{"id":95470,"date":"2024-10-20T01:19:17","date_gmt":"2024-10-19T17:19:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/95470\/"},"modified":"2024-10-20T01:19:18","modified_gmt":"2024-10-19T17:19:18","slug":"oracle%e6%95%b8%e6%93%9a%e5%ba%abconsistent-gets%e4%bd%bf%e7%94%a8%e7%9a%84%e7%89%b9%e4%be%8b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/95470\/","title":{"rendered":"Oracle\u6578\u64da\u5eabconsistent gets\u4f7f\u7528\u7684\u7279\u4f8b"},"content":{"rendered":"<h1 id=\"oracle%e6%95%b8%e6%93%9a%e5%ba%abconsistent-gets%e4%bd%bf%e7%94%a8%e7%9a%84%e7%89%b9%e4%be%8b-NoQuciryPR\">Oracle\u6578\u64da\u5eabconsistent gets\u4f7f\u7528\u7684\u7279\u4f8b<\/h1>\n<p>\u5728Oracle\u6578\u64da\u5eab\u4e2d\uff0cconsistent gets\u662f\u4e00\u500b\u91cd\u8981\u7684\u6027\u80fd\u6307\u6a19\uff0c\u7279\u5225\u662f\u5728\u67e5\u8a62\u512a\u5316\u548c\u6578\u64da\u5eab\u6027\u80fd\u8abf\u6574\u65b9\u9762\u3002\u9019\u500b\u6307\u6a19\u53cd\u6620\u4e86\u5728\u67e5\u8a62\u904e\u7a0b\u4e2d\uff0c\u6578\u64da\u5eab\u9700\u8981\u5f9e\u7de9\u5b58\u4e2d\u7372\u53d6\u4e00\u81f4\u6027\u6578\u64da\u7684\u6b21\u6578\u3002\u672c\u6587\u5c07\u63a2\u8a0econsistent gets\u7684\u6982\u5ff5\u3001\u5176\u5728\u7279\u5b9a\u60c5\u6cc1\u4e0b\u7684\u4f7f\u7528\uff0c\u4ee5\u53ca\u5982\u4f55\u901a\u904e\u512a\u5316\u67e5\u8a62\u4f86\u63d0\u9ad8\u6578\u64da\u5eab\u6027\u80fd\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afconsistent-gets%ef%bc%9f-NoQuciryPR\">\u4ec0\u9ebc\u662fConsistent Gets\uff1f<\/h2>\n<p>Consistent gets\u662fOracle\u6578\u64da\u5eab\u7528\u4f86\u8861\u91cf\u5728\u67e5\u8a62\u904e\u7a0b\u4e2d\uff0c\u5f9e\u7de9\u5b58\u4e2d\u7372\u53d6\u4e00\u81f4\u6027\u6578\u64da\u7684\u6b21\u6578\u3002\u7576\u4e00\u500b\u67e5\u8a62\u9700\u8981\u8a2a\u554f\u67d0\u500b\u6578\u64da\u584a\u6642\uff0cOracle\u6703\u6aa2\u67e5\u8a72\u6578\u64da\u584a\u662f\u5426\u5728\u7de9\u5b58\u4e2d\u3002\u5982\u679c\u6578\u64da\u584a\u5df2\u7d93\u5b58\u5728\u65bc\u7de9\u5b58\u4e2d\uff0c\u5247\u6703\u9032\u884cconsistent gets\u64cd\u4f5c\u3002\u9019\u610f\u5473\u8457\u6578\u64da\u5eab\u4e0d\u9700\u8981\u5f9e\u78c1\u789f\u4e2d\u8b80\u53d6\u6578\u64da\uff0c\u5f9e\u800c\u63d0\u9ad8\u4e86\u67e5\u8a62\u7684\u6548\u7387\u3002<\/p>\n<h2 id=\"consistent-gets%e7%9a%84%e7%89%b9%e4%be%8b-NoQuciryPR\">Consistent Gets\u7684\u7279\u4f8b<\/h2>\n<p>\u5728\u67d0\u4e9b\u7279\u5b9a\u60c5\u6cc1\u4e0b\uff0cconsistent gets\u7684\u4f7f\u7528\u6703\u986f\u5f97\u5c24\u70ba\u91cd\u8981\u3002\u4ee5\u4e0b\u662f\u5e7e\u500b\u5e38\u898b\u7684\u7279\u4f8b\uff1a<\/p>\n<ul>\n<li><strong>\u591a\u7248\u672c\u63a7\u5236\uff08MVCC\uff09<\/strong>: \u5728Oracle\u4e2d\uff0c\u7576\u4e00\u500b\u4e8b\u52d9\u6b63\u5728\u4fee\u6539\u6578\u64da\u6642\uff0c\u5176\u4ed6\u4e8b\u52d9\u4ecd\u7136\u53ef\u4ee5\u8b80\u53d6\u8a72\u6578\u64da\u7684\u820a\u7248\u672c\u3002\u9019\u7a2e\u60c5\u6cc1\u4e0b\uff0cconsistent gets\u6703\u7528\u65bc\u7372\u53d6\u9019\u4e9b\u820a\u7248\u672c\u7684\u6578\u64da\uff0c\u5f9e\u800c\u4fdd\u8b49\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002<\/li>\n<li><strong>\u67e5\u8a62\u512a\u5316<\/strong>: \u5728\u57f7\u884c\u8907\u96dc\u67e5\u8a62\u6642\uff0cOracle\u6703\u4f7f\u7528consistent gets\u4f86\u78ba\u4fdd\u67e5\u8a62\u7d50\u679c\u7684\u6b63\u78ba\u6027\u3002\u9019\u5c0d\u65bc\u9700\u8981\u591a\u6b21\u8a2a\u554f\u76f8\u540c\u6578\u64da\u7684\u67e5\u8a62\u7279\u5225\u91cd\u8981\u3002<\/li>\n<li><strong>\u7d22\u5f15\u4f7f\u7528<\/strong>: \u7576\u67e5\u8a62\u4f7f\u7528\u7d22\u5f15\u6642\uff0cconsistent gets\u7684\u6b21\u6578\u53ef\u80fd\u6703\u589e\u52a0\uff0c\u56e0\u70ba\u6578\u64da\u5eab\u9700\u8981\u5f9e\u7de9\u5b58\u4e2d\u7372\u53d6\u7d22\u5f15\u7684\u76f8\u95dc\u6578\u64da\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e5%84%aa%e5%8c%96consistent-gets-NoQuciryPR\">\u5982\u4f55\u512a\u5316Consistent Gets<\/h2>\n<p>\u70ba\u4e86\u63d0\u9ad8consistent gets\u7684\u6548\u7387\uff0c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u53ef\u4ee5\u63a1\u53d6\u4ee5\u4e0b\u5e7e\u7a2e\u512a\u5316\u63aa\u65bd\uff1a<\/p>\n<ul>\n<li><strong>\u8abf\u6574\u7de9\u5b58\u5927\u5c0f<\/strong>: \u589e\u52a0\u7de9\u5b58\u7684\u5927\u5c0f\u53ef\u4ee5\u6e1b\u5c11\u5f9e\u78c1\u789f\u8b80\u53d6\u6578\u64da\u7684\u6b21\u6578\uff0c\u5f9e\u800c\u964d\u4f4econsistent gets\u7684\u6b21\u6578\u3002<\/li>\n<li><strong>\u512a\u5316\u67e5\u8a62<\/strong>: \u901a\u904e\u91cd\u5beb\u67e5\u8a62\u6216\u4f7f\u7528\u66f4\u6709\u6548\u7684\u7d22\u5f15\uff0c\u53ef\u4ee5\u6e1b\u5c11\u5c0d\u6578\u64da\u7684\u8a2a\u554f\u6b21\u6578\uff0c\u5f9e\u800c\u964d\u4f4econsistent gets\u7684\u8ca0\u64d4\u3002<\/li>\n<li><strong>\u76e3\u63a7\u6027\u80fd\u6307\u6a19<\/strong>: \u5b9a\u671f\u76e3\u63a7consistent gets\u548c\u5176\u4ed6\u6027\u80fd\u6307\u6a19\uff0c\u53ef\u4ee5\u5e6b\u52a9\u7ba1\u7406\u54e1\u53ca\u6642\u767c\u73fe\u554f\u984c\u4e26\u9032\u884c\u8abf\u6574\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-NoQuciryPR\">\u7d50\u8ad6<\/h2>\n<p>Consistent gets\u5728Oracle\u6578\u64da\u5eab\u4e2d\u626e\u6f14\u8457\u91cd\u8981\u7684\u89d2\u8272\uff0c\u7279\u5225\u662f\u5728\u4fdd\u8b49\u6578\u64da\u4e00\u81f4\u6027\u548c\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u65b9\u9762\u3002\u901a\u904e\u7406\u89e3\u5176\u7279\u4f8b\u548c\u512a\u5316\u65b9\u6cd5\uff0c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u53ef\u4ee5\u6709\u6548\u5730\u63d0\u5347\u6578\u64da\u5eab\u7684\u6574\u9ad4\u6027\u80fd\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u61c9\u7528\uff0c\u5408\u7406\u914d\u7f6e\u548c\u512a\u5316consistent gets\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc\u65bc<code>VPS<\/code>\u3001<code>\u9999\u6e2fVPS<\/code>\u3001<code>\u4f3a\u670d\u5668<\/code>\u53ca<code>\u96f2\u4f3a\u670d\u5668<\/code>\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9 <a href=\"https:\/\/server.hk\">Server.HK<\/a>\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Oracle\u6578\u64da\u5eab\u4e2dconsistent gets\u7684\u7279\u4f8b\uff0c\u4e86\u89e3\u5176\u5728\u6578\u64da\u6aa2\u7d22\u548c\u6027\u80fd\u512a\u5316\u4e2d\u7684\u91cd\u8981\u6027\u3002<\/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-95470","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95470","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=95470"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95470\/revisions"}],"predecessor-version":[{"id":95471,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95470\/revisions\/95471"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=95470"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=95470"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=95470"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}