201d<\/strong> th\u00e0nh b\u1ea5t k\u1ef3 t\u00ean n\u00e0o kh\u00e1c, v\u00ed d\u1ee5 <strong>\u201cplugins-disabled\u201d<\/strong>. Thao t\u00e1c n\u00e0y s\u1ebd khi\u1ebfn <strong>to\u00e0n b\u1ed9 plugin tr\u00ean website t\u1ea1m th\u1eddi ng\u1eebng ho\u1ea1t \u0111\u1ed9ng<\/strong>.<\/p>\n<p>Cu\u1ed1i c\u00f9ng, <strong>ki\u1ec3m tra l\u1ea1i website<\/strong> \u0111\u1ec3 xem l\u1ed7i <strong>\u201cError Establishing a Database Connection\u201d<\/strong> \u0111\u00e3 \u0111\u01b0\u1ee3c kh\u1eafc ph\u1ee5c hay ch\u01b0a.<\/p>\n<p>H\u00e3y lu\u00f4n nh\u1edb sao l\u01b0u d\u1eef li\u1ec7u \u0111\u1ecbnh k\u1ef3 v\u00e0 ki\u1ec3m tra c\u00e1c y\u1ebfu t\u1ed1 tr\u00ean \u0111\u1ec3 tr\u00e1nh g\u1eb7p ph\u1ea3i c\u00e1c s\u1ef1 c\u1ed1 t\u01b0\u01a1ng t\u1ef1 trong t\u01b0\u01a1ng lai.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>L\u1ed7i &#8220;Error Establishing a Database Connection&#8221; l\u00e0 m\u1ed9t trong nh\u1eefng l\u1ed7i ph\u1ed5 bi\u1ebfn v\u00e0 kh\u00e1 kh\u00f3 ch\u1ecbu khi s\u1eed d\u1ee5ng c\u00e1c h\u1ec7 qu\u1ea3n tr\u1ecb n\u1ed9i dung nh\u01b0 WordPress. L\u1ed7i n\u00e0y th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n khi website kh\u00f4ng th\u1ec3 k\u1ebft n\u1ed1i \u0111\u1ebfn c\u01a1 s\u1edf d\u1eef li\u1ec7u MySQL, khi\u1ebfn cho website kh\u00f4ng th\u1ec3 t\u1ea3i l\u00ean ho\u1eb7c hi\u1ec3n th\u1ecb<\/p>\n","protected":false},"author":11,"featured_media":34965,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[100],"tags":[],"class_list":["post-21853","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-website"],"_links":{"self":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/21853","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/comments?post=21853"}],"version-history":[{"count":5,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/21853\/revisions"}],"predecessor-version":[{"id":40535,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/posts\/21853\/revisions\/40535"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media\/34965"}],"wp:attachment":[{"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/media?parent=21853"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/categories?post=21853"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/interdata.vn\/blog\/wp-json\/wp\/v2\/tags?post=21853"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}