{"id":10582,"date":"2026-02-10T02:00:00","date_gmt":"2026-02-09T18:00:00","guid":{"rendered":"http:\/\/www.jointchina.com\/index.php\/uncategorized\/10582\/"},"modified":"2026-02-10T02:00:00","modified_gmt":"2026-02-09T18:00:00","slug":"oracle%e8%af%af%e5%88%a0%e6%95%b0%e6%8d%ae%e5%88%ab%e6%85%8c%e5%bc%a0%ef%bc%812025%e5%b9%b4%e8%b5%84%e6%b7%b1dba%e7%9a%84%e4%b8%89%e7%ba%a7%e6%81%a2%e5%a4%8d%e7%ad%96%e7%95%a5%e5%ae%9e%e6%88%98","status":"publish","type":"post","link":"http:\/\/www.jointchina.com\/index.php\/new\/10582\/","title":{"rendered":"Oracle\u8bef\u5220\u6570\u636e\u522b\u614c\u5f20\uff012025\u5e74\u8d44\u6df1DBA\u7684\u4e09\u7ea7\u6062\u590d\u7b56\u7565\u5b9e\u6218\u6307\u5357"},"content":{"rendered":"

\u5357\u4eac\u6570\u636e\u6062\u590d<\/p>\n

\u51cc\u6668\u4e09\u70b9\u7684\u544a\u8b66\u94c3\u58f0\u523a\u7834\u5bc2\u9759\uff0c\u65b0\u6765\u7684\u8fd0\u7ef4\u5c0f\u54e5\u98a4\u6296\u7740\u58f0\u97f3\u6c47\u62a5\uff1a”\u751f\u4ea7\u5e93\u5ba2\u6237\u8ba2\u5355\u8868\u88ab\u6279\u91cfUPDATE\u9519\u6761\u4ef6…”. \u57282025\u5e74\u4e91\u539f\u751f\u4e0e\u5b9e\u65f6\u6570\u4ed3\u5927\u884c\u5176\u9053\u7684\u6280\u672f\u6d6a\u6f6e\u4e2d\uff0cOracle\u4f9d\u7136\u7262\u7262\u5360\u636e\u6838\u5fc3\u4ea4\u6613\u7cfb\u7edf\u7684C\u4f4d\u3002\u5f53SELECT\u79d2\u53d8DELETE\u7684\u60e8\u6848\u53d1\u751f\u65f6\uff0c\u4f60\u9700\u8981\u7684\u4e0d\u662f\u540e\u6094\u836f\uff0c\u800c\u662f\u70d9\u5728DNA\u91cc\u7684\u6570\u636e\u6062\u590d\u808c\u8089\u8bb0\u5fc6\u3002<\/p>\n

\u7b2c\u4e00\u91cd\uff1a\u65f6\u95f4\u673a\u5668\u964d\u4e34\u2014\u2014Flashback\u9b54\u6cd5\u5168\u89e3<\/strong><\/p>\n

\u95ea\u56de\u6280\u672f\u7edd\u975e2025\u5e74\u7684\u65b0\u6982\u5ff5\uff0c\u4f46\u5f53Oracle 21c\u5c06UNDO_RETENTION\u4e0a\u9650\u6269\u5c55\u5230\u60ca\u4eba\u7684365\u5929\u65f6\uff0cDBA\u638c\u5fc3\u5df2\u63e1\u4f4f\u65f6\u7a7a\u5bc6\u94a5\u3002\u4e0a\u5468\u67d0\u533b\u7597\u5668\u68b0\u516c\u53f8\u906d\u9047\u6076\u610f\u811a\u672c\u653b\u51fb\uff0c\u6b63\u662f\u901a\u8fc7\u95ea\u56de\u67e5\u8be2\u9501\u5b9a\u5f02\u5e38\u65f6\u95f4\u70b9\uff1a<\/p>\n

SELECT FROM patient_records AS OF TIMESTAMP TO_TIMESTAMP('2025-03-15 14:30:00', 'YYYY-MM-DD HH24:MI:SS') WHERE status=0;<\/code> \u5728\u786e\u5b9a\u6570\u636e\u72b6\u6001\u540e\uff0c\u4f7f\u7528\u95ea\u56de\u8868\u529f\u80fd\u76f4\u63a5\u56de\u9000\u6574\u8868\uff1a<\/p>\n

FLASHBACK TABLE inventory TO TIMESTAMP TO_TIMESTAMP('2025-03-15 14:25:00')<\/code>\u3002\u6ce8\u610f\u9700\u63d0\u524d\u5f00\u542f\u884c\u79fb\u52a8ALTER TABLE inventory ENABLE ROW MOVEMENT<\/code>\u3002<\/p>\n

\u66f4\u9707\u64bc\u7684\u662f\u95ea\u56de\u6570\u636e\u5e93\uff08Flashback Database\uff09\u3002\u67d0\u8bc1\u5238\u4ea4\u6613\u6240DBA\u8bef\u5220\u5206\u533a\u8868\u540e\uff0c\u901a\u8fc7ALTER DATABASE FLASHBACK ON<\/code>\u5f00\u542f\u95ea\u56de\u65e5\u5fd7\u5199\u5165\uff0c\u914d\u5408\u521b\u5efa\u8fd8\u539f\u70b9CREATE RESTORE POINT before_drop GUARANTEE FLASHBACK DATABASE<\/code>\uff0c\u6700\u7ec8\u4ece\u6302\u8f7d\u72b6\u6001\u6267\u884cFLASHBACK DATABASE TO RESTORE POINT before_drop<\/code>\uff0c\u4ec5\u4e22\u593117\u79d2\u4ea4\u6613\u6570\u636e\u3002\u9700\u8b66\u60d5\u7684\u662f\uff0c\u8be5\u64cd\u4f5c\u4f1a\u56de\u9000\u6574\u4e2a\u6570\u636e\u5e93\uff0c\u52a1\u5fc5\u63d0\u524d\u6c9f\u901a\u4e1a\u52a1\u7a97\u53e3\u3002<\/p>\n

\u7b2c\u4e8c\u91cd\uff1a\u6398\u5730\u4e09\u5c3a\u2014\u2014UNDO\u4e0e\u95ea\u56de\u65e5\u5fd7\u6df1\u5ea6\u89e3\u6790<\/strong><\/p>\n

\u5f53\u95ea\u56de\u65f6\u95f4\u7a97\u5931\u6548\uff08\u5982UNDO\u8868\u7a7a\u95f4\u88ab\u8986\u76d6\uff09\uff0c\u9700\u6df1\u5165Oracle\u7684”\u65f6\u5149\u80f6\u7247”\u2014\u2014UNDO\u8bb0\u5f55\u3002\u67d0\u94f6\u884c\u51cc\u6668\u6279\u91cf\u4f5c\u4e1a\u8bef\u5220\u767e\u4e07\u7ea7\u8d26\u6237\u6d41\u6c34\uff0c\u901a\u8fc7dump undo block\u5b9a\u4f4d\u4e8b\u52a1\u69fd\uff1a<\/p>\n

SELECT XID, OPERATION, SEG_OWNER, SEG_NAME FROM FLASHBACK_TRANSACTION_QUERY WHERE TABLE_NAME='ACCOUNT_FLOW' AND COMMIT_TIMESTAMP > SYSTIMESTAMP - INTERVAL '60' MINUTE;<\/code> \u6355\u83b7\u5230XID: 08001100B2030000\u540e\uff0c\u4f7f\u7528FLASHBACK TABLE account_flow TO BEFORE DROP<\/code>\u7ed3\u5408SCN\u7cbe\u51c6\u56de\u9000\u3002<\/p>\n

\u9488\u5bf9DDL\u8bef\u64cd\u4f5c\uff08\u5982DROP TABLE\uff09\uff0c\u95ea\u56de\u4e22\u5f03\uff08Flashback Drop\uff09\u6210\u4e3a\u6551\u547d\u7a3b\u8349\u3002\u67d0\u653f\u52a1\u4e91\u5e73\u53f0\u8bef\u5220\u52a0\u5bc6\u8868\u7a7a\u95f4\u540e\uff0c\u901a\u8fc7SELECT original_name, droptime FROM recyclebin<\/code>\u786e\u8ba4\u5bf9\u8c61\uff0c\u518d\u6267\u884cFLASHBACK TABLE \"BIN$gk3lsld\/==$0\" TO BEFORE DROP RENAME TO emergency_backup<\/code>\u3002\u9700\u7279\u522b\u5173\u6ce8PURGE\u53c2\u6570\u5bf9\u56de\u6536\u7ad9\u81ea\u52a8\u6e05\u7406\u7684\u5f71\u54cd\uff0c\u5efa\u8bae\u8bbe\u7f6eRECYCLEBIN=ON<\/code>\u5e76\u76d1\u63a7\u7a7a\u95f4\u4f7f\u7528\u7387\u3002<\/p>\n

\u7b2c\u4e09\u91cd\uff1a\u7ec8\u6781\u5e95\u724c\u2014\u2014\u57fa\u4e8e\u5f52\u6863\u65e5\u5fd7\u7684\u7269\u7406\u6062\u590d<\/strong><\/p>\n

\u5f53\u95ea\u56de\u6280\u672f\u5168\u9762\u5931\u6548\uff08\u5982\u78c1\u76d8\u635f\u574f\uff09\uff0c\u57fa\u4e8eRMAN\u7684\u6062\u590d\u662f\u9632\u7ebf\u30022025\u5e74\u4e3b\u6d41\u4e91\u5e73\u53f0\u5df2\u5b9e\u73b0\u79d2\u7ea7\u5feb\u7167\uff0c\u4f46\u6df7\u5408\u4e91\u4f01\u4e1a\u4ecd\u9700\u638c\u63e1\u4f20\u7edf\u6280\u80fd\u3002\u67d0\u5236\u9020\u4f01\u4e1a\u5b58\u50a8\u9635\u5217\u6545\u969c\u540e\uff0cDBA\u6267\u884c\u5168\u5e93\u6062\u590d\uff1a<\/p>\n

RMAN> STARTUP MOUNT;
\nRMAN> RESTORE DATABASE UNTIL TIME \"TO_DATE('2025-05-18 11:00:00','YYYY-MM-DD HH24:MI:SS')\";
\nRMAN> RECOVER DATABASE;
\nRMAN> ALTER DATABASE OPEN RESETLOGS;<\/code> \u5173\u952e\u70b9\u5728\u4e8e\u6bcf\u65e5\u5907\u4efd\u9a8c\u8bc1\u7b56\u7565\uff0c\u5efa\u8bae\u91c7\u7528VALIDATE CHECK LOGICAL DATABASE<\/code>\u81ea\u52a8\u68c0\u6d4b\u5907\u4efd\u96c6\u5b8c\u6574\u5ea6\u3002<\/p>\n

\u5bf9\u4e8e\u5355\u8868\u6062\u590d\u573a\u666f\uff0c\u8868\u7a7a\u95f4\u65f6\u95f4\u70b9\u6062\u590d\uff08TSPITR\uff09\u66f4\u9ad8\u6548\u3002\u7535\u5546\u5927\u4fc3\u671f\u95f4\u4ef7\u683c\u8868\u88ab\u7834\u574f\u540e\uff0c\u901a\u8fc7RECOVER TABLESPACE product_ts UNTIL TIME '2025-06-20 20:15:00' AUXILIARY DESTINATION '+FRA'<\/code>\u4ec5\u752823\u5206\u949f\u6062\u590d190GB\u6570\u636e\u3002\u914d\u5408ZDLRA\uff08\u96f6\u6570\u636e\u4e22\u5931\u6062\u590d\u4e00\u4f53\u673a\uff09\u53ef\u5b9e\u73b0\u6062\u590d\u8fc7\u7a0b\u5bf9\u751f\u4ea7\u5e93\u96f6\u6027\u80fd\u5f71\u54cd\u3002<\/p>\n

\u95ee\u98981\uff1aFlashback\u6280\u672f\u80fd\u5426\u6062\u590dTRUNCATE\u64cd\u4f5c\uff1f<\/strong>
\n\u7b54\uff1a\u5e38\u89c4\u95ea\u56de\u67e5\u8be2\u65e0\u6cd5\u5904\u7406TRUNCATE\uff0c\u56e0\u8be5\u64cd\u4f5c\u76f4\u63a5\u91cd\u7f6e\u9ad8\u6c34\u4f4d\u7ebf\u3002\u4f46\u53ef\u901a\u8fc7\u4ee5\u4e0b\u65b9\u6848\u8865\u6551\uff1a1) \u4f7f\u7528Flashback Database\u56de\u9000\u6574\u4e2a\u5e93 2) \u901a\u8fc7RMAN\u6267\u884c\u8868\u7a7a\u95f4\u65f6\u95f4\u70b9\u6062\u590d 3) \u5229\u7528LogMiner\u4ece\u5f52\u6863\u65e5\u5fd7\u63d0\u53d6SQL\u91cd\u653e\uff08\u9700\u5f00\u542f\u8865\u5145\u65e5\u5fd7\uff09\u3002\u63a8\u8350\u5728\u5173\u952e\u4e1a\u52a1\u8868\u521b\u5efaDDL\u89e6\u53d1\u5668\u9632\u8303TRUNCATE\u3002<\/p>\n

<\/p>\n

\u95ee\u98982\uff1a\u4e91\u73af\u5883RDS\u4e0e\u81ea\u6cbb\u6570\u636e\u5e93\u6062\u590d\u6709\u4f55\u5dee\u5f02\uff1f<\/strong>
\n\u7b54\uff1aAWS RDS\/Oracle Cloud\u7b49\u6258\u7ba1\u670d\u52a1\u901a\u5e38\u5c01\u88c5\u5e95\u5c42\u547d\u4ee4\u3002OCI\u81ea\u6cbb\u6570\u636e\u5e93\uff1a1) \u901a\u8fc7\u63a7\u5236\u53f0”\u5907\u4efd\u4e0e\u6062\u590d”\u521b\u5efa\u81ea\u5b9a\u4e49\u8fd8\u539f\u70b9 2) \u4f7f\u7528”\u514b\u9686\u6570\u636e\u5e93”\u529f\u80fd\u521b\u5efa\u65f6\u95f4\u70b9\u526f\u672c 3) \u901a\u8fc7Data Pump\u4ece\u514b\u9686\u5e93\u5bfc\u51fa\u6570\u636e\u3002\u6700\u5927\u4f18\u52bf\u662f\u652f\u6301\u5206\u949f\u7ea7\u6570\u636e\u5e93\u56de\u6eda\uff0c\u4f46\u9700\u6ce8\u610f\u5b58\u50a8\u7a7a\u95f4\u8d39\u7528\u3002<\/p>\n

<\/p>\n

\u897f\u6570\u79d1\u6280\u6570\u636e\u6062\u590d \u7f51\u7ad9\uff1ahttp:\/\/www.jointchina.com<\/p>\n","protected":false},"excerpt":{"rendered":"

\u5357\u4eac\u6570\u636e\u6062\u590d<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-10582","post","type-post","status-publish","format-standard","hentry","category-new"],"_links":{"self":[{"href":"http:\/\/www.jointchina.com\/index.php\/wp-json\/wp\/v2\/posts\/10582","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.jointchina.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.jointchina.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.jointchina.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.jointchina.com\/index.php\/wp-json\/wp\/v2\/comments?post=10582"}],"version-history":[{"count":0,"href":"http:\/\/www.jointchina.com\/index.php\/wp-json\/wp\/v2\/posts\/10582\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.jointchina.com\/index.php\/wp-json\/wp\/v2\/media?parent=10582"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.jointchina.com\/index.php\/wp-json\/wp\/v2\/categories?post=10582"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.jointchina.com\/index.php\/wp-json\/wp\/v2\/tags?post=10582"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}