{"id":15887,"date":"2023-12-04T23:23:27","date_gmt":"2023-12-04T15:23:27","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=15887"},"modified":"2023-12-04T23:43:12","modified_gmt":"2023-12-04T15:43:12","slug":"oracle-zhong-ru-he-zeng-jiabuffer-cache-de-ming-zh","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/12\/04\/oracle-zhong-ru-he-zeng-jiabuffer-cache-de-ming-zh\/","title":{"rendered":"Oracle \u4e2d\u5982\u4f55\u589e\u52a0buffer cache \u7684\u547d\u4e2d\u7387\uff1f"},"content":{"rendered":"

\u8981\u589e\u52a0 Oracle \u6570\u636e\u5e93 Buffer Cache \u7684\u547d\u4e2d\u7387\uff0c\u53ef\u4ee5\u8003\u8651\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762\uff1a<\/p>\n

    \n
  1. \n\u9002\u5f53\u914d\u7f6e\u5185\u5b58\uff1a<\/strong><\/p>\n
      \n
    • \u786e\u4fdd\u6570\u636e\u5e93\u670d\u52a1\u5668\u5177\u6709\u8db3\u591f\u7684\u7269\u7406\u5185\u5b58\u3002Oracle \u6570\u636e\u5e93\u7684 Buffer Cache \u7684\u5927\u5c0f\u53d7 SGA\uff08System Global Area\uff09\u7684\u5f71\u54cd\uff0c\u5206\u914d\u8db3\u591f\u7684\u5185\u5b58\u7ed9 SGA\uff0c\u7279\u522b\u662f\u7ed9 Buffer Cache\u3002<\/li>\n<\/ul>\n<\/li>\n
    • \n\u5408\u7406\u8bbe\u7f6e\u7f13\u5b58\u5927\u5c0f\uff1a<\/strong><\/p>\n
        \n
      • \u76d1\u89c6\u5e76\u8c03\u6574 Buffer Cache \u7684\u5927\u5c0f\u3002\u786e\u4fdd\u4e3a Buffer Cache \u5206\u914d\u8db3\u591f\u7684\u5185\u5b58\uff0c\u4f46\u4e0d\u8981\u8fc7\u5206\u5360\u7528\u7cfb\u7edf\u5185\u5b58\u3002<\/li>\n<\/ul>\n<\/li>\n
      • \n\u4f7f\u7528\u81ea\u52a8\u5171\u4eab\u5185\u5b58\u7ba1\u7406\uff08ASMM\uff09\uff1a<\/strong><\/p>\n
          \n
        • \u5728 Oracle \u6570\u636e\u5e93\u4e2d\uff0c\u53ef\u4ee5\u542f\u7528\u81ea\u52a8\u5171\u4eab\u5185\u5b58\u7ba1\u7406\u6765\u81ea\u52a8\u8c03\u6574 SGA \u7ec4\u4ef6\u7684\u5927\u5c0f\uff0c\u5305\u62ec Buffer Cache\u3002<\/li>\n<\/ul>\n<\/li>\n
        • \n\u5206\u6790\u5e76\u4f18\u5316 SQL \u67e5\u8be2\uff1a<\/strong><\/p>\n
            \n
          • \u901a\u8fc7\u5206\u6790 SQL \u67e5\u8be2\u7684\u6267\u884c\u8ba1\u5212\uff0c\u4f18\u5316\u67e5\u8be2\u8bed\u53e5\uff0c\u4ee5\u51cf\u5c11\u4e0d\u5fc5\u8981\u7684 I\/O \u64cd\u4f5c\uff0c\u4ece\u800c\u63d0\u9ad8 Buffer Cache \u7684\u547d\u4e2d\u7387\u3002<\/li>\n<\/ul>\n<\/li>\n
          • \n\u8003\u8651\u4f7f\u7528 KEEP \u7f13\u5b58\u6c60\uff1a<\/strong><\/p>\n
              \n
            • \u5bf9\u4e8e\u9891\u7e41\u8bbf\u95ee\u7684\u8868\u6216\u7d22\u5f15\uff0c\u53ef\u4ee5\u8003\u8651\u5c06\u5b83\u4eec\u653e\u5165 KEEP \u7f13\u5b58\u6c60\u4e2d\uff0c\u8fd9\u6837\u53ef\u4ee5\u589e\u52a0\u5b83\u4eec\u5728 Buffer Cache \u4e2d\u7684\u9a7b\u7559\u65f6\u95f4\u3002<\/li>\n<\/ul>\n<\/li>\n
            • \n\u76d1\u89c6\u6027\u80fd\u548c\u7f13\u5b58\u7edf\u8ba1\uff1a<\/strong><\/p>\n
                \n
              • \u4f7f\u7528 Oracle \u7684\u6027\u80fd\u76d1\u89c6\u5de5\u5177\uff08\u5982 AWR \u62a5\u544a\u3001ASH \u8868\u7b49\uff09\u6765\u76d1\u89c6\u6570\u636e\u5e93\u6027\u80fd\uff0c\u7279\u522b\u662f Buffer Cache \u7684\u547d\u4e2d\u7387\u548c\u6027\u80fd\u7edf\u8ba1\u3002<\/li>\n<\/ul>\n<\/li>\n
              • \n\u5b9a\u671f\u5206\u6790\u5e76\u8c03\u6574\uff1a<\/strong><\/p>\n
                  \n
                • \u5b9a\u671f\u5206\u6790\u6570\u636e\u5e93\u6027\u80fd\uff0c\u6839\u636e\u5b9e\u9645\u60c5\u51b5\u8c03\u6574 Buffer Cache \u7684\u5927\u5c0f\u548c\u5176\u4ed6 SGA \u7ec4\u4ef6\u7684\u914d\u7f6e\u3002<\/li>\n<\/ul>\n<\/li>\n
                • \n\u4f7f\u7528\u5408\u9002\u7684\u5b58\u50a8\u8bbe\u5907\uff1a<\/strong><\/p>\n
                    \n
                  • \u5728\u786c\u4ef6\u5c42\u9762\uff0c\u9009\u62e9\u9ad8\u6027\u80fd\u7684\u5b58\u50a8\u8bbe\u5907\uff0c\u5982\u5feb\u901f\u7684\u78c1\u76d8\u6216\u56fa\u6001\u786c\u76d8\uff08SSD\uff09\uff0c\u4ee5\u63d0\u9ad8 I\/O \u6027\u80fd\uff0c\u4ece\u800c\u5f71\u54cd Buffer Cache \u547d\u4e2d\u7387\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n

                    \u901a\u8fc7\u7efc\u5408\u8003\u8651\u8fd9\u4e9b\u56e0\u7d20\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u589e\u52a0 Buffer Cache \u7684\u547d\u4e2d\u7387\uff0c\u63d0\u9ad8\u6570\u636e\u5e93\u6027\u80fd\u3002\u5728\u5b9e\u9645\u573a\u666f\u4e2d\uff0c\u9700\u8981\u6839\u636e\u5177\u4f53\u7684\u4e1a\u52a1\u9700\u6c42\u548c\u6027\u80fd\u76d1\u6d4b\u7ed3\u679c\u6765\u8c03\u6574\u914d\u7f6e\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

                    \u8981\u589e\u52a0 Oracle \u6570\u636e\u5e93 Buffer Cache \u7684\u547d\u4e2d\u7387\uff0c\u53ef\u4ee5\u8003\u8651\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762\uff1a \u9002\u5f53\u914d\u7f6e\u5185\u5b58\uff1a \u786e\u4fdd […]<\/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-15887","post","type-post","status-publish","format-standard","hentry","category-oracel"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/15887","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=15887"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/15887\/revisions"}],"predecessor-version":[{"id":15888,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/15887\/revisions\/15888"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=15887"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=15887"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=15887"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}