{"id":15867,"date":"2023-12-04T23:25:39","date_gmt":"2023-12-04T15:25:39","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=15867"},"modified":"2023-12-04T23:36:50","modified_gmt":"2023-12-04T15:36:50","slug":"oracle-zhong-ru-he-shi-xian-shu-ju-ku-de-you-hua-n","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/12\/04\/oracle-zhong-ru-he-shi-xian-shu-ju-ku-de-you-hua-n\/","title":{"rendered":"Oracle \u4e2d\u5982\u4f55\u5b9e\u73b0\u6570\u636e\u5e93\u7684\u4f18\u5316\uff0c\u4f60\u662f\u5982\u4f55\u7406\u89e3\u7684\uff1f"},"content":{"rendered":"

\u5728 Oracle \u6570\u636e\u5e93\u4e2d\uff0c\u5b9e\u73b0\u6570\u636e\u5e93\u7684\u4f18\u5316\u662f\u4e00\u4e2a\u590d\u6742\u800c\u5173\u952e\u7684\u4efb\u52a1\uff0c\u65e8\u5728\u63d0\u9ad8\u6570\u636e\u5e93\u7684\u6027\u80fd\u3001\u54cd\u5e94\u65f6\u95f4\u548c\u8d44\u6e90\u5229\u7528\u7387\u3002\u4f18\u5316\u6570\u636e\u5e93\u901a\u5e38\u6d89\u53ca\u5230\u591a\u4e2a\u65b9\u9762\uff0c\u5305\u62ec\u67e5\u8be2\u4f18\u5316\u3001\u7d22\u5f15\u8bbe\u8ba1\u3001\u7edf\u8ba1\u4fe1\u606f\u7684\u7ef4\u62a4\u3001\u786c\u4ef6\u8c03\u6574\u7b49\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u89c1\u7684\u6570\u636e\u5e93\u4f18\u5316\u65b9\u6cd5\uff1a<\/p>\n

    \n
  1. \n\u67e5\u8be2\u4f18\u5316\uff1a<\/strong><\/p>\n
      \n
    • \u901a\u8fc7\u5206\u6790\u548c\u4f18\u5316 SQL \u67e5\u8be2\u8bed\u53e5\uff0c\u786e\u4fdd\u5b83\u4eec\u80fd\u591f\u4ee5\u6700\u6709\u6548\u7684\u65b9\u5f0f\u6267\u884c\u3002<\/li>\n
    • \u4f7f\u7528\u5408\u9002\u7684\u8fde\u63a5\u65b9\u5f0f\uff08INNER JOIN\u3001OUTER JOIN\uff09\u3002<\/li>\n
    • \u907f\u514d\u4f7f\u7528\u4e0d\u5fc5\u8981\u7684\u5b50\u67e5\u8be2\uff0c\u4f18\u5148\u9009\u62e9\u8054\u63a5\u64cd\u4f5c\u3002<\/li>\n
    • \u8003\u8651\u4f7f\u7528 EXISTS \u66ff\u4ee3 IN\uff0c\u4f7f\u7528 UNION \u66ff\u4ee3 OR\u3002<\/li>\n<\/ul>\n<\/li>\n
    • \n\u7d22\u5f15\u8bbe\u8ba1\uff1a<\/strong><\/p>\n
        \n
      • \u5728\u7ecf\u5e38\u7528\u4e8e\u68c0\u7d22\u548c\u8fc7\u6ee4\u7684\u5217\u4e0a\u521b\u5efa\u7d22\u5f15\uff0c\u4f46\u907f\u514d\u8fc7\u591a\u7684\u7d22\u5f15\uff0c\u56e0\u4e3a\u8fc7\u591a\u7684\u7d22\u5f15\u53ef\u80fd\u5bfc\u81f4\u7ef4\u62a4\u6210\u672c\u589e\u52a0\u3002<\/li>\n
      • \u4f18\u5316\u590d\u5408\u7d22\u5f15\uff0c\u786e\u4fdd\u7d22\u5f15\u7684\u987a\u5e8f\u548c\u67e5\u8be2\u6761\u4ef6\u5339\u914d\u3002<\/li>\n
      • \u5b9a\u671f\u91cd\u65b0\u6784\u5efa\u6216\u91cd\u65b0\u7ec4\u7ec7\u7d22\u5f15\uff0c\u4ee5\u4fdd\u6301\u5176\u6027\u80fd\u3002<\/li>\n<\/ul>\n<\/li>\n
      • \n\u7edf\u8ba1\u4fe1\u606f\u7684\u7ef4\u62a4\uff1a<\/strong><\/p>\n
          \n
        • \u7ef4\u62a4\u8868\u548c\u7d22\u5f15\u7684\u7edf\u8ba1\u4fe1\u606f\uff0c\u4ee5\u5e2e\u52a9\u4f18\u5316\u67e5\u8be2\u6267\u884c\u8ba1\u5212\u3002<\/li>\n
        • \u4f7f\u7528\u6536\u96c6\u7edf\u8ba1\u4fe1\u606f\u7684\u4efb\u52a1\uff08\u4f8b\u5982\uff0cDBMS_STATS \u5305\uff09\u4ee5\u4fdd\u6301\u7edf\u8ba1\u4fe1\u606f\u7684\u6700\u65b0\u72b6\u6001\u3002<\/li>\n<\/ul>\n<\/li>\n
        • \n\u786c\u4ef6\u8c03\u6574\uff1a<\/strong><\/p>\n
            \n
          • \u786e\u4fdd\u6570\u636e\u5e93\u670d\u52a1\u5668\u5177\u6709\u8db3\u591f\u7684\u5185\u5b58\uff0c\u4ee5\u907f\u514d\u9891\u7e41\u7684\u78c1\u76d8 I\/O \u64cd\u4f5c\u3002<\/li>\n
          • \u914d\u7f6e\u5408\u7406\u7684\u786c\u4ef6\u53c2\u6570\uff0c\u5982\u78c1\u76d8\u3001CPU\u3001\u7f51\u7edc\u5e26\u5bbd\u7b49\u3002<\/li>\n<\/ul>\n<\/li>\n
          • \n\u5408\u7406\u7684\u6570\u636e\u5e93\u8bbe\u8ba1\uff1a<\/strong><\/p>\n
              \n
            • \u89c4\u8303\u5316\u6570\u636e\u5e93\u8bbe\u8ba1\uff0c\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u5197\u4f59\u3002<\/li>\n
            • \u4f7f\u7528\u5408\u9002\u7684\u6570\u636e\u7c7b\u578b\uff0c\u4ee5\u51cf\u5c0f\u5b58\u50a8\u7a7a\u95f4\u548c\u63d0\u9ad8\u67e5\u8be2\u6027\u80fd\u3002<\/li>\n
            • \u907f\u514d\u5728\u6570\u636e\u5e93\u4e2d\u5b58\u50a8\u5927\u578b\u4e8c\u8fdb\u5236\u5bf9\u8c61\uff08BLOB\uff09\u7b49\u590d\u6742\u6570\u636e\u7c7b\u578b\uff0c\u9664\u975e\u5fc5\u8981\u3002<\/li>\n<\/ul>\n<\/li>\n
            • \n\u9002\u5f53\u7684\u7f13\u5b58\u7ba1\u7406\uff1a<\/strong><\/p>\n
                \n
              • \u4f7f\u7528\u6570\u636e\u5e93\u7f13\u5b58\uff08Buffer Cache\uff09\u548c\u7ed3\u679c\u96c6\u7f13\u5b58\uff08Result Cache\uff09\u4ee5\u63d0\u9ad8\u67e5\u8be2\u6027\u80fd\u3002<\/li>\n
              • \u4f7f\u7528\u9002\u5f53\u7684\u6570\u636e\u5e93\u7f13\u5b58\u5927\u5c0f\u914d\u7f6e\u3002<\/li>\n<\/ul>\n<\/li>\n
              • \nSQL \u4f18\u5316\u5de5\u5177\uff1a<\/strong><\/p>\n
                  \n
                • \u4f7f\u7528 Oracle \u63d0\u4f9b\u7684 SQL \u4f18\u5316\u5de5\u5177\uff0c\u5982 SQL Tuning Advisor\uff0c\u4ee5\u5206\u6790\u548c\u6539\u8fdb SQL \u67e5\u8be2\u6027\u80fd\u3002<\/li>\n<\/ul>\n<\/li>\n
                • \n\u5206\u533a\u8868\uff1a<\/strong><\/p>\n
                    \n
                  • \u5728\u5927\u578b\u8868\u4e0a\u4f7f\u7528\u5206\u533a\uff0c\u4ee5\u4fbf\u66f4\u9ad8\u6548\u5730\u7ba1\u7406\u548c\u67e5\u8be2\u6570\u636e\u3002<\/li>\n<\/ul>\n<\/li>\n
                  • \n\u5408\u7406\u7684\u5e76\u53d1\u63a7\u5236\uff1a<\/strong><\/p>\n
                      \n
                    • \u4f7f\u7528\u9002\u5f53\u7684\u5e76\u53d1\u63a7\u5236\u673a\u5236\uff0c\u5982\u4e8b\u52a1\u9694\u79bb\u7ea7\u522b\uff0c\u4ee5\u786e\u4fdd\u6570\u636e\u7684\u4e00\u81f4\u6027\u548c\u5e76\u53d1\u6027\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n

                      \u6570\u636e\u5e93\u4f18\u5316\u662f\u4e00\u4e2a\u52a8\u6001\u7684\u8fc7\u7a0b\uff0c\u9700\u8981\u4e0d\u65ad\u5730\u76d1\u63a7\u6570\u636e\u5e93\u7684\u6027\u80fd\uff0c\u53ca\u65f6\u8bc6\u522b\u5e76\u89e3\u51b3\u6f5c\u5728\u7684\u6027\u80fd\u95ee\u9898\u3002\u901a\u8fc7\u7efc\u5408\u8003\u8651\u67e5\u8be2\u3001\u7d22\u5f15\u3001\u7edf\u8ba1\u4fe1\u606f\u3001\u786c\u4ef6\u548c\u6570\u636e\u5e93\u8bbe\u8ba1\u7b49\u65b9\u9762\u7684\u4f18\u5316\u7b56\u7565\uff0c\u53ef\u4ee5\u63d0\u9ad8 Oracle \u6570\u636e\u5e93\u7684\u6027\u80fd\u548c\u7a33\u5b9a\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

                      \u5728 Oracle \u6570\u636e\u5e93\u4e2d\uff0c\u5b9e\u73b0\u6570\u636e\u5e93\u7684\u4f18\u5316\u662f\u4e00\u4e2a\u590d\u6742\u800c\u5173\u952e\u7684\u4efb\u52a1\uff0c\u65e8\u5728\u63d0\u9ad8\u6570\u636e\u5e93\u7684\u6027\u80fd\u3001\u54cd\u5e94\u65f6\u95f4\u548c\u8d44\u6e90\u5229\u7528\u7387 […]<\/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-15867","post","type-post","status-publish","format-standard","hentry","category-oracel"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/15867","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=15867"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/15867\/revisions"}],"predecessor-version":[{"id":15868,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/15867\/revisions\/15868"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=15867"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=15867"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=15867"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}