{"id":178003,"date":"2024-11-08T17:23:19","date_gmt":"2024-11-08T09:23:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/178003\/"},"modified":"2024-11-08T17:23:20","modified_gmt":"2024-11-08T09:23:20","slug":"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a41284-sqlstate-hy000-er_unknown_key_cache-%e6%9c%aa%e7%9f%a5%e7%9a%84%e9%8d%b5%e7%b7%a9%e5%ad%98s","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/178003\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41284 &#8211; SQLSTATE: HY000 (ER_UNKNOWN_KEY_CACHE) \u672a\u77e5\u7684\u9375\u7de9\u5b58&#8217;%s&#8217;"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a41284-sqlstate-hy000-er_unknown_key_cache-%e6%9c%aa%e7%9f%a5%e7%9a%84%e9%8d%b5%e7%b7%a9%e5%ad%98s-BqapHHJlgl\">\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41284 &#8211; SQLSTATE: HY000 (ER_UNKNOWN_KEY_CACHE) \u672a\u77e5\u7684\u9375\u7de9\u5b58&#8217;%s&#8217;<\/h1>\n<p>\u5728\u4f7f\u7528MySQL\u6578\u64da\u5eab\u6642\uff0c\u958b\u767c\u8005\u548c\u7cfb\u7d71\u7ba1\u7406\u54e1\u53ef\u80fd\u6703\u9047\u5230\u5404\u7a2e\u932f\u8aa4\uff0c\u5176\u4e2d\u4e4b\u4e00\u5c31\u662f\u932f\u8aa4\u4ee3\u78bc1284\uff0c\u5177\u9ad4\u8868\u73fe\u70baSQLSTATE: HY000 (ER_UNKNOWN_KEY_CACHE)\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u8207\u9375\u7de9\u5b58\u7684\u914d\u7f6e\u6709\u95dc\uff0c\u7576MySQL\u7121\u6cd5\u8b58\u5225\u6307\u5b9a\u7684\u9375\u7de9\u5b58\u6642\uff0c\u5c31\u6703\u51fa\u73fe\u6b64\u932f\u8aa4\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u8a72\u932f\u8aa4\u7684\u539f\u56e0\u53ca\u5176\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 id=\"%e9%8c%af%e8%aa%a4%e5%8e%9f%e5%9b%a0%e5%88%86%e6%9e%90-BqapHHJlgl\">\u932f\u8aa4\u539f\u56e0\u5206\u6790<\/h2>\n<p>MySQL\u7684\u9375\u7de9\u5b58\uff08Key Cache\uff09\u662f\u7528\u4f86\u52a0\u901f\u5c0dMyISAM\u8868\u7684\u67e5\u8a62\u6027\u80fd\u7684\u3002\u7576\u4f60\u5728\u57f7\u884c\u67e5\u8a62\u6642\uff0c\u5982\u679c\u6307\u5b9a\u4e86\u4e00\u500b\u4e0d\u5b58\u5728\u7684\u9375\u7de9\u5b58\uff0cMySQL\u5c31\u6703\u5831\u544a\u932f\u8aa41284\u3002\u9019\u7a2e\u60c5\u6cc1\u901a\u5e38\u767c\u751f\u5728\u4ee5\u4e0b\u5e7e\u7a2e\u60c5\u6cc1\u4e0b\uff1a<\/p>\n<ul>\n<li><strong>\u9375\u7de9\u5b58\u540d\u7a31\u62fc\u5beb\u932f\u8aa4\uff1a<\/strong>\u5982\u679c\u5728\u67e5\u8a62\u4e2d\u4f7f\u7528\u4e86\u932f\u8aa4\u7684\u9375\u7de9\u5b58\u540d\u7a31\uff0cMySQL\u5c07\u7121\u6cd5\u627e\u5230\u8a72\u7de9\u5b58\u3002<\/li>\n<li><strong>\u9375\u7de9\u5b58\u672a\u6b63\u78ba\u914d\u7f6e\uff1a<\/strong>\u5728MySQL\u7684\u914d\u7f6e\u6587\u4ef6\u4e2d\uff0c\u53ef\u80fd\u672a\u6b63\u78ba\u8a2d\u7f6e\u9375\u7de9\u5b58\uff0c\u5c0e\u81f4\u7cfb\u7d71\u7121\u6cd5\u8b58\u5225\u3002<\/li>\n<li><strong>\u7248\u672c\u4e0d\u517c\u5bb9\uff1a<\/strong>\u67d0\u4e9bMySQL\u7248\u672c\u53ef\u80fd\u4e0d\u652f\u6301\u7279\u5b9a\u7684\u9375\u7de9\u5b58\u529f\u80fd\uff0c\u9019\u4e5f\u53ef\u80fd\u5c0e\u81f4\u6b64\u932f\u8aa4\u3002<\/li>\n<\/ul>\n<h2 id=\"%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%a1%88-BqapHHJlgl\">\u89e3\u6c7a\u65b9\u6848<\/h2>\n<p>\u8981\u4fee\u5fa9MySQL\u932f\u8aa41284\uff0c\u60a8\u53ef\u4ee5\u6309\u7167\u4ee5\u4e0b\u6b65\u9a5f\u9032\u884c\uff1a<\/p>\n<h3 id=\"1-%e6%aa%a2%e6%9f%a5%e9%8d%b5%e7%b7%a9%e5%ad%98%e5%90%8d%e7%a8%b1-BqapHHJlgl\">1. \u6aa2\u67e5\u9375\u7de9\u5b58\u540d\u7a31<\/h3>\n<p>\u9996\u5148\uff0c\u6aa2\u67e5\u60a8\u5728\u67e5\u8a62\u4e2d\u4f7f\u7528\u7684\u9375\u7de9\u5b58\u540d\u7a31\u662f\u5426\u6b63\u78ba\u3002\u78ba\u4fdd\u6c92\u6709\u62fc\u5beb\u932f\u8aa4\uff0c\u4e26\u4e14\u8a72\u540d\u7a31\u5728MySQL\u4e2d\u662f\u6709\u6548\u7684\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u8a9e\u53e5\u4f86\u67e5\u770b\u7576\u524d\u7684\u9375\u7de9\u5b58\u8a2d\u7f6e\uff1a<\/p>\n<pre><code>SHOW VARIABLES LIKE 'key_cache%';<\/code><\/pre>\n<p>\u9019\u5c07\u986f\u793a\u6240\u6709\u8207\u9375\u7de9\u5b58\u76f8\u95dc\u7684\u8b8a\u91cf\uff0c\u60a8\u53ef\u4ee5\u78ba\u8a8d\u6240\u4f7f\u7528\u7684\u9375\u7de9\u5b58\u540d\u7a31\u662f\u5426\u5b58\u5728\u3002<\/p>\n<h3 id=\"2-%e6%9b%b4%e6%96%b0mysql%e9%85%8d%e7%bd%ae-BqapHHJlgl\">2. \u66f4\u65b0MySQL\u914d\u7f6e<\/h3>\n<p>\u5982\u679c\u9375\u7de9\u5b58\u540d\u7a31\u6b63\u78ba\uff0c\u4f46\u4ecd\u7136\u51fa\u73fe\u932f\u8aa4\uff0c\u60a8\u53ef\u80fd\u9700\u8981\u6aa2\u67e5MySQL\u7684\u914d\u7f6e\u6587\u4ef6\uff08\u901a\u5e38\u662fmy.cnf\u6216my.ini\uff09\u3002\u78ba\u4fdd\u5728\u914d\u7f6e\u6587\u4ef6\u4e2d\u6b63\u78ba\u8a2d\u7f6e\u4e86\u9375\u7de9\u5b58\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\u914d\u7f6e\uff1a<\/p>\n<pre><code>[mysqld]\nkey_cache_size = 64M\nkey_cache_block_size = 1024<\/code><\/pre>\n<p>\u5728\u4fee\u6539\u914d\u7f6e\u6587\u4ef6\u5f8c\uff0c\u8acb\u91cd\u555fMySQL\u670d\u52d9\u4ee5\u4f7f\u66f4\u6539\u751f\u6548\u3002<\/p>\n<h3 id=\"3-%e6%aa%a2%e6%9f%a5mysql%e7%89%88%e6%9c%ac-BqapHHJlgl\">3. \u6aa2\u67e5MySQL\u7248\u672c<\/h3>\n<p>\u5982\u679c\u60a8\u4f7f\u7528\u7684\u662f\u8f03\u820a\u7684MySQL\u7248\u672c\uff0c\u5efa\u8b70\u5347\u7d1a\u5230\u6700\u65b0\u7248\u672c\u3002\u67d0\u4e9b\u7248\u672c\u53ef\u80fd\u5b58\u5728\u5df2\u77e5\u7684\u932f\u8aa4\u6216\u4e0d\u652f\u6301\u67d0\u4e9b\u529f\u80fd\uff0c\u9019\u53ef\u80fd\u6703\u5c0e\u81f4\u9375\u7de9\u5b58\u7121\u6cd5\u6b63\u5e38\u5de5\u4f5c\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u6aa2\u67e5\u7576\u524d\u7684MySQL\u7248\u672c\uff1a<\/p>\n<pre><code>SELECT VERSION();<\/code><\/pre>\n<h3 id=\"4-%e4%bd%bf%e7%94%a8%e6%ad%a3%e7%a2%ba%e7%9a%84%e6%9f%a5%e8%a9%a2%e8%aa%9e%e6%b3%95-BqapHHJlgl\">4. \u4f7f\u7528\u6b63\u78ba\u7684\u67e5\u8a62\u8a9e\u6cd5<\/h3>\n<p>\u78ba\u4fdd\u60a8\u5728\u67e5\u8a62\u4e2d\u4f7f\u7528\u4e86\u6b63\u78ba\u7684\u8a9e\u6cd5\u3002\u5982\u679c\u60a8\u5728\u67e5\u8a62\u4e2d\u4f7f\u7528\u4e86\u4e0d\u6b63\u78ba\u7684\u9078\u9805\u6216\u53c3\u6578\uff0c\u9019\u4e5f\u53ef\u80fd\u5c0e\u81f4\u932f\u8aa4\u3002\u8acb\u53c3\u8003MySQL\u7684\u5b98\u65b9\u6587\u6a94\u4ee5\u7372\u53d6\u6b63\u78ba\u7684\u67e5\u8a62\u8a9e\u6cd5\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-BqapHHJlgl\">\u7e3d\u7d50<\/h2>\n<p>MySQL\u932f\u8aa41284 &#8211; SQLSTATE: HY000 (ER_UNKNOWN_KEY_CACHE) \u901a\u5e38\u662f\u7531\u65bc\u9375\u7de9\u5b58\u540d\u7a31\u932f\u8aa4\u3001\u914d\u7f6e\u4e0d\u7576\u6216\u7248\u672c\u4e0d\u517c\u5bb9\u5f15\u8d77\u7684\u3002\u901a\u904e\u6aa2\u67e5\u9375\u7de9\u5b58\u540d\u7a31\u3001\u66f4\u65b0MySQL\u914d\u7f6e\u3001\u6aa2\u67e5\u7248\u672c\u4ee5\u53ca\u4f7f\u7528\u6b63\u78ba\u7684\u67e5\u8a62\u8a9e\u6cd5\uff0c\u60a8\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u6b64\u554f\u984c\u3002\u5c0d\u65bc\u9700\u8981\u7a69\u5b9a\u548c\u9ad8\u6548\u6578\u64da\u5eab\u670d\u52d9\u7684\u7528\u6236\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u6216 <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u65b9\u6848\u5c07\u6709\u52a9\u65bc\u63d0\u5347\u6574\u9ad4\u6027\u80fd\u548c\u53ef\u9760\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41284 (SQLSTATE: HY000)\uff0c\u89e3\u6c7a\u672a\u77e5\u7684\u9375\u7de9\u5b58\u554f\u984c\uff0c\u63d0\u5347\u6578\u64da\u5eab\u6027\u80fd\u8207\u7a69\u5b9a\u6027\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-178003","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178003","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=178003"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178003\/revisions"}],"predecessor-version":[{"id":178004,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178003\/revisions\/178004"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=178003"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=178003"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=178003"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}