{"id":15839,"date":"2023-12-04T22:55:48","date_gmt":"2023-12-04T14:55:48","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=15839"},"modified":"2023-12-04T23:21:57","modified_gmt":"2023-12-04T15:21:57","slug":"oracle-zhong-ru-he-zhong-gou-suo-yin-bu-zhou-shi","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/12\/04\/oracle-zhong-ru-he-zhong-gou-suo-yin-bu-zhou-shi\/","title":{"rendered":"Oracle \u4e2d\u5982\u4f55\u91cd\u6784\u7d22\u5f15\uff0c\u6b65\u9aa4\u662f\uff1f"},"content":{"rendered":"<p>\u91cd\u6784\u7d22\u5f15\u662f\u6570\u636e\u5e93\u6027\u80fd\u4f18\u5316\u7684\u4e00\u90e8\u5206\uff0c\u901a\u8fc7\u91cd\u65b0\u7ec4\u7ec7\u6216\u91cd\u65b0\u521b\u5efa\u7d22\u5f15\u6765\u6539\u5584\u67e5\u8be2\u6027\u80fd\u3002\u4ee5\u4e0b\u662f\u5728 Oracle \u6570\u636e\u5e93\u4e2d\u91cd\u6784\u7d22\u5f15\u7684\u4e00\u822c\u6b65\u9aa4\uff1a<\/p>\n<ol>\n<li><strong>\u6536\u96c6\u7d22\u5f15\u4fe1\u606f\uff1a<\/strong>\n<ul>\n<li>\u5728\u8fdb\u884c\u7d22\u5f15\u91cd\u6784\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u6536\u96c6\u6709\u5173\u5f53\u524d\u7d22\u5f15\u7684\u4fe1\u606f\uff0c\u5305\u62ec\u7d22\u5f15\u7684\u4f7f\u7528\u60c5\u51b5\u3001\u788e\u7247\u60c5\u51b5\u3001\u5b58\u50a8\u7edf\u8ba1\u4fe1\u606f\u7b49\u3002<\/li>\n<\/ul>\n<pre><code class=\"language-sql  line-numbers\">-- \u67e5\u8be2\u7d22\u5f15\u7684\u4f7f\u7528\u60c5\u51b5\nSELECT * FROM USER_INDEXES WHERE TABLE_NAME = 'your_table';\n\n-- \u67e5\u8be2\u7d22\u5f15\u788e\u7247\u60c5\u51b5\nSELECT * FROM USER_INDEXES WHERE TABLE_NAME = 'your_table';\n<\/code><\/pre>\n<\/li>\n<li><strong>\u8bc4\u4f30\u7d22\u5f15\u6027\u80fd\uff1a<\/strong>\n<ul>\n<li>\u4f7f\u7528\u6570\u636e\u5e93\u6027\u80fd\u76d1\u63a7\u5de5\u5177\u6216\u67e5\u8be2\u6267\u884c\u8ba1\u5212\uff0c\u8bc4\u4f30\u5f53\u524d\u7d22\u5f15\u7684\u6027\u80fd\u3002\u786e\u5b9a\u54ea\u4e9b\u7d22\u5f15\u53ef\u80fd\u9700\u8981\u91cd\u6784\u4ee5\u63d0\u9ad8\u67e5\u8be2\u6027\u80fd\u3002<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u9009\u62e9\u7d22\u5f15\u91cd\u6784\u65b9\u5f0f\uff1a<\/strong>\n<ul>\n<li>\u6839\u636e\u8bc4\u4f30\u7ed3\u679c\uff0c\u9009\u62e9\u9002\u5f53\u7684\u7d22\u5f15\u91cd\u6784\u65b9\u5f0f\uff0c\u53ef\u80fd\u5305\u62ec\u91cd\u65b0\u6784\u5efa\u7d22\u5f15\u3001\u91cd\u7ec4\u7d22\u5f15\u3001\u6216\u8005\u5220\u9664\u5e76\u91cd\u65b0\u521b\u5efa\u7d22\u5f15\u3002<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u91cd\u65b0\u6784\u5efa\u7d22\u5f15\uff1a<\/strong>\n<ul>\n<li>\u5bf9\u4e8e\u9700\u8981\u91cd\u65b0\u6784\u5efa\u7684\u7d22\u5f15\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>ALTER INDEX<\/code> \u8bed\u53e5\u8fdb\u884c\u91cd\u5efa\u3002\u91cd\u5efa\u7d22\u5f15\u4f1a\u5220\u9664\u73b0\u6709\u7d22\u5f15\u5e76\u91cd\u65b0\u521b\u5efa\uff0c\u8fd9\u6709\u52a9\u4e8e\u6d88\u9664\u7d22\u5f15\u788e\u7247\uff0c\u63d0\u9ad8\u7d22\u5f15\u6027\u80fd\u3002<\/li>\n<\/ul>\n<pre><code class=\"language-sql  line-numbers\">-- \u91cd\u65b0\u6784\u5efa\u7d22\u5f15\nALTER INDEX your_index_name REBUILD;\n<\/code><\/pre>\n<\/li>\n<li><strong>\u91cd\u7ec4\u7d22\u5f15\uff1a<\/strong>\n<ul>\n<li>\u5bf9\u4e8e\u788e\u7247\u8f83\u591a\u7684\u7d22\u5f15\uff0c\u53ef\u4ee5\u8003\u8651\u4f7f\u7528 <code>ALTER INDEX...COALESCE<\/code> \u8fdb\u884c\u7d22\u5f15\u91cd\u7ec4\u3002\u8fd9\u4f1a\u51cf\u5c11\u7d22\u5f15\u788e\u7247\uff0c\u63d0\u9ad8\u7d22\u5f15\u7684\u6027\u80fd\u3002<\/li>\n<\/ul>\n<pre><code class=\"language-sql  line-numbers\">-- \u91cd\u7ec4\u7d22\u5f15\nALTER INDEX your_index_name COALESCE;\n<\/code><\/pre>\n<\/li>\n<li><strong>\u5220\u9664\u5e76\u91cd\u65b0\u521b\u5efa\u7d22\u5f15\uff1a<\/strong>\n<ul>\n<li>\u5bf9\u4e8e\u4e00\u4e9b\u60c5\u51b5\uff0c\u53ef\u80fd\u9700\u8981\u5220\u9664\u73b0\u6709\u7684\u7d22\u5f15\uff0c\u7136\u540e\u91cd\u65b0\u521b\u5efa\u3002\u8fd9\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u5b8c\u6210\uff1a<\/li>\n<\/ul>\n<pre><code class=\"language-sql  line-numbers\">-- \u5220\u9664\u7d22\u5f15\nDROP INDEX your_index_name;\n\n-- \u91cd\u65b0\u521b\u5efa\u7d22\u5f15\nCREATE INDEX your_index_name ON your_table(your_columns);\n<\/code><\/pre>\n<\/li>\n<li><strong>\u66f4\u65b0\u7edf\u8ba1\u4fe1\u606f\uff1a<\/strong>\n<ul>\n<li>\u5728\u5b8c\u6210\u7d22\u5f15\u91cd\u6784\u540e\uff0c\u53ca\u65f6\u66f4\u65b0\u7edf\u8ba1\u4fe1\u606f\uff0c\u4ee5\u786e\u4fdd\u4f18\u5316\u5668\u80fd\u591f\u5236\u5b9a\u66f4\u597d\u7684\u6267\u884c\u8ba1\u5212\u3002<\/li>\n<\/ul>\n<pre><code class=\"language-sql  line-numbers\">-- \u66f4\u65b0\u7edf\u8ba1\u4fe1\u606f\nEXEC DBMS_STATS.GATHER_TABLE_STATS('your_schema', 'your_table');\n<\/code><\/pre>\n<\/li>\n<li><strong>\u6027\u80fd\u6d4b\u8bd5\u548c\u76d1\u63a7\uff1a<\/strong>\n<ul>\n<li>\u5b8c\u6210\u7d22\u5f15\u91cd\u6784\u540e\uff0c\u8fdb\u884c\u6027\u80fd\u6d4b\u8bd5\uff0c\u786e\u4fdd\u67e5\u8be2\u6027\u80fd\u5f97\u5230\u63d0\u5347\u3002\u6301\u7eed\u76d1\u63a7\u6570\u636e\u5e93\u6027\u80fd\uff0c\u968f\u65f6\u8c03\u6574\u7d22\u5f15\u7b56\u7565\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p>\u5728\u8fdb\u884c\u7d22\u5f15\u91cd\u6784\u65f6\uff0c\u5efa\u8bae\u5728\u975e\u751f\u4ea7\u73af\u5883\u4e2d\u9996\u5148\u8fdb\u884c\u6d4b\u8bd5\uff0c\u786e\u4fdd\u6ca1\u6709\u8d1f\u9762\u5f71\u54cd\u3002\u6b64\u5916\uff0c\u6839\u636e\u6570\u636e\u5e93\u7248\u672c\u548c\u5177\u4f53\u60c5\u51b5\uff0c\u53ef\u80fd\u9700\u8981\u989d\u5916\u7684\u64cd\u4f5c\u548c\u6ce8\u610f\u4e8b\u9879\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u91cd\u6784\u7d22\u5f15\u662f\u6570\u636e\u5e93\u6027\u80fd\u4f18\u5316\u7684\u4e00\u90e8\u5206\uff0c\u901a\u8fc7\u91cd\u65b0\u7ec4\u7ec7\u6216\u91cd\u65b0\u521b\u5efa\u7d22\u5f15\u6765\u6539\u5584\u67e5\u8be2\u6027\u80fd\u3002\u4ee5\u4e0b\u662f\u5728 Oracle \u6570\u636e\u5e93\u4e2d\u91cd [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[120],"tags":[],"class_list":["post-15839","post","type-post","status-publish","format-standard","hentry","category-oracel"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/15839","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=15839"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/15839\/revisions"}],"predecessor-version":[{"id":15840,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/15839\/revisions\/15840"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=15839"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=15839"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=15839"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}