{"id":179658,"date":"2024-11-09T03:43:25","date_gmt":"2024-11-08T19:43:25","guid":{"rendered":"https:\/\/server.hk\/cnblog\/179658\/"},"modified":"2024-11-09T03:43:25","modified_gmt":"2024-11-08T19:43:25","slug":"%e5%a6%82%e4%bd%95%e5%9c%a8-oracle-%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e9%96%8b%e5%95%9f%e9%96%83%e5%9b%9e%e5%8a%9f%e8%83%bd%ef%bc%9f-oracle-%e6%95%b8%e6%93%9a%e5%ba%ab%e9%96%8b%e5%95%9f%e9%96%83","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/179658\/","title":{"rendered":"\u5982\u4f55\u5728 Oracle \u6578\u64da\u5eab\u4e2d\u958b\u555f\u9583\u56de\u529f\u80fd\uff1f (oracle \u6578\u64da\u5eab\u958b\u555f\u9583\u56de)"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e5%9c%a8-oracle-%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e9%96%8b%e5%95%9f%e9%96%83%e5%9b%9e%e5%8a%9f%e8%83%bd%ef%bc%9f-WjyiLMfqaY\">\u5982\u4f55\u5728 Oracle \u6578\u64da\u5eab\u4e2d\u958b\u555f\u9583\u56de\u529f\u80fd\uff1f<\/h1>\n<p>Oracle \u6578\u64da\u5eab\u7684\u9583\u56de\u529f\u80fd\u662f\u4e00\u9805\u5f37\u5927\u7684\u7279\u6027\uff0c\u5141\u8a31\u7528\u6236\u5728\u6578\u64da\u4e1f\u5931\u6216\u932f\u8aa4\u64cd\u4f5c\u5f8c\u8fc5\u901f\u6062\u5fa9\u6578\u64da\u3002\u9019\u9805\u529f\u80fd\u4e0d\u50c5\u80fd\u5920\u63d0\u9ad8\u6578\u64da\u7684\u53ef\u7528\u6027\uff0c\u9084\u80fd\u6e1b\u5c11\u6578\u64da\u6062\u5fa9\u7684\u6642\u9593\u548c\u6210\u672c\u3002\u672c\u6587\u5c07\u8a73\u7d30\u4ecb\u7d39\u5982\u4f55\u5728 Oracle \u6578\u64da\u5eab\u4e2d\u958b\u555f\u9583\u56de\u529f\u80fd\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u6b65\u9a5f\u548c\u793a\u4f8b\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e9%96%83%e5%9b%9e%e5%8a%9f%e8%83%bd%ef%bc%9f-WjyiLMfqaY\">\u4ec0\u9ebc\u662f\u9583\u56de\u529f\u80fd\uff1f<\/h2>\n<p>\u9583\u56de\u529f\u80fd\u662f Oracle \u6578\u64da\u5eab\u7684\u4e00\u9805\u6280\u8853\uff0c\u5141\u8a31\u7528\u6236\u5c07\u6578\u64da\u6062\u5fa9\u5230\u904e\u53bb\u7684\u67d0\u500b\u6642\u9593\u9ede\u3002\u9019\u5c0d\u65bc\u8aa4\u522a\u9664\u6578\u64da\u6216\u4e0d\u5c0f\u5fc3\u4fee\u6539\u6578\u64da\u7684\u60c5\u6cc1\u7279\u5225\u6709\u7528\u3002\u9583\u56de\u6280\u8853\u7684\u6838\u5fc3\u5728\u65bc Oracle \u7684\u65e5\u8a8c\u7ba1\u7406\u7cfb\u7d71\uff0c\u901a\u904e\u4fdd\u5b58\u6578\u64da\u7684\u6b77\u53f2\u7248\u672c\uff0c\u4f7f\u7528\u8005\u53ef\u4ee5\u8f15\u9b06\u5730\u56de\u5230\u4e4b\u524d\u7684\u72c0\u614b\u3002<\/p>\n<h2 id=\"%e9%96%8b%e5%95%9f%e9%96%83%e5%9b%9e%e5%8a%9f%e8%83%bd%e7%9a%84%e5%89%8d%e6%8f%90%e6%a2%9d%e4%bb%b6-WjyiLMfqaY\">\u958b\u555f\u9583\u56de\u529f\u80fd\u7684\u524d\u63d0\u689d\u4ef6<\/h2>\n<p>\u5728\u555f\u7528\u9583\u56de\u529f\u80fd\u4e4b\u524d\uff0c\u60a8\u9700\u8981\u78ba\u4fdd\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li>\u60a8\u7684 Oracle \u6578\u64da\u5eab\u7248\u672c\u5fc5\u9808\u652f\u6301\u9583\u56de\u529f\u80fd\uff08\u901a\u5e38\u662f Oracle 10g \u53ca\u4ee5\u4e0a\u7248\u672c\uff09\u3002<\/li>\n<li>\u6578\u64da\u5eab\u5fc5\u9808\u5728 <code>ARCHIVELOG<\/code> \u6a21\u5f0f\u4e0b\u904b\u884c\u3002<\/li>\n<li>\u9700\u8981\u6709\u8db3\u5920\u7684\u78c1\u789f\u7a7a\u9593\u4f86\u5b58\u5132\u9583\u56de\u65e5\u8a8c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e9%96%8b%e5%95%9f%e9%96%83%e5%9b%9e%e5%8a%9f%e8%83%bd%e7%9a%84%e6%ad%a5%e9%a9%9f-WjyiLMfqaY\">\u958b\u555f\u9583\u56de\u529f\u80fd\u7684\u6b65\u9a5f<\/h2>\n<h3 id=\"1-%e6%aa%a2%e6%9f%a5%e6%95%b8%e6%93%9a%e5%ba%ab%e6%a8%a1%e5%bc%8f-WjyiLMfqaY\">1. \u6aa2\u67e5\u6578\u64da\u5eab\u6a21\u5f0f<\/h3>\n<p>\u9996\u5148\uff0c\u60a8\u9700\u8981\u6aa2\u67e5\u6578\u64da\u5eab\u662f\u5426\u5728 <code>ARCHIVELOG<\/code> \u6a21\u5f0f\u4e0b\u904b\u884c\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u67e5\u8a62\u4f86\u6aa2\u67e5\uff1a<\/p>\n<pre><code>SELECT log_mode FROM v$database;<\/code><\/pre>\n<p>\u5982\u679c\u8fd4\u56de\u7684\u7d50\u679c\u662f <code>NOARCHIVE<\/code>\uff0c\u5247\u9700\u8981\u5c07\u6578\u64da\u5eab\u5207\u63db\u5230 <code>ARCHIVELOG<\/code> \u6a21\u5f0f\u3002<\/p>\n<h3 id=\"2-%e5%88%87%e6%8f%9b%e5%88%b0-archivelog-%e6%a8%a1%e5%bc%8f-WjyiLMfqaY\">2. \u5207\u63db\u5230 ARCHIVELOG \u6a21\u5f0f<\/h3>\n<p>\u5982\u679c\u60a8\u7684\u6578\u64da\u5eab\u5c1a\u672a\u5728 <code>ARCHIVELOG<\/code> \u6a21\u5f0f\u4e0b\u904b\u884c\uff0c\u53ef\u4ee5\u6309\u7167\u4ee5\u4e0b\u6b65\u9a5f\u9032\u884c\u5207\u63db\uff1a<\/p>\n<pre><code>SHUTDOWN IMMEDIATE;\nSTARTUP MOUNT;\nALTER DATABASE ARCHIVELOG;\nALTER DATABASE OPEN;<\/code><\/pre>\n<h3 id=\"3-%e5%95%9f%e7%94%a8%e9%96%83%e5%9b%9e%e5%8a%9f%e8%83%bd-WjyiLMfqaY\">3. \u555f\u7528\u9583\u56de\u529f\u80fd<\/h3>\n<p>\u5728\u78ba\u8a8d\u6578\u64da\u5eab\u5df2\u7d93\u5728 <code>ARCHIVELOG<\/code> \u6a21\u5f0f\u4e0b\u904b\u884c\u5f8c\uff0c\u60a8\u53ef\u4ee5\u555f\u7528\u9583\u56de\u529f\u80fd\u3002\u4f7f\u7528\u4ee5\u4e0b SQL \u547d\u4ee4\uff1a<\/p>\n<pre><code>ALTER DATABASE FLASHBACK ON;<\/code><\/pre>\n<h3 id=\"4-%e8%a8%ad%e7%bd%ae%e9%96%83%e5%9b%9e%e5%8d%80%e5%9f%9f-WjyiLMfqaY\">4. \u8a2d\u7f6e\u9583\u56de\u5340\u57df<\/h3>\n<p>\u9583\u56de\u529f\u80fd\u9700\u8981\u4e00\u500b\u9583\u56de\u5340\u57df\u4f86\u5b58\u5132\u9583\u56de\u65e5\u8a8c\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u4f86\u8a2d\u7f6e\u9583\u56de\u5340\u57df\uff1a<\/p>\n<pre><code>ALTER SYSTEM SET db_flashback_retention_target = 1440; -- \u8a2d\u7f6e\u4fdd\u7559\u6642\u9593\u70ba 1440 \u5206\u9418\nALTER SYSTEM SET db_recovery_file_dest = '\/path\/to\/flashback\/area'; -- \u8a2d\u7f6e\u9583\u56de\u5340\u57df\u7684\u8def\u5f91<\/code><\/pre>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e9%96%83%e5%9b%9e%e5%8a%9f%e8%83%bd-WjyiLMfqaY\">\u4f7f\u7528\u9583\u56de\u529f\u80fd<\/h2>\n<p>\u4e00\u65e6\u9583\u56de\u529f\u80fd\u555f\u7528\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u4f86\u67e5\u8a62\u9583\u56de\u7684\u6642\u9593\u9ede\uff1a<\/p>\n<pre><code>SELECT flashback_scn, flashback_time FROM v$database_flashback; <\/code><\/pre>\n<p>\u8981\u5c07\u6578\u64da\u5eab\u6062\u5fa9\u5230\u67d0\u500b\u6642\u9593\u9ede\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code>FLASHBACK DATABASE TO TIMESTAMP (SYSTIMESTAMP - INTERVAL '10' MINUTE);<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-WjyiLMfqaY\">\u7e3d\u7d50<\/h2>\n<p>\u5728 Oracle \u6578\u64da\u5eab\u4e2d\u958b\u555f\u9583\u56de\u529f\u80fd\u662f\u4e00\u500b\u76f8\u5c0d\u7c21\u55ae\u7684\u904e\u7a0b\uff0c\u53ea\u9700\u78ba\u4fdd\u6578\u64da\u5eab\u5728 <code>ARCHIVELOG<\/code> \u6a21\u5f0f\u4e0b\u904b\u884c\uff0c\u4e26\u8a2d\u7f6e\u597d\u9583\u56de\u5340\u57df\u3002\u9019\u9805\u529f\u80fd\u4e0d\u50c5\u80fd\u5920\u5e6b\u52a9\u7528\u6236\u5feb\u901f\u6062\u5fa9\u6578\u64da\uff0c\u9084\u80fd\u63d0\u9ad8\u6578\u64da\u7684\u5b89\u5168\u6027\u548c\u53ef\u9760\u6027\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u53ef\u7528\u6027\u548c\u6578\u64da\u4fdd\u8b77\u7684\u61c9\u7528\u5834\u666f\uff0c\u9583\u56de\u529f\u80fd\u7121\u7591\u662f\u4e00\u500b\u91cd\u8981\u7684\u5de5\u5177\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u7528\u6236\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u985e\u578b\u7684 <a href=\"https:\/\/server.hk\">\u4e91\u670d\u52a1\u5668<\/a>\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u53ef\u9760\u7684\u670d\u52d9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5728 Oracle \u6578\u64da\u5eab\u4e2d\u555f\u7528\u9583\u56de\u529f\u80fd\uff0c\u5feb\u901f\u6062\u5fa9\u6578\u64da\uff0c\u63d0\u5347\u6578\u64da\u5b89\u5168\u6027\u8207\u7ba1\u7406\u6548\u7387\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-179658","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179658","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=179658"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179658\/revisions"}],"predecessor-version":[{"id":179659,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179658\/revisions\/179659"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=179658"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=179658"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=179658"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}