{"id":95356,"date":"2024-10-20T00:22:17","date_gmt":"2024-10-19T16:22:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/95356\/"},"modified":"2024-10-20T00:22:18","modified_gmt":"2024-10-19T16:22:18","slug":"oracle%e5%af%a6%e7%8f%be%e5%a4%9a%e6%a2%9d%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%80%e6%ac%a1%e6%9f%a5%e8%a9%a2-oracle%e4%b8%80%e6%ac%a1%e6%9f%a5%e5%a4%9a%e6%a2%9d%e6%95%b8%e6%93%9a%e5%ba%ab","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/95356\/","title":{"rendered":"Oracle\u5be6\u73fe\u591a\u689d\u6578\u64da\u5eab\u4e00\u6b21\u67e5\u8a62 (oracle\u4e00\u6b21\u67e5\u591a\u689d\u6578\u64da\u5eab)"},"content":{"rendered":"<h1 id=\"oracle%e5%af%a6%e7%8f%be%e5%a4%9a%e6%a2%9d%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%80%e6%ac%a1%e6%9f%a5%e8%a9%a2-LlnPQMsjQS\">Oracle\u5be6\u73fe\u591a\u689d\u6578\u64da\u5eab\u4e00\u6b21\u67e5\u8a62<\/h1>\n<p>\u5728\u73fe\u4ee3\u4f01\u696d\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u7ba1\u7406\u548c\u67e5\u8a62\u6548\u7387\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\u529f\u80fd\u4f86\u652f\u6301\u8907\u96dc\u7684\u67e5\u8a62\u9700\u6c42\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728Oracle\u4e2d\u5be6\u73fe\u591a\u689d\u6578\u64da\u5eab\u7684\u540c\u6642\u67e5\u8a62\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"%e5%a4%9a%e6%95%b8%e6%93%9a%e5%ba%ab%e6%9f%a5%e8%a9%a2%e7%9a%84%e5%bf%85%e8%a6%81%e6%80%a7-LlnPQMsjQS\">\u591a\u6578\u64da\u5eab\u67e5\u8a62\u7684\u5fc5\u8981\u6027<\/h2>\n<p>\u5728\u8a31\u591a\u60c5\u6cc1\u4e0b\uff0c\u4f01\u696d\u9700\u8981\u5f9e\u591a\u500b\u6578\u64da\u5eab\u4e2d\u63d0\u53d6\u6578\u64da\u4ee5\u9032\u884c\u5206\u6790\u6216\u5831\u544a\u3002\u9019\u53ef\u80fd\u662f\u56e0\u70ba\u6578\u64da\u5206\u6563\u5728\u4e0d\u540c\u7684\u7cfb\u7d71\u4e2d\uff0c\u6216\u8005\u56e0\u70ba\u4e0d\u540c\u7684\u696d\u52d9\u55ae\u4f4d\u4f7f\u7528\u4e0d\u540c\u7684\u6578\u64da\u5eab\u3002\u7121\u8ad6\u539f\u56e0\u5982\u4f55\uff0c\u80fd\u5920\u540c\u6642\u67e5\u8a62\u591a\u500b\u6578\u64da\u5eab\u5c07\u5927\u5927\u63d0\u9ad8\u5de5\u4f5c\u6548\u7387\u3002<\/p>\n<h2 id=\"oracle%e7%9a%84%e6%95%b8%e6%93%9a%e5%ba%ab%e9%8f%88%e6%8e%a5%e5%8a%9f%e8%83%bd-LlnPQMsjQS\">Oracle\u7684\u6578\u64da\u5eab\u93c8\u63a5\u529f\u80fd<\/h2>\n<p>Oracle\u63d0\u4f9b\u4e86\u4e00\u500b\u540d\u70ba\u201c\u6578\u64da\u5eab\u93c8\u63a5\u201d\uff08Database Link\uff09\u7684\u529f\u80fd\uff0c\u5141\u8a31\u7528\u6236\u5728\u4e00\u500b\u6578\u64da\u5eab\u4e2d\u67e5\u8a62\u53e6\u4e00\u500b\u6578\u64da\u5eab\u7684\u6578\u64da\u3002\u9019\u4f7f\u5f97\u8de8\u6578\u64da\u5eab\u67e5\u8a62\u8b8a\u5f97\u7c21\u55ae\u800c\u9ad8\u6548\u3002<\/p>\n<h3 id=\"%e5%89%b5%e5%bb%ba%e6%95%b8%e6%93%9a%e5%ba%ab%e9%8f%88%e6%8e%a5-LlnPQMsjQS\">\u5275\u5efa\u6578\u64da\u5eab\u93c8\u63a5<\/h3>\n<p>\u8981\u4f7f\u7528\u6578\u64da\u5eab\u93c8\u63a5\uff0c\u9996\u5148\u9700\u8981\u5728Oracle\u4e2d\u5275\u5efa\u4e00\u500b\u93c8\u63a5\u3002\u4ee5\u4e0b\u662f\u5275\u5efa\u6578\u64da\u5eab\u93c8\u63a5\u7684\u57fa\u672c\u8a9e\u6cd5\uff1a<\/p>\n<pre><code>CREATE DATABASE LINK link_name\nCONNECT TO remote_user IDENTIFIED BY 'password'\nUSING 'remote_database';<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c<code>link_name<\/code>\u662f\u60a8\u70ba\u93c8\u63a5\u6307\u5b9a\u7684\u540d\u7a31\uff0c<code>remote_user<\/code>\u548c<code>password<\/code>\u662f\u9060\u7a0b\u6578\u64da\u5eab\u7684\u7528\u6236\u540d\u548c\u5bc6\u78bc\uff0c<code>remote_database<\/code>\u662f\u9060\u7a0b\u6578\u64da\u5eab\u7684\u9023\u63a5\u5b57\u7b26\u4e32\u3002<\/p>\n<h3 id=\"%e4%bd%bf%e7%94%a8%e6%95%b8%e6%93%9a%e5%ba%ab%e9%8f%88%e6%8e%a5%e9%80%b2%e8%a1%8c%e6%9f%a5%e8%a9%a2-LlnPQMsjQS\">\u4f7f\u7528\u6578\u64da\u5eab\u93c8\u63a5\u9032\u884c\u67e5\u8a62<\/h3>\n<p>\u4e00\u65e6\u5275\u5efa\u4e86\u6578\u64da\u5eab\u93c8\u63a5\uff0c\u60a8\u5c31\u53ef\u4ee5\u4f7f\u7528\u5b83\u4f86\u67e5\u8a62\u9060\u7a0b\u6578\u64da\u5eab\u4e2d\u7684\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n<pre><code>SELECT *\nFROM remote_table@link_name;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c<code>remote_table<\/code>\u662f\u60a8\u5e0c\u671b\u67e5\u8a62\u7684\u9060\u7a0b\u6578\u64da\u8868\uff0c\u800c<code>link_name<\/code>\u662f\u60a8\u4e4b\u524d\u5275\u5efa\u7684\u6578\u64da\u5eab\u93c8\u63a5\u7684\u540d\u7a31\u3002<\/p>\n<h2 id=\"%e5%a4%9a%e6%95%b8%e6%93%9a%e5%ba%ab%e6%9f%a5%e8%a9%a2%e7%9a%84%e7%a4%ba%e4%be%8b-LlnPQMsjQS\">\u591a\u6578\u64da\u5eab\u67e5\u8a62\u7684\u793a\u4f8b<\/h2>\n<p>\u5047\u8a2d\u60a8\u6709\u5169\u500b\u6578\u64da\u5eab\uff0c\u5206\u5225\u662fDB1\u548cDB2\uff0c\u4e26\u4e14\u60a8\u5e0c\u671b\u5f9e\u9019\u5169\u500b\u6578\u64da\u5eab\u4e2d\u67e5\u8a62\u7528\u6236\u4fe1\u606f\u3002\u60a8\u53ef\u4ee5\u9019\u6a23\u505a\uff1a<\/p>\n<pre><code>SELECT a.user_id, a.user_name, b.order_id\nFROM users@DB1 a\nJOIN orders@DB2 b ON a.user_id = b.user_id;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u67e5\u8a62\u4e2d\uff0c\u6211\u5011\u5f9eDB1\u7684\u7528\u6236\u8868\u4e2d\u9078\u64c7\u7528\u6236ID\u548c\u7528\u6236\u540d\uff0c\u4e26\u5f9eDB2\u7684\u8a02\u55ae\u8868\u4e2d\u9078\u64c7\u8a02\u55aeID\u3002\u901a\u904e\u4f7f\u7528\u6578\u64da\u5eab\u93c8\u63a5\uff0c\u6211\u5011\u80fd\u5920\u8f15\u9b06\u5730\u5c07\u4f86\u81ea\u4e0d\u540c\u6578\u64da\u5eab\u7684\u6578\u64da\u7d50\u5408\u5728\u4e00\u8d77\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-LlnPQMsjQS\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528\u6578\u64da\u5eab\u93c8\u63a5\u6642\uff0c\u6709\u5e7e\u500b\u6ce8\u610f\u4e8b\u9805\u9700\u8981\u8003\u616e\uff1a<\/p>\n<ul>\n<li>\u6027\u80fd\uff1a\u8de8\u6578\u64da\u5eab\u67e5\u8a62\u53ef\u80fd\u6703\u5f71\u97ff\u6027\u80fd\uff0c\u7279\u5225\u662f\u7576\u6578\u64da\u91cf\u5f88\u5927\u6642\u3002<\/li>\n<li>\u5b89\u5168\u6027\uff1a\u78ba\u4fdd\u9060\u7a0b\u6578\u64da\u5eab\u7684\u5b89\u5168\u6027\uff0c\u4e26\u9650\u5236\u8a2a\u554f\u6b0a\u9650\u3002<\/li>\n<li>\u6578\u64da\u4e00\u81f4\u6027\uff1a\u5728\u9032\u884c\u591a\u6578\u64da\u5eab\u67e5\u8a62\u6642\uff0c\u9700\u8003\u616e\u6578\u64da\u7684\u4e00\u81f4\u6027\u554f\u984c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-LlnPQMsjQS\">\u7e3d\u7d50<\/h2>\n<p>\u901a\u904e\u4f7f\u7528Oracle\u7684\u6578\u64da\u5eab\u93c8\u63a5\u529f\u80fd\uff0c\u4f01\u696d\u53ef\u4ee5\u8f15\u9b06\u5be6\u73fe\u591a\u689d\u6578\u64da\u5eab\u7684\u540c\u6642\u67e5\u8a62\uff0c\u5f9e\u800c\u63d0\u9ad8\u6578\u64da\u7ba1\u7406\u7684\u6548\u7387\u3002\u9019\u7a2e\u65b9\u6cd5\u4e0d\u50c5\u7c21\u5316\u4e86\u67e5\u8a62\u904e\u7a0b\uff0c\u9084\u80fd\u5920\u652f\u6301\u66f4\u8907\u96dc\u7684\u6578\u64da\u5206\u6790\u9700\u6c42\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u6578\u64da\u7ba1\u7406\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u642d\u5efa\u60a8\u7684Oracle\u6578\u64da\u5eab\u74b0\u5883\uff0c\u4eab\u53d7\u66f4\u5feb\u7684\u67e5\u8a62\u901f\u5ea6\u548c\u66f4\u9ad8\u7684\u5b89\u5168\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5982\u4f55\u5728Oracle\u4e2d\u5be6\u73fe\u4e00\u6b21\u67e5\u8a62\u591a\u689d\u6578\u64da\u5eab\uff0c\u63d0\u5347\u6578\u64da\u6aa2\u7d22\u6548\u7387\uff0c\u7c21\u5316\u6578\u64da\u7ba1\u7406\u6d41\u7a0b\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-95356","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95356","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=95356"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95356\/revisions"}],"predecessor-version":[{"id":95357,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95356\/revisions\/95357"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=95356"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=95356"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=95356"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}