{"id":162763,"date":"2024-11-04T17:48:19","date_gmt":"2024-11-04T09:48:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/162763\/"},"modified":"2024-11-04T17:48:20","modified_gmt":"2024-11-04T09:48:20","slug":"%e8%ac%9b%e8%bf%b0oracle-undo%e8%a1%a8%e7%a9%ba%e9%96%93%e9%87%8d%e5%bb%ba%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/162763\/","title":{"rendered":"\u8b1b\u8ff0Oracle UNDO\u8868\u7a7a\u9593\u91cd\u5efa\u65b9\u6cd5"},"content":{"rendered":"<h1 id=\"%e8%ac%9b%e8%bf%b0oracle-undo%e8%a1%a8%e7%a9%ba%e9%96%93%e9%87%8d%e5%bb%ba%e6%96%b9%e6%b3%95-IFKqPUnGoB\">\u8b1b\u8ff0Oracle UNDO\u8868\u7a7a\u9593\u91cd\u5efa\u65b9\u6cd5<\/h1>\n<p>\u5728Oracle\u6578\u64da\u5eab\u4e2d\uff0cUNDO\u8868\u7a7a\u9593\u662f\u7528\u4f86\u5b58\u5132\u4e8b\u52d9\u7684\u56de\u6efe\u4fe1\u606f\uff0c\u9019\u5c0d\u65bc\u6578\u64da\u7684\u5b8c\u6574\u6027\u548c\u4e00\u81f4\u6027\u81f3\u95dc\u91cd\u8981\u3002\u96a8\u8457\u6642\u9593\u7684\u63a8\u79fb\uff0cUNDO\u8868\u7a7a\u9593\u53ef\u80fd\u6703\u8b8a\u5f97\u788e\u7247\u5316\u6216\u4e0d\u518d\u6709\u6548\uff0c\u9019\u6642\u5019\u91cd\u5efaUNDO\u8868\u7a7a\u9593\u5c31\u6210\u70ba\u4e86\u4e00\u500b\u5fc5\u8981\u7684\u6b65\u9a5f\u3002\u672c\u6587\u5c07\u8a73\u7d30\u4ecb\u7d39\u5982\u4f55\u91cd\u5efaOracle UNDO\u8868\u7a7a\u9593\u7684\u65b9\u6cd5\u3002<\/p>\n<h2 id=\"undo%e8%a1%a8%e7%a9%ba%e9%96%93%e7%9a%84%e6%a6%82%e5%bf%b5-IFKqPUnGoB\">UNDO\u8868\u7a7a\u9593\u7684\u6982\u5ff5<\/h2>\n<p>UNDO\u8868\u7a7a\u9593\u7684\u4e3b\u8981\u529f\u80fd\u662f\u4fdd\u5b58\u6578\u64da\u7684\u6b77\u53f2\u7248\u672c\uff0c\u4ee5\u4fbf\u5728\u4e8b\u52d9\u5931\u6557\u6216\u7528\u6236\u8981\u6c42\u56de\u6efe\u6642\u80fd\u5920\u6062\u5fa9\u6578\u64da\u3002\u6bcf\u7576\u4e00\u500b\u4e8b\u52d9\u5c0d\u6578\u64da\u9032\u884c\u4fee\u6539\u6642\uff0cOracle\u6703\u5728UNDO\u8868\u7a7a\u9593\u4e2d\u5275\u5efa\u4e00\u500b\u76f8\u61c9\u7684\u8a18\u9304\u3002\u9019\u4e9b\u8a18\u9304\u4e0d\u50c5\u7528\u65bc\u56de\u6efe\u64cd\u4f5c\uff0c\u9084\u7528\u65bc\u652f\u6301\u8b80\u53d6\u4e00\u81f4\u6027\u3002<\/p>\n<h2 id=\"%e9%87%8d%e5%bb%baundo%e8%a1%a8%e7%a9%ba%e9%96%93%e7%9a%84%e5%bf%85%e8%a6%81%e6%80%a7-IFKqPUnGoB\">\u91cd\u5efaUNDO\u8868\u7a7a\u9593\u7684\u5fc5\u8981\u6027<\/h2>\n<p>\u96a8\u8457\u6578\u64da\u5eab\u7684\u904b\u884c\uff0cUNDO\u8868\u7a7a\u9593\u53ef\u80fd\u6703\u51fa\u73fe\u4ee5\u4e0b\u554f\u984c\uff1a<\/p>\n<ul>\n<li>\u788e\u7247\u5316\uff1a\u96a8\u8457\u4e8b\u52d9\u7684\u589e\u6e1b\uff0cUNDO\u8868\u7a7a\u9593\u4e2d\u7684\u7a7a\u9593\u53ef\u80fd\u6703\u8b8a\u5f97\u4e0d\u9023\u7e8c\uff0c\u5f71\u97ff\u6027\u80fd\u3002<\/li>\n<li>\u7a7a\u9593\u4e0d\u8db3\uff1a\u5982\u679cUNDO\u8868\u7a7a\u9593\u7684\u5927\u5c0f\u8a2d\u7f6e\u4e0d\u7576\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u7a7a\u9593\u4e0d\u8db3\uff0c\u5f71\u97ff\u6578\u64da\u5eab\u7684\u6b63\u5e38\u904b\u884c\u3002<\/li>\n<li>\u6578\u64da\u640d\u58de\uff1a\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0cUNDO\u8868\u7a7a\u9593\u4e2d\u7684\u6578\u64da\u53ef\u80fd\u6703\u640d\u58de\uff0c\u9019\u6703\u5f71\u97ff\u6578\u64da\u7684\u6062\u5fa9\u80fd\u529b\u3002<\/li>\n<\/ul>\n<h2 id=\"%e9%87%8d%e5%bb%baundo%e8%a1%a8%e7%a9%ba%e9%96%93%e7%9a%84%e6%ad%a5%e9%a9%9f-IFKqPUnGoB\">\u91cd\u5efaUNDO\u8868\u7a7a\u9593\u7684\u6b65\u9a5f<\/h2>\n<p>\u91cd\u5efaUNDO\u8868\u7a7a\u9593\u7684\u904e\u7a0b\u53ef\u4ee5\u5206\u70ba\u4ee5\u4e0b\u5e7e\u500b\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e7%a2%ba%e8%aa%8d%e7%95%b6%e5%89%8dundo%e8%a1%a8%e7%a9%ba%e9%96%93%e7%9a%84%e7%8b%80%e6%85%8b-IFKqPUnGoB\">1. \u78ba\u8a8d\u7576\u524dUNDO\u8868\u7a7a\u9593\u7684\u72c0\u614b<\/h3>\n<pre><code>SELECT tablespace_name, file_name, bytes, status \nFROM dba_data_files \nWHERE tablespace_name = 'UNDOTBS1';<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u8a9e\u53e5\u53ef\u4ee5\u5e6b\u52a9\u4f60\u67e5\u770b\u7576\u524dUNDO\u8868\u7a7a\u9593\u7684\u72c0\u614b\u548c\u5927\u5c0f\u3002<\/p>\n<h3 id=\"2-%e5%89%b5%e5%bb%ba%e6%96%b0%e7%9a%84undo%e8%a1%a8%e7%a9%ba%e9%96%93-IFKqPUnGoB\">2. \u5275\u5efa\u65b0\u7684UNDO\u8868\u7a7a\u9593<\/h3>\n<p>\u5728\u91cd\u5efa\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u5275\u5efa\u4e00\u500b\u65b0\u7684UNDO\u8868\u7a7a\u9593\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u8a9e\u53e5\u4f86\u5275\u5efa\uff1a<\/p>\n<pre><code>CREATE UNDO TABLESPACE undotbs2 \nDATAFILE 'undotbs2.dbf' SIZE 1G AUTOEXTEND ON;<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5c07\u5275\u5efa\u4e00\u500b\u540d\u70ba\u201cundotbs2\u201d\u7684\u65b0UNDO\u8868\u7a7a\u9593\uff0c\u4e26\u8a2d\u7f6e\u5176\u521d\u59cb\u5927\u5c0f\u70ba1GB\u3002<\/p>\n<h3 id=\"3-%e8%a8%ad%e7%bd%ae%e6%96%b0%e7%9a%84undo%e8%a1%a8%e7%a9%ba%e9%96%93%e7%82%ba%e9%bb%98%e8%aa%8d-IFKqPUnGoB\">3. \u8a2d\u7f6e\u65b0\u7684UNDO\u8868\u7a7a\u9593\u70ba\u9ed8\u8a8d<\/h3>\n<p>\u5275\u5efa\u5b8c\u65b0\u7684UNDO\u8868\u7a7a\u9593\u5f8c\uff0c\u9700\u8981\u5c07\u5176\u8a2d\u7f6e\u70ba\u9ed8\u8a8d\u7684UNDO\u8868\u7a7a\u9593\uff1a<\/p>\n<pre><code>ALTER SYSTEM SET UNDO_TABLESPACE = undotbs2;<\/code><\/pre>\n<h3 id=\"4-%e5%88%aa%e9%99%a4%e8%88%8a%e7%9a%84undo%e8%a1%a8%e7%a9%ba%e9%96%93-IFKqPUnGoB\">4. \u522a\u9664\u820a\u7684UNDO\u8868\u7a7a\u9593<\/h3>\n<p>\u5728\u78ba\u8a8d\u65b0\u7684UNDO\u8868\u7a7a\u9593\u904b\u884c\u6b63\u5e38\u5f8c\uff0c\u53ef\u4ee5\u522a\u9664\u820a\u7684UNDO\u8868\u7a7a\u9593\uff1a<\/p>\n<pre><code>DROP TABLESPACE undotbs1 INCLUDING CONTENTS AND DATAFILES;<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5c07\u522a\u9664\u820a\u7684UNDO\u8868\u7a7a\u9593\u53ca\u5176\u6240\u6709\u5167\u5bb9\u548c\u6578\u64da\u6587\u4ef6\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-IFKqPUnGoB\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u91cd\u5efaUNDO\u8868\u7a7a\u9593\u7684\u904e\u7a0b\u4e2d\uff0c\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li>\u5728\u9ad8\u5cf0\u671f\u9032\u884c\u91cd\u5efa\u53ef\u80fd\u6703\u5f71\u97ff\u6578\u64da\u5eab\u6027\u80fd\uff0c\u5efa\u8b70\u5728\u4f4e\u5cf0\u671f\u9032\u884c\u3002<\/li>\n<li>\u5728\u522a\u9664\u820a\u7684UNDO\u8868\u7a7a\u9593\u4e4b\u524d\uff0c\u52d9\u5fc5\u78ba\u8a8d\u65b0\u7684UNDO\u8868\u7a7a\u9593\u5df2\u7d93\u6b63\u5e38\u904b\u884c\u3002<\/li>\n<li>\u5b9a\u671f\u76e3\u63a7UNDO\u8868\u7a7a\u9593\u7684\u4f7f\u7528\u60c5\u6cc1\uff0c\u4ee5\u4fbf\u53ca\u6642\u9032\u884c\u8abf\u6574\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-IFKqPUnGoB\">\u7e3d\u7d50<\/h2>\n<p>\u91cd\u5efaOracle UNDO\u8868\u7a7a\u9593\u662f\u4e00\u500b\u91cd\u8981\u7684\u7dad\u8b77\u4efb\u52d9\uff0c\u53ef\u4ee5\u5e6b\u52a9\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002\u901a\u904e\u4e0a\u8ff0\u6b65\u9a5f\uff0c\u60a8\u53ef\u4ee5\u6709\u6548\u5730\u91cd\u5efaUNDO\u8868\u7a7a\u9593\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\u548c\u4e00\u81f4\u6027\u3002\u5982\u679c\u60a8\u9700\u8981\u66f4\u591a\u6709\u95dc<code><a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a><\/code>\u548c<code><a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a><\/code>\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8a73\u7d30\u8cc7\u6599\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3Oracle UNDO\u8868\u7a7a\u9593\u91cd\u5efa\u65b9\u6cd5\uff0c\u63d0\u5347\u6578\u64da\u5eab\u6027\u80fd\u8207\u6062\u5fa9\u80fd\u529b\uff0c\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u8207\u5b8c\u6574\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-162763","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/162763","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=162763"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/162763\/revisions"}],"predecessor-version":[{"id":162764,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/162763\/revisions\/162764"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=162763"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=162763"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=162763"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}