{"id":160233,"date":"2024-11-03T21:23:21","date_gmt":"2024-11-03T13:23:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/160233\/"},"modified":"2024-11-03T21:23:22","modified_gmt":"2024-11-03T13:23:22","slug":"oceanbase-%e6%95%99%e7%a8%8b%ef%bc%9aoceanbase-set-variable","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/160233\/","title":{"rendered":"OceanBase \u6559\u7a0b\uff1aOceanBase SET VARIABLE"},"content":{"rendered":"<h1 id=\"oceanbase-%e6%95%99%e7%a8%8b%ef%bc%9aoceanbase-set-variable-jpluatTJpC\">OceanBase \u6559\u7a0b\uff1aOceanBase SET VARIABLE<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0cOceanBase \u4f5c\u70ba\u4e00\u500b\u9ad8\u6027\u80fd\u7684\u5206\u4f48\u5f0f\u6578\u64da\u5eab\uff0c\u8d8a\u4f86\u8d8a\u53d7\u5230\u958b\u767c\u8005\u548c\u4f01\u696d\u7684\u9752\u775e\u3002\u5b83\u4e0d\u50c5\u652f\u6301\u9ad8\u4e26\u767c\u7684\u8b80\u5beb\u64cd\u4f5c\uff0c\u9084\u5177\u5099\u826f\u597d\u7684\u64f4\u5c55\u6027\u548c\u5bb9\u932f\u80fd\u529b\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e OceanBase \u4e2d\u7684 <code>SET VARIABLE<\/code> \u547d\u4ee4\uff0c\u5e6b\u52a9\u7528\u6236\u66f4\u597d\u5730\u7406\u89e3\u548c\u4f7f\u7528\u9019\u4e00\u529f\u80fd\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af-set-variable%ef%bc%9f-jpluatTJpC\">\u4ec0\u9ebc\u662f SET VARIABLE\uff1f<\/h2>\n<p><code>SET VARIABLE<\/code> \u662f OceanBase \u4e2d\u7528\u4f86\u8a2d\u7f6e\u7cfb\u7d71\u8b8a\u91cf\u7684\u547d\u4ee4\u3002\u9019\u4e9b\u8b8a\u91cf\u53ef\u4ee5\u5f71\u97ff\u6578\u64da\u5eab\u7684\u884c\u70ba\u548c\u6027\u80fd\uff0c\u901a\u904e\u8abf\u6574\u9019\u4e9b\u8b8a\u91cf\uff0c\u7528\u6236\u53ef\u4ee5\u6839\u64da\u5177\u9ad4\u9700\u6c42\u512a\u5316\u6578\u64da\u5eab\u7684\u904b\u884c\u74b0\u5883\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8-set-variable-%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-jpluatTJpC\">\u4f7f\u7528 SET VARIABLE \u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p>\u5728 OceanBase \u4e2d\uff0c<code>SET VARIABLE<\/code> \u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>SET [GLOBAL | SESSION] variable_name = value;<\/code><\/pre>\n<ul>\n<li><strong>GLOBAL<\/strong>\uff1a\u8a2d\u7f6e\u5168\u5c40\u8b8a\u91cf\uff0c\u5f71\u97ff\u6240\u6709\u6703\u8a71\u3002<\/li>\n<li><strong>SESSION<\/strong>\uff1a\u8a2d\u7f6e\u6703\u8a71\u8b8a\u91cf\uff0c\u53ea\u5f71\u97ff\u7576\u524d\u6703\u8a71\u3002<\/li>\n<li><strong>variable_name<\/strong>\uff1a\u8981\u8a2d\u7f6e\u7684\u8b8a\u91cf\u540d\u7a31\u3002<\/li>\n<li><strong>value<\/strong>\uff1a\u8b8a\u91cf\u7684\u65b0\u503c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%b8%b8%e7%94%a8%e7%9a%84%e8%ae%8a%e9%87%8f%e7%a4%ba%e4%be%8b-jpluatTJpC\">\u5e38\u7528\u7684\u8b8a\u91cf\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684 OceanBase \u8b8a\u91cf\u53ca\u5176\u7528\u9014\uff1a<\/p>\n<ul>\n<li><code>max_connections<\/code>\uff1a\u8a2d\u7f6e\u6700\u5927\u9023\u63a5\u6578\u3002<\/li>\n<li><code>innodb_buffer_pool_size<\/code>\uff1a\u8a2d\u7f6e InnoDB \u7de9\u885d\u6c60\u7684\u5927\u5c0f\u3002<\/li>\n<li><code>query_cache_size<\/code>\uff1a\u8a2d\u7f6e\u67e5\u8a62\u7de9\u5b58\u7684\u5927\u5c0f\u3002<\/li>\n<\/ul>\n<h3 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a%e8%a8%ad%e7%bd%ae%e6%9c%80%e5%a4%a7%e9%80%a3%e6%8e%a5%e6%95%b8-jpluatTJpC\">\u793a\u4f8b\uff1a\u8a2d\u7f6e\u6700\u5927\u9023\u63a5\u6578<\/h3>\n<p>\u5047\u8a2d\u6211\u5011\u5e0c\u671b\u5c07\u6700\u5927\u9023\u63a5\u6578\u8a2d\u7f6e\u70ba 200\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code>SET GLOBAL max_connections = 200;<\/code><\/pre>\n<p>\u9019\u6a23\u8a2d\u7f6e\u5f8c\uff0c\u6240\u6709\u65b0\u5efa\u7acb\u7684\u6703\u8a71\u90fd\u5c07\u9075\u5faa\u9019\u4e00\u8a2d\u5b9a\u3002<\/p>\n<h3 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a%e8%a8%ad%e7%bd%ae%e6%9c%83%e8%a9%b1%e8%ae%8a%e9%87%8f-jpluatTJpC\">\u793a\u4f8b\uff1a\u8a2d\u7f6e\u6703\u8a71\u8b8a\u91cf<\/h3>\n<p>\u5982\u679c\u6211\u5011\u53ea\u60f3\u5728\u7576\u524d\u6703\u8a71\u4e2d\u8a2d\u7f6e\u8b8a\u91cf\uff0c\u4f8b\u5982\u8a2d\u7f6e\u67e5\u8a62\u7de9\u5b58\u5927\u5c0f\u70ba 64MB\uff0c\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n<pre><code>SET SESSION query_cache_size = 67108864;<\/code><\/pre>\n<p>\u9019\u6a23\u7684\u8a2d\u7f6e\u4e0d\u6703\u5f71\u97ff\u5176\u4ed6\u6703\u8a71\uff0c\u7576\u524d\u6703\u8a71\u7d50\u675f\u5f8c\uff0c\u8a72\u8a2d\u7f6e\u5c07\u5931\u6548\u3002<\/p>\n<h2 id=\"%e6%aa%a2%e6%9f%a5%e8%ae%8a%e9%87%8f%e7%9a%84%e7%95%b6%e5%89%8d%e5%80%bc-jpluatTJpC\">\u6aa2\u67e5\u8b8a\u91cf\u7684\u7576\u524d\u503c<\/h2>\n<p>\u7528\u6236\u53ef\u4ee5\u4f7f\u7528 <code>SHOW VARIABLES<\/code> \u547d\u4ee4\u4f86\u6aa2\u67e5\u7576\u524d\u7684\u8b8a\u91cf\u503c\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>SHOW VARIABLES LIKE 'max_connections';<\/code><\/pre>\n<p>\u9019\u5c07\u986f\u793a\u7576\u524d\u7684\u6700\u5927\u9023\u63a5\u6578\u8a2d\u7f6e\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-jpluatTJpC\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528 <code>SET VARIABLE<\/code> \u547d\u4ee4\u6642\uff0c\u9700\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li>\u67d0\u4e9b\u8b8a\u91cf\u7684\u4fee\u6539\u53ef\u80fd\u9700\u8981\u91cd\u555f\u6578\u64da\u5eab\u624d\u80fd\u751f\u6548\u3002<\/li>\n<li>\u5168\u5c40\u8b8a\u91cf\u7684\u4fee\u6539\u6703\u5f71\u97ff\u6240\u6709\u7528\u6236\uff0c\u56e0\u6b64\u5728\u8a2d\u7f6e\u6642\u9700\u8b39\u614e\u3002<\/li>\n<li>\u6703\u8a71\u8b8a\u91cf\u7684\u8a2d\u7f6e\u50c5\u5728\u7576\u524d\u6703\u8a71\u4e2d\u6709\u6548\uff0c\u9069\u5408\u81e8\u6642\u8abf\u6574\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-jpluatTJpC\">\u7e3d\u7d50<\/h2>\n<p>\u901a\u904e\u672c\u6587\u7684\u4ecb\u7d39\uff0c\u76f8\u4fe1\u8b80\u8005\u5c0d OceanBase \u7684 <code>SET VARIABLE<\/code> \u547d\u4ee4\u6709\u4e86\u66f4\u6df1\u5165\u7684\u4e86\u89e3\u3002\u9019\u4e00\u547d\u4ee4\u4e0d\u50c5\u80fd\u5e6b\u52a9\u7528\u6236\u6839\u64da\u9700\u6c42\u8abf\u6574\u6578\u64da\u5eab\u7684\u884c\u70ba\uff0c\u9084\u80fd\u5728\u6027\u80fd\u512a\u5316\u65b9\u9762\u767c\u63ee\u91cd\u8981\u4f5c\u7528\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u7684\u670d\u52d9\u5c07\u662f\u60a8\u7684\u4e0d\u4e8c\u4e4b\u9078\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u9084\u662f\u5176\u4ed6\u96f2\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Learn how to use the SET VARIABLE command in OceanBase to configure session parameters effectively. Enhance your database management skills today!<\/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-160233","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160233","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=160233"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160233\/revisions"}],"predecessor-version":[{"id":160234,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160233\/revisions\/160234"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=160233"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=160233"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=160233"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}