{"id":166691,"date":"2024-11-05T18:36:20","date_gmt":"2024-11-05T10:36:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/166691\/"},"modified":"2024-11-05T18:36:21","modified_gmt":"2024-11-05T10:36:21","slug":"%e5%bf%ab%e9%80%9f%e6%8e%8c%e6%8f%a1%e6%95%b8%e6%93%9a%e5%ba%ab%e9%96%83%e5%9b%9e%e6%8a%80%e8%83%bd%ef%bc%8c%e8%a9%b3%e8%a7%a3%e9%96%83%e7%a8%8b-%e6%95%b8%e6%93%9a%e5%ba%ab%e9%96%83%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/166691\/","title":{"rendered":"\u5feb\u901f\u638c\u63e1\u6578\u64da\u5eab\u9583\u56de\u6280\u80fd\uff0c\u8a73\u89e3\u9583\u7a0b (\u6578\u64da\u5eab\u9583\u7a0b)"},"content":{"rendered":"<h1 id=\"%e5%bf%ab%e9%80%9f%e6%8e%8c%e6%8f%a1%e6%95%b8%e6%93%9a%e5%ba%ab%e9%96%83%e5%9b%9e%e6%8a%80%e8%83%bd%ef%bc%8c%e8%a9%b3%e8%a7%a3%e9%96%83%e7%a8%8b-%e6%95%b8%e6%93%9a%e5%ba%ab%e9%96%83%e7%a8%8b-OPxoWIirhI\">\u5feb\u901f\u638c\u63e1\u6578\u64da\u5eab\u9583\u56de\u6280\u80fd\uff0c\u8a73\u89e3\u9583\u7a0b (\u6578\u64da\u5eab\u9583\u7a0b)<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u53ef\u9760\u6027\u548c\u53ef\u7528\u6027\u81f3\u95dc\u91cd\u8981\u3002\u6578\u64da\u5eab\u9583\u56de\u6280\u8853\uff08Flashback Technology\uff09\u662f\u4e00\u7a2e\u5f37\u5927\u7684\u5de5\u5177\uff0c\u80fd\u5920\u5e6b\u52a9\u7528\u6236\u8fc5\u901f\u6062\u5fa9\u6578\u64da\u5eab\u5230\u5148\u524d\u7684\u72c0\u614b\uff0c\u5f9e\u800c\u6e1b\u5c11\u6578\u64da\u4e1f\u5931\u7684\u98a8\u96aa\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u6578\u64da\u5eab\u9583\u56de\u7684\u6982\u5ff5\u3001\u539f\u7406\u53ca\u5176\u61c9\u7528\uff0c\u5e6b\u52a9\u8b80\u8005\u5feb\u901f\u638c\u63e1\u9019\u4e00\u6280\u80fd\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e6%95%b8%e6%93%9a%e5%ba%ab%e9%96%83%e5%9b%9e%e6%8a%80%e8%a1%93%ef%bc%9f-OPxoWIirhI\">\u4ec0\u9ebc\u662f\u6578\u64da\u5eab\u9583\u56de\u6280\u8853\uff1f<\/h2>\n<p>\u6578\u64da\u5eab\u9583\u56de\u6280\u8853\u662f\u4e00\u7a2e\u5141\u8a31\u7528\u6236\u5728\u6578\u64da\u5eab\u4e2d\u5feb\u901f\u6062\u5fa9\u5230\u67d0\u4e00\u7279\u5b9a\u6642\u9593\u9ede\u7684\u529f\u80fd\u3002\u9019\u9805\u6280\u8853\u7279\u5225\u9069\u7528\u65bc\u610f\u5916\u522a\u9664\u6578\u64da\u6216\u6578\u64da\u640d\u58de\u7684\u60c5\u6cc1\u3002\u901a\u904e\u9583\u56de\uff0c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u53ef\u4ee5\u5728\u4e0d\u5f71\u97ff\u7576\u524d\u6578\u64da\u7684\u60c5\u6cc1\u4e0b\uff0c\u8f15\u9b06\u5730\u6062\u5fa9\u5230\u5148\u524d\u7684\u72c0\u614b\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e9%96%83%e5%9b%9e%e7%9a%84%e5%b7%a5%e4%bd%9c%e5%8e%9f%e7%90%86-OPxoWIirhI\">\u6578\u64da\u5eab\u9583\u56de\u7684\u5de5\u4f5c\u539f\u7406<\/h2>\n<p>\u6578\u64da\u5eab\u9583\u56de\u6280\u8853\u7684\u6838\u5fc3\u5728\u65bc\u5176\u4f7f\u7528\u7684\u65e5\u8a8c\u548c\u5feb\u7167\u3002\u7576\u6578\u64da\u5eab\u9032\u884c\u64cd\u4f5c\u6642\uff0c\u7cfb\u7d71\u6703\u81ea\u52d5\u8a18\u9304\u6240\u6709\u7684\u8b8a\u66f4\uff0c\u9019\u4e9b\u8b8a\u66f4\u6703\u88ab\u5beb\u5165\u65e5\u8a8c\u6587\u4ef6\u4e2d\u3002\u6b64\u5916\uff0c\u6578\u64da\u5eab\u9084\u6703\u5b9a\u671f\u5275\u5efa\u5feb\u7167\uff0c\u9019\u4e9b\u5feb\u7167\u4fdd\u5b58\u4e86\u6578\u64da\u5eab\u5728\u7279\u5b9a\u6642\u9593\u9ede\u7684\u72c0\u614b\u3002<\/p>\n<p>\u7576\u7528\u6236\u9700\u8981\u9032\u884c\u9583\u56de\u64cd\u4f5c\u6642\uff0c\u7cfb\u7d71\u6703\u6839\u64da\u65e5\u8a8c\u548c\u5feb\u7167\u7684\u4fe1\u606f\uff0c\u5c07\u6578\u64da\u5eab\u6062\u5fa9\u5230\u6307\u5b9a\u7684\u6642\u9593\u9ede\u3002\u9019\u4e00\u904e\u7a0b\u901a\u5e38\u662f\u81ea\u52d5\u5316\u7684\uff0c\u4e26\u4e14\u4e0d\u9700\u8981\u7528\u6236\u9032\u884c\u8907\u96dc\u7684\u64cd\u4f5c\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e9%96%83%e5%9b%9e%e7%9a%84%e9%a1%9e%e5%9e%8b-OPxoWIirhI\">\u6578\u64da\u5eab\u9583\u56de\u7684\u985e\u578b<\/h2>\n<ul>\n<li><strong>\u9583\u56de\u67e5\u8a62\uff08Flashback Query\uff09<\/strong>: \u5141\u8a31\u7528\u6236\u67e5\u8a62\u67d0\u4e00\u6642\u9593\u9ede\u7684\u6578\u64da\uff0c\u9019\u5c0d\u65bc\u6aa2\u67e5\u6578\u64da\u8b8a\u66f4\u975e\u5e38\u6709\u7528\u3002<\/li>\n<li><strong>\u9583\u56de\u8868\uff08Flashback Table\uff09<\/strong>: \u7528\u65bc\u6062\u5fa9\u6574\u500b\u8868\u5230\u67d0\u4e00\u6642\u9593\u9ede\uff0c\u9069\u5408\u65bc\u5927\u7bc4\u570d\u7684\u6578\u64da\u6062\u5fa9\u3002<\/li>\n<li><strong>\u9583\u56de\u6578\u64da\u5eab\uff08Flashback Database\uff09<\/strong>: \u9019\u662f\u6700\u5168\u9762\u7684\u9583\u56de\u65b9\u5f0f\uff0c\u80fd\u5920\u5c07\u6574\u500b\u6578\u64da\u5eab\u6062\u5fa9\u5230\u67d0\u4e00\u6642\u9593\u9ede\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8%e6%95%b8%e6%93%9a%e5%ba%ab%e9%96%83%e5%9b%9e%e6%8a%80%e8%a1%93-OPxoWIirhI\">\u5982\u4f55\u4f7f\u7528\u6578\u64da\u5eab\u9583\u56de\u6280\u8853<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4f7f\u7528\u6578\u64da\u5eab\u9583\u56de\u6280\u8853\u7684\u4e00\u4e9b\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e5%95%9f%e7%94%a8%e9%96%83%e5%9b%9e%e5%8a%9f%e8%83%bd-OPxoWIirhI\">1. \u555f\u7528\u9583\u56de\u529f\u80fd<\/h3>\n<p>\u5728\u4f7f\u7528\u9583\u56de\u6280\u8853\u4e4b\u524d\uff0c\u5fc5\u9808\u78ba\u4fdd\u6578\u64da\u5eab\u7684\u9583\u56de\u529f\u80fd\u5df2\u7d93\u555f\u7528\u3002\u9019\u901a\u5e38\u6d89\u53ca\u5230\u914d\u7f6e\u6578\u64da\u5eab\u7684\u53c3\u6578\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre><code>ALTER DATABASE FLASHBACK ON;<\/code><\/pre>\n<h3 id=\"2-%e5%89%b5%e5%bb%ba%e5%bf%ab%e7%85%a7-OPxoWIirhI\">2. \u5275\u5efa\u5feb\u7167<\/h3>\n<p>\u5b9a\u671f\u5275\u5efa\u5feb\u7167\u662f\u78ba\u4fdd\u6578\u64da\u5eab\u53ef\u4ee5\u9032\u884c\u9583\u56de\u7684\u95dc\u9375\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u5275\u5efa\u5feb\u7167\uff1a<\/p>\n<pre><code>CREATE FLASHBACK TABLE my_table AS SELECT * FROM my_table;<\/code><\/pre>\n<h3 id=\"3-%e5%9f%b7%e8%a1%8c%e9%96%83%e5%9b%9e%e6%93%8d%e4%bd%9c-OPxoWIirhI\">3. \u57f7\u884c\u9583\u56de\u64cd\u4f5c<\/h3>\n<p>\u7576\u9700\u8981\u6062\u5fa9\u6578\u64da\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u9032\u884c\u9583\u56de\uff1a<\/p>\n<pre><code>FLASHBACK TABLE my_table TO TIMESTAMP (SYSTIMESTAMP - INTERVAL '10' MINUTE);<\/code><\/pre>\n<p>\u9019\u689d\u547d\u4ee4\u5c07\u8868\u6062\u5fa9\u523010\u5206\u9418\u524d\u7684\u72c0\u614b\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e9%96%83%e5%9b%9e%e7%9a%84%e5%84%aa%e5%8b%a2-OPxoWIirhI\">\u6578\u64da\u5eab\u9583\u56de\u7684\u512a\u52e2<\/h2>\n<ul>\n<li><strong>\u5feb\u901f\u6062\u5fa9<\/strong>: \u6578\u64da\u5eab\u9583\u56de\u6280\u8853\u80fd\u5920\u5728\u5e7e\u79d2\u9418\u5167\u6062\u5fa9\u6578\u64da\uff0c\u6975\u5927\u5730\u6e1b\u5c11\u4e86\u505c\u6a5f\u6642\u9593\u3002<\/li>\n<li><strong>\u6e1b\u5c11\u6578\u64da\u4e1f\u5931<\/strong>: \u901a\u904e\u5b9a\u671f\u5275\u5efa\u5feb\u7167\uff0c\u80fd\u5920\u6709\u6548\u964d\u4f4e\u6578\u64da\u4e1f\u5931\u7684\u98a8\u96aa\u3002<\/li>\n<li><strong>\u7c21\u5316\u7ba1\u7406<\/strong>: \u6578\u64da\u5eab\u7ba1\u7406\u54e1\u53ef\u4ee5\u8f15\u9b06\u5730\u9032\u884c\u6578\u64da\u6062\u5fa9\uff0c\u800c\u4e0d\u9700\u8981\u8907\u96dc\u7684\u64cd\u4f5c\u6d41\u7a0b\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-OPxoWIirhI\">\u7d50\u8ad6<\/h2>\n<p>\u6578\u64da\u5eab\u9583\u56de\u6280\u8853\u662f\u4e00\u9805\u5f37\u5927\u7684\u5de5\u5177\uff0c\u80fd\u5920\u5e6b\u52a9\u4f01\u696d\u5728\u9762\u5c0d\u6578\u64da\u4e1f\u5931\u6216\u640d\u58de\u6642\u8fc5\u901f\u6062\u5fa9\u3002\u901a\u904e\u4e86\u89e3\u5176\u5de5\u4f5c\u539f\u7406\u548c\u61c9\u7528\uff0c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u53ef\u4ee5\u6709\u6548\u5730\u4fdd\u8b77\u6578\u64da\uff0c\u78ba\u4fdd\u696d\u52d9\u7684\u9023\u7e8c\u6027\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u53ef\u7528\u6027\u548c\u53ef\u9760\u6027\u7684\u4f01\u696d\u4f86\u8aaa\uff0c\u638c\u63e1\u6578\u64da\u5eab\u9583\u56de\u6280\u80fd\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u5982\u4f55\u5728\u60a8\u7684\u696d\u52d9\u4e2d\u5be6\u65bd\u9019\u4e9b\u6280\u8853\u6709\u8208\u8da3\uff0c\u6216\u8005\u60f3\u4e86\u89e3\u66f4\u591a\u95dc\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u53ca\u5176\u4ed6\u76f8\u95dc\u670d\u52d9\u7684\u4fe1\u606f\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5feb\u901f\u638c\u63e1\u6578\u64da\u5eab\u9583\u56de\u6280\u80fd\uff0c\u6df1\u5165\u89e3\u6790\u9583\u7a0b\uff0c\u52a9\u60a8\u8f15\u9b06\u61c9\u5c0d\u6578\u64da\u6062\u5fa9\u8207\u7ba1\u7406\u6311\u6230\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-166691","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/166691","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=166691"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/166691\/revisions"}],"predecessor-version":[{"id":166692,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/166691\/revisions\/166692"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=166691"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=166691"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=166691"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}