{"id":96138,"date":"2024-10-20T06:55:19","date_gmt":"2024-10-19T22:55:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/96138\/"},"modified":"2024-10-20T06:55:19","modified_gmt":"2024-10-19T22:55:19","slug":"oracle%e6%80%a7%e8%83%bd%e8%aa%bf%e5%84%aa%e5%8e%9f%e5%89%87","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/96138\/","title":{"rendered":"Oracle\u6027\u80fd\u8abf\u512a\u539f\u5247"},"content":{"rendered":"<h1 id=\"oracle%e6%80%a7%e8%83%bd%e8%aa%bf%e5%84%aa%e5%8e%9f%e5%89%87-EgxLihybAk\">Oracle\u6027\u80fd\u8abf\u512a\u539f\u5247<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u6027\u80fd\u5c0d\u65bc\u4f01\u696d\u7684\u6210\u529f\u81f3\u95dc\u91cd\u8981\u3002Oracle\u6578\u64da\u5eab\u4f5c\u70ba\u4e00\u500b\u5f37\u5927\u7684\u6578\u64da\u7ba1\u7406\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u5de5\u5177\u548c\u6280\u8853\u4f86\u512a\u5316\u6027\u80fd\u3002\u672c\u6587\u5c07\u63a2\u8a0eOracle\u6027\u80fd\u8abf\u512a\u7684\u57fa\u672c\u539f\u5247\uff0c\u5e6b\u52a9\u7528\u6236\u66f4\u6709\u6548\u5730\u7ba1\u7406\u548c\u512a\u5316\u5176\u6578\u64da\u5eab\u3002<\/p>\n<h2 id=\"1-%e7%9e%ad%e8%a7%a3%e6%80%a7%e8%83%bd%e6%8c%87%e6%a8%99-EgxLihybAk\">1. \u77ad\u89e3\u6027\u80fd\u6307\u6a19<\/h2>\n<p>\u5728\u9032\u884c\u6027\u80fd\u8abf\u512a\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u4e86\u89e3\u5f71\u97ffOracle\u6578\u64da\u5eab\u6027\u80fd\u7684\u4e3b\u8981\u6307\u6a19\u3002\u9019\u4e9b\u6307\u6a19\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u97ff\u61c9\u6642\u9593\uff1a<\/strong>\u7528\u6236\u8acb\u6c42\u5230\u9054\u6578\u64da\u5eab\u4e26\u7372\u5f97\u97ff\u61c9\u6240\u9700\u7684\u6642\u9593\u3002<\/li>\n<li><strong>\u541e\u5410\u91cf\uff1a<\/strong>\u5728\u55ae\u4f4d\u6642\u9593\u5167\u8655\u7406\u7684\u8acb\u6c42\u6578\u91cf\u3002<\/li>\n<li><strong>\u8cc7\u6e90\u5229\u7528\u7387\uff1a<\/strong>CPU\u3001\u5167\u5b58\u3001\u78c1\u789f\u548c\u7db2\u7d61\u7b49\u8cc7\u6e90\u7684\u4f7f\u7528\u60c5\u6cc1\u3002<\/li>\n<\/ul>\n<p>\u901a\u904e\u76e3\u63a7\u9019\u4e9b\u6307\u6a19\uff0c\u7ba1\u7406\u54e1\u53ef\u4ee5\u8b58\u5225\u6027\u80fd\u74f6\u9838\u4e26\u9032\u884c\u76f8\u61c9\u7684\u8abf\u6574\u3002<\/p>\n<h2 id=\"2-sql%e6%9f%a5%e8%a9%a2%e5%84%aa%e5%8c%96-EgxLihybAk\">2. SQL\u67e5\u8a62\u512a\u5316<\/h2>\n<p>SQL\u67e5\u8a62\u7684\u6548\u7387\u76f4\u63a5\u5f71\u97ff\u6578\u64da\u5eab\u7684\u6027\u80fd\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u512a\u5316SQL\u67e5\u8a62\u7684\u5efa\u8b70\uff1a<\/p>\n<ul>\n<li><strong>\u4f7f\u7528\u7d22\u5f15\uff1a<\/strong>\u7d22\u5f15\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u901f\u5ea6\u3002\u78ba\u4fdd\u5728\u7d93\u5e38\u67e5\u8a62\u7684\u5217\u4e0a\u5275\u5efa\u9069\u7576\u7684\u7d22\u5f15\u3002<\/li>\n<li><strong>\u907f\u514dSELECT *\uff1a<\/strong>\u50c5\u9078\u64c7\u9700\u8981\u7684\u5217\uff0c\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u6578\u64da\u50b3\u8f38\u91cf\u3002<\/li>\n<li><strong>\u4f7f\u7528EXPLAIN\u8a08\u5283\uff1a<\/strong>\u901a\u904e\u5206\u6790\u67e5\u8a62\u8a08\u5283\uff0c\u4e86\u89e3\u67e5\u8a62\u7684\u57f7\u884c\u8def\u5f91\uff0c\u5f9e\u800c\u9032\u884c\u91dd\u5c0d\u6027\u7684\u512a\u5316\u3002<\/li>\n<\/ul>\n<pre><code>-- \u4f7f\u7528EXPLAIN\u5206\u6790\u67e5\u8a62\nEXPLAIN PLAN FOR\nSELECT column1, column2 FROM table_name WHERE condition;<\/code><\/pre>\n<h2 id=\"3-%e6%95%b8%e6%93%9a%e5%ba%ab%e9%85%8d%e7%bd%ae%e8%aa%bf%e6%95%b4-EgxLihybAk\">3. \u6578\u64da\u5eab\u914d\u7f6e\u8abf\u6574<\/h2>\n<p>\u6578\u64da\u5eab\u7684\u914d\u7f6e\u5c0d\u6027\u80fd\u6709\u8457\u91cd\u8981\u5f71\u97ff\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u95dc\u9375\u7684\u914d\u7f6e\u53c3\u6578\uff1a<\/p>\n<ul>\n<li><strong>SGA\uff08System Global Area\uff09\uff1a<\/strong>\u8abf\u6574SGA\u7684\u5927\u5c0f\u53ef\u4ee5\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u7de9\u5b58\u80fd\u529b\uff0c\u5f9e\u800c\u6e1b\u5c11\u78c1\u789fI\/O\u3002<\/li>\n<li><strong>PGA\uff08Program Global Area\uff09\uff1a<\/strong>\u78ba\u4fddPGA\u7684\u5927\u5c0f\u8db3\u5920\uff0c\u4ee5\u652f\u6301\u8907\u96dc\u7684\u67e5\u8a62\u548c\u6392\u5e8f\u64cd\u4f5c\u3002<\/li>\n<li><strong>\u4e26\u884c\u8655\u7406\uff1a<\/strong>\u6839\u64da\u7cfb\u7d71\u7684\u786c\u9ad4\u8cc7\u6e90\uff0c\u8abf\u6574\u4e26\u884c\u8655\u7406\u7684\u53c3\u6578\uff0c\u4ee5\u63d0\u9ad8\u67e5\u8a62\u7684\u57f7\u884c\u6548\u7387\u3002<\/li>\n<\/ul>\n<h2 id=\"4-%e5%ae%9a%e6%9c%9f%e7%b6%ad%e8%ad%b7-EgxLihybAk\">4. \u5b9a\u671f\u7dad\u8b77<\/h2>\n<p>\u5b9a\u671f\u7684\u6578\u64da\u5eab\u7dad\u8b77\u662f\u4fdd\u6301\u6027\u80fd\u7684\u95dc\u9375\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u7dad\u8b77\u5efa\u8b70\uff1a<\/p>\n<ul>\n<li><strong>\u91cd\u5efa\u7d22\u5f15\uff1a<\/strong>\u96a8\u8457\u6578\u64da\u7684\u589e\u9577\uff0c\u7d22\u5f15\u53ef\u80fd\u6703\u8b8a\u5f97\u4e0d\u518d\u9ad8\u6548\uff0c\u5b9a\u671f\u91cd\u5efa\u7d22\u5f15\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002<\/li>\n<li><strong>\u66f4\u65b0\u7d71\u8a08\u4fe1\u606f\uff1a<\/strong>\u78ba\u4fdd\u7d71\u8a08\u4fe1\u606f\u662f\u6700\u65b0\u7684\uff0c\u4ee5\u4fbf\u67e5\u8a62\u512a\u5316\u5668\u80fd\u5920\u505a\u51fa\u6700\u4f73\u7684\u57f7\u884c\u8a08\u5283\u3002<\/li>\n<li><strong>\u6e05\u7406\u7121\u7528\u6578\u64da\uff1a<\/strong>\u5b9a\u671f\u522a\u9664\u904e\u671f\u6216\u4e0d\u518d\u9700\u8981\u7684\u6578\u64da\uff0c\u4ee5\u91cb\u653e\u8cc7\u6e90\u3002<\/li>\n<\/ul>\n<h2 id=\"5-%e7%9b%a3%e6%8e%a7%e5%92%8c%e8%aa%bf%e6%95%b4-EgxLihybAk\">5. \u76e3\u63a7\u548c\u8abf\u6574<\/h2>\n<p>\u6027\u80fd\u8abf\u512a\u662f\u4e00\u500b\u6301\u7e8c\u7684\u904e\u7a0b\u3002\u4f7f\u7528Oracle\u63d0\u4f9b\u7684\u76e3\u63a7\u5de5\u5177\uff0c\u5982AWR\uff08Automatic Workload Repository\uff09\u548cASH\uff08Active Session History\uff09\uff0c\u53ef\u4ee5\u5e6b\u52a9\u7ba1\u7406\u54e1\u6301\u7e8c\u76e3\u63a7\u6578\u64da\u5eab\u6027\u80fd\uff0c\u53ca\u6642\u767c\u73fe\u554f\u984c\u4e26\u9032\u884c\u8abf\u6574\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-EgxLihybAk\">\u7e3d\u7d50<\/h2>\n<p>Oracle\u6027\u80fd\u8abf\u512a\u662f\u4e00\u500b\u7cfb\u7d71\u6027\u548c\u6301\u7e8c\u7684\u904e\u7a0b\uff0c\u6d89\u53ca\u591a\u500b\u65b9\u9762\u7684\u8003\u91cf\u3002\u901a\u904e\u4e86\u89e3\u6027\u80fd\u6307\u6a19\u3001\u512a\u5316SQL\u67e5\u8a62\u3001\u8abf\u6574\u6578\u64da\u5eab\u914d\u7f6e\u3001\u5b9a\u671f\u7dad\u8b77\u4ee5\u53ca\u6301\u7e8c\u76e3\u63a7\uff0c\u7ba1\u7406\u54e1\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6027\u80fd\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u80fd\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\u7684\u4f01\u696d\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u6216 <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u662f\u81f3\u95dc\u91cd\u8981\u7684\uff0c\u9019\u5c07\u6709\u52a9\u65bc\u652f\u6301\u5176\u696d\u52d9\u904b\u71df\u548c\u6578\u64da\u7ba1\u7406\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Oracle\u6027\u80fd\u8abf\u512a\u539f\u5247\uff0c\u63d0\u5347\u6578\u64da\u5eab\u6548\u7387\uff0c\u512a\u5316\u67e5\u8a62\u901f\u5ea6\uff0c\u78ba\u4fdd\u7cfb\u7d71\u7a69\u5b9a\u6027\u8207\u53ef\u64f4\u5c55\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-96138","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96138","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=96138"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96138\/revisions"}],"predecessor-version":[{"id":96139,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96138\/revisions\/96139"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=96138"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=96138"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=96138"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}