{"id":60941,"date":"2024-10-13T07:06:14","date_gmt":"2024-10-12T23:06:14","guid":{"rendered":"https:\/\/server.hk\/cnblog\/60941\/"},"modified":"2024-10-13T07:06:14","modified_gmt":"2024-10-12T23:06:14","slug":"db2%e6%80%a7%e8%83%bd%e8%aa%bf%e5%84%aa%e4%b9%8b%e8%a8%ad%e8%a8%88%e4%b8%a6%e9%85%8d%e7%bd%ae%e7%9b%b8%e9%97%9c%e6%95%b8%e6%93%9a%e5%ba%ab%e5%af%a6%e6%93%8d","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/60941\/","title":{"rendered":"DB2\u6027\u80fd\u8abf\u512a\u4e4b\u8a2d\u8a08\u4e26\u914d\u7f6e\u76f8\u95dc\u6578\u64da\u5eab\u5be6\u64cd"},"content":{"rendered":"<h1 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id=\"%e6%9f%a5%e8%a9%a2%e5%84%aa%e5%8c%96-lzRzADHoii\">\u67e5\u8a62\u512a\u5316<\/h2>\n<p>\u67e5\u8a62\u6027\u80fd\u76f4\u63a5\u5f71\u97ff\u6578\u64da\u5eab\u7684\u6574\u9ad4\u6027\u80fd\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u67e5\u8a62\u512a\u5316\u7684\u6280\u5de7\uff1a<\/p>\n<ul>\n<li><strong>\u4f7f\u7528EXPLAIN\u547d\u4ee4\uff1a<\/strong>DB2\u63d0\u4f9b\u4e86EXPLAIN\u547d\u4ee4\uff0c\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u5206\u6790\u67e5\u8a62\u7684\u57f7\u884c\u8a08\u5283\uff0c\u5f9e\u800c\u627e\u51fa\u6027\u80fd\u74f6\u9838\u3002<\/li>\n<li><strong>\u907f\u514d\u4f7f\u7528SELECT *\uff1a<\/strong>\u5728\u67e5\u8a62\u4e2d\u907f\u514d\u4f7f\u7528SELECT *\uff0c\u61c9\u660e\u78ba\u6307\u5b9a\u9700\u8981\u7684\u5217\uff0c\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u6578\u64da\u50b3\u8f38\u91cf\u3002<\/li>\n<\/ul>\n<h2 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id=\"%e7%b3%bb%e7%b5%b1%e9%85%8d%e7%bd%ae-lzRzADHoii\">\u7cfb\u7d71\u914d\u7f6e<\/h2>\n<p>DB2\u7684\u7cfb\u7d71\u914d\u7f6e\u5c0d\u6027\u80fd\u4e5f\u6709\u91cd\u8981\u5f71\u97ff\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u914d\u7f6e\u5efa\u8b70\uff1a<\/p>\n<ul>\n<li><strong>\u8abf\u6574\u5167\u5b58\u914d\u7f6e\uff1a<\/strong>\u6839\u64da\u5be6\u969b\u8ca0\u8f09\u8abf\u6574DB2\u7684\u5167\u5b58\u914d\u7f6e\uff0c\u4f8b\u5982BUFFERPOOL\u7684\u5927\u5c0f\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u6027\u80fd\u3002<\/li>\n<li><strong>\u76e3\u63a7\u7cfb\u7d71\u6027\u80fd\uff1a<\/strong>\u4f7f\u7528DB2\u7684\u76e3\u63a7\u5de5\u5177\u5b9a\u671f\u6aa2\u67e5\u7cfb\u7d71\u6027\u80fd\uff0c\u53ca\u6642\u767c\u73fe\u4e26\u89e3\u6c7a\u554f\u984c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%af%a6%e6%93%8d%e7%a4%ba%e4%be%8b-lzRzADHoii\">\u5be6\u64cd\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684DB2\u6027\u80fd\u8abf\u512a\u5be6\u64cd\u793a\u4f8b\uff1a<\/p>\n<pre><code>-- 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id=\"%e7%b8%bd%e7%b5%90-lzRzADHoii\">\u7e3d\u7d50<\/h2>\n<p>DB2\u6027\u80fd\u8abf\u512a\u662f\u4e00\u500b\u7cfb\u7d71\u6027\u5de5\u7a0b\uff0c\u6d89\u53ca\u6578\u64da\u5eab\u8a2d\u8a08\u3001\u67e5\u8a62\u512a\u5316\u3001\u7d22\u5f15\u7ba1\u7406\u548c\u7cfb\u7d71\u914d\u7f6e\u7b49\u591a\u500b\u65b9\u9762\u3002\u901a\u904e\u5408\u7406\u7684\u8a2d\u8a08\u548c\u914d\u7f6e\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6027\u80fd\uff0c\u6eff\u8db3\u696d\u52d9\u9700\u6c42\u3002\u82e5\u60a8\u9700\u8981\u9032\u4e00\u6b65\u4e86\u89e3\u5982\u4f55\u5728\u9999\u6e2f\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> 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