{"id":15589,"date":"2023-12-04T21:03:25","date_gmt":"2023-12-04T13:03:25","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=15589"},"modified":"2023-12-04T21:04:28","modified_gmt":"2023-12-04T13:04:28","slug":"oracle-zhong-sga-de-zu-cheng-bu-fen-dou-you-na-xie","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/12\/04\/oracle-zhong-sga-de-zu-cheng-bu-fen-dou-you-na-xie\/","title":{"rendered":"Oracle \u4e2d SGA \u7684\u7ec4\u6210\u90e8\u5206\u90fd\u6709\u54ea\u4e9b\uff1f"},"content":{"rendered":"

\u5728 Oracle \u4e2d\uff0cSGA\uff08System Global Area\uff09\u662f\u4e00\u4e2a\u5171\u4eab\u7684\u5185\u5b58\u533a\u57df\uff0c\u7528\u4e8e\u5b58\u50a8\u548c\u7ba1\u7406\u6570\u636e\u5e93\u5b9e\u4f8b\u7684\u91cd\u8981\u4fe1\u606f\u3002SGA \u7531\u591a\u4e2a\u7ec4\u4ef6\u7ec4\u6210\uff0c\u5176\u4e2d\u5305\u62ec\u4ee5\u4e0b\u5173\u952e\u7ec4\u4ef6\uff1a<\/p>\n

    \n
  1. \nDatabase Buffer Cache<\/strong>\uff1a<\/p>\n
      \n
    • \u7528\u4e8e\u5b58\u50a8\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u5757\uff0c\u63d0\u9ad8\u6570\u636e\u8bbf\u95ee\u7684\u6027\u80fd\u3002\u5b83\u7f13\u5b58\u4e86\u6700\u8fd1\u8bbf\u95ee\u7684\u6570\u636e\u5757\uff0c\u51cf\u5c11\u4e86\u5bf9\u78c1\u76d8\u7684\u8bbf\u95ee\u3002<\/li>\n<\/ul>\n<\/li>\n
    • \nShared Pool<\/strong>\uff1a<\/p>\n
        \n
      • \u5305\u62ec\u5171\u4eab SQL \u533a\u548c\u5171\u4eab\u6e38\u6807\u533a\u3002<\/li>\n
      • \u5171\u4eab SQL \u533a\u7f13\u5b58\u4e86 SQL \u8bed\u53e5\u548c\u5176\u6267\u884c\u8ba1\u5212\uff0c\u4ee5\u53ca\u5171\u4eab\u7684 PL\/SQL \u5305\u548c\u5b58\u50a8\u8fc7\u7a0b\u3002<\/li>\n
      • \u5171\u4eab\u6e38\u6807\u533a\u5b58\u50a8\u4e86 SQL \u8bed\u53e5\u7684\u6e38\u6807\u4fe1\u606f\uff0c\u5141\u8bb8\u591a\u4e2a\u4f1a\u8bdd\u5171\u4eab\u76f8\u540c\u7684\u6e38\u6807\u3002<\/li>\n<\/ul>\n<\/li>\n
      • \nRedo Log Buffer<\/strong>\uff1a<\/p>\n
          \n
        • \u7528\u4e8e\u5b58\u50a8\u4e8b\u52a1\u63d0\u4ea4\u65f6\u6240\u751f\u6210\u7684\u91cd\u505a\u65e5\u5fd7\u6761\u76ee\uff0c\u786e\u4fdd\u6570\u636e\u5e93\u7684\u6301\u4e45\u6027\u548c\u6062\u590d\u6027\u3002<\/li>\n<\/ul>\n<\/li>\n
        • \nLarge Pool<\/strong>\uff1a<\/p>\n
            \n
          • \u7528\u4e8e\u5b58\u50a8\u5927\u5757\u5185\u5b58\uff0c\u6bd4\u5982\u5907\u4efd\u548c\u6062\u590d\u64cd\u4f5c\u3001\u6392\u5e8f\u64cd\u4f5c\u7b49\u9700\u8981\u5927\u5185\u5b58\u5757\u7684\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<\/li>\n
          • \nJava Pool<\/strong>\uff1a<\/p>\n
              \n
            • \u7528\u4e8e\u5b58\u50a8 Java \u5bf9\u8c61\u548c Java \u6267\u884c\u65f6\u7684\u6570\u636e\u3002<\/li>\n<\/ul>\n<\/li>\n
            • \nStreams Pool<\/strong>\uff08\u5728\u7279\u5b9a\u7248\u672c\u4e2d\u53ef\u7528\uff09\uff1a<\/p>\n
                \n
              • \u7528\u4e8e\u5b58\u50a8 Oracle Streams \u6240\u9700\u8981\u7684\u4fe1\u606f\u3002<\/li>\n<\/ul>\n<\/li>\n
              • \nFixed SGA<\/strong>\uff1a<\/p>\n
                  \n
                • \u5305\u62ec\u56fa\u5b9a\u5927\u5c0f\u7684\u5185\u5b58\u533a\u57df\uff0c\u5b58\u50a8\u4e86\u56fa\u5b9a\u7684\u7ed3\u6784\u548c\u4fe1\u606f\uff0c\u5982 SGA \u7ed3\u6784\u672c\u8eab\u7684\u4fe1\u606f\u3001\u9501\u5b9a\u4fe1\u606f\u7b49\u3002<\/li>\n<\/ul>\n<\/li>\n
                • \n\u5176\u4ed6\u7ec4\u4ef6<\/strong>\uff1a<\/p>\n
                    \n
                  • \u53ef\u80fd\u8fd8\u5305\u62ec\u5176\u4ed6\u4e00\u4e9b\u7ec4\u4ef6\uff0c\u4f8b\u5982 In-Memory Column Store\uff08IM column store\uff09\u7b49\uff0c\u6839\u636e\u4e0d\u540c\u7248\u672c\u548c\u914d\u7f6e\u800c\u6709\u6240\u4e0d\u540c\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n

                    SGA \u7684\u8fd9\u4e9b\u7ec4\u4ef6\u5171\u540c\u5de5\u4f5c\uff0c\u4e3a Oracle \u6570\u636e\u5e93\u5b9e\u4f8b\u63d0\u4f9b\u4e86\u6027\u80fd\u548c\u53ef\u9760\u6027\u7684\u57fa\u7840\u652f\u6301\u3002\u6bcf\u4e2a\u7ec4\u4ef6\u90fd\u6709\u7279\u5b9a\u7684\u529f\u80fd\uff0c\u7528\u4e8e\u7ba1\u7406\u548c\u4f18\u5316\u6570\u636e\u5e93\u7684\u8fd0\u884c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

                    \u5728 Oracle \u4e2d\uff0cSGA\uff08System Global Area\uff09\u662f\u4e00\u4e2a\u5171\u4eab\u7684\u5185\u5b58\u533a\u57df\uff0c\u7528\u4e8e\u5b58\u50a8\u548c\u7ba1\u7406\u6570\u636e\u5e93 […]<\/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-15589","post","type-post","status-publish","format-standard","hentry","category-oracel"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/15589","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=15589"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/15589\/revisions"}],"predecessor-version":[{"id":15590,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/15589\/revisions\/15590"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=15589"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=15589"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=15589"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}