{"id":195771,"date":"2024-11-13T17:46:22","date_gmt":"2024-11-13T09:46:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/195771\/"},"modified":"2024-11-13T17:46:23","modified_gmt":"2024-11-13T09:46:23","slug":"%e5%9c%a8oracle%e4%b8%ad%e6%81%a2%e5%be%a9%e8%a2%abdrop%e6%8e%89%e7%9a%84%e8%a1%a8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/195771\/","title":{"rendered":"\u5728Oracle\u4e2d\u6062\u5fa9\u88abDROP\u6389\u7684\u8868"},"content":{"rendered":"

\u5728Oracle\u4e2d\u6062\u5fa9\u88abDROP\u6389\u7684\u8868<\/h1>\n

\u5728\u4f7f\u7528Oracle\u6578\u64da\u5eab\u7684\u904e\u7a0b\u4e2d\uff0c\u610f\u5916\u5730\u522a\u9664\u8868\u662f\u4e00\u500b\u5e38\u898b\u7684\u554f\u984c\u3002\u7121\u8ad6\u662f\u56e0\u70ba\u64cd\u4f5c\u5931\u8aa4\u9084\u662f\u5176\u4ed6\u539f\u56e0\uff0c\u7576\u4e00\u500b\u8868\u88abDROP\u6389\u5f8c\uff0c\u6578\u64da\u7684\u640d\u5931\u53ef\u80fd\u6703\u5c0d\u696d\u52d9\u9020\u6210\u56b4\u91cd\u5f71\u97ff\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5728Oracle\u4e2d\u6062\u5fa9\u88abDROP\u6389\u7684\u8868\u7684\u5e7e\u7a2e\u65b9\u6cd5\u3002<\/p>\n

1. \u4f7f\u7528FLASHBACK\u6280\u8853<\/h2>\n

Oracle\u63d0\u4f9b\u4e86\u4e00\u500b\u5f37\u5927\u7684\u529f\u80fd\uff0c\u7a31\u70baFLASHBACK\uff0c\u5141\u8a31\u7528\u6236\u6062\u5fa9\u5230\u67d0\u500b\u6642\u9593\u9ede\u7684\u6578\u64da\u72c0\u614b\u3002\u9019\u662f\u6062\u5fa9\u88abDROP\u6389\u7684\u8868\u7684\u6700\u6709\u6548\u65b9\u6cd5\u4e4b\u4e00\u3002<\/p>\n

1.1 \u555f\u7528FLASHBACK\u529f\u80fd<\/h3>\n

\u5728\u4f7f\u7528FLASHBACK\u4e4b\u524d\uff0c\u5fc5\u9808\u78ba\u4fdd\u6578\u64da\u5eab\u7684\u6062\u5fa9\u6a21\u5f0f\u8a2d\u7f6e\u70baARCHIVELOG\u6a21\u5f0f\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u547d\u4ee4\u6aa2\u67e5\u7576\u524d\u7684\u6062\u5fa9\u6a21\u5f0f\uff1a<\/p>\n

SELECT log_mode FROM v$database;<\/code><\/pre>\n
\u5982\u679c\u8fd4\u56de\u7684\u7d50\u679c\u662fNOARCHIVELOG\uff0c\u5247\u9700\u8981\u5c07\u6578\u64da\u5eab\u5207\u63db\u5230ARCHIVELOG\u6a21\u5f0f\u3002\u9019\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0b\u6b65\u9a5f\u5b8c\u6210\uff1a<\/p>\n
SHUTDOWN IMMEDIATE;\nSTARTUP MOUNT;\nALTER DATABASE ARCHIVELOG;\nALTER DATABASE OPEN;<\/code><\/pre>\n
1.2 \u4f7f\u7528FLASHBACK\u6062\u5fa9\u8868<\/h3>\n
\u4e00\u65e6FLASHBACK\u529f\u80fd\u555f\u7528\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u6062\u5fa9\u88abDROP\u6389\u7684\u8868\uff1a<\/p>\n
FLASHBACK TABLE table_name TO BEFORE DROP;<\/code><\/pre>\n
\u9019\u88e1\u7684<\/p>\n\u662f\u60a8\u60f3\u8981\u6062\u5fa9\u7684\u8868\u7684\u540d\u7a31\u3002\u57f7\u884c\u6b64\u547d\u4ee4\u5f8c\uff0cOracle\u5c07\u81ea\u52d5\u6062\u5fa9\u8a72\u8868\u53ca\u5176\u6578\u64da\u3002<\/p>\n
2. \u4f7f\u7528\u6578\u64da\u6cf5\u5c0e\u51fa\u548c\u5c0e\u5165<\/h2>\n
\u5982\u679c\u60a8\u5728\u522a\u9664\u8868\u4e4b\u524d\u6709\u9032\u884c\u6578\u64da\u6cf5\u5c0e\u51fa\uff0c\u90a3\u9ebc\u53ef\u4ee5\u901a\u904e\u5c0e\u5165\u4f86\u6062\u5fa9\u8868\u3002\u6578\u64da\u6cf5\u662f\u4e00\u7a2e\u9ad8\u6548\u7684\u6578\u64da\u5c0e\u51fa\u548c\u5c0e\u5165\u5de5\u5177\u3002<\/p>\n
2.1 \u5c0e\u51fa\u6578\u64da<\/h3>\n
\u5728\u522a\u9664\u8868\u4e4b\u524d\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u5c0e\u51fa\u8868\uff1a<\/p>\n
expdp username\/password DIRECTORY=dir_name DUMPFILE=table_name.dmp TABLES=table_name;<\/code><\/pre>\n
2.2 \u5c0e\u5165\u6578\u64da<\/h3>\n
\u5982\u679c\u8868\u5df2\u7d93\u88ab\u522a\u9664\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u5c0e\u5165\u6578\u64da\uff1a<\/p>\n
impdp username\/password DIRECTORY=dir_name DUMPFILE=table_name.dmp TABLES=table_name;<\/code><\/pre>\n
3. \u4f7f\u7528\u56de\u6efe\u6bb5<\/h2>\n
\u5982\u679c\u60a8\u7684\u6578\u64da\u5eab\u555f\u7528\u4e86\u56de\u6efe\u6bb5\uff0c\u5247\u53ef\u4ee5\u901a\u904e\u56de\u6efe\u6bb5\u4f86\u6062\u5fa9\u88abDROP\u6389\u7684\u8868\u3002\u9019\u7a2e\u65b9\u6cd5\u7684\u6709\u6548\u6027\u53d6\u6c7a\u65bc\u56de\u6efe\u6bb5\u7684\u5927\u5c0f\u548c\u914d\u7f6e\u3002<\/p>\n
3.1 \u67e5\u627e\u56de\u6efe\u6bb5<\/h3>\n
\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\u4f86\u6aa2\u67e5\u56de\u6efe\u6bb5\u7684\u72c0\u614b\uff1a<\/p>\n
SELECT * FROM dba_rollback_segs;<\/code><\/pre>\n
3.2 \u6062\u5fa9\u8868<\/h3>\n
\u5982\u679c\u627e\u5230\u5408\u9069\u7684\u56de\u6efe\u6bb5\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u6062\u5fa9\u8868\uff1a<\/p>\n
ROLLBACK TO SAVEPOINT savepoint_name;<\/code><\/pre>\n
4. \u4f7f\u7528\u5099\u4efd\u6062\u5fa9<\/h2>\n
\u5982\u679c\u4ee5\u4e0a\u65b9\u6cd5\u90fd\u7121\u6cd5\u6062\u5fa9\u8868\uff0c\u5247\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u6578\u64da\u5eab\u7684\u5099\u4efd\u4f86\u6062\u5fa9\u3002\u9019\u9700\u8981\u60a8\u5728\u522a\u9664\u8868\u4e4b\u524d\u6709\u9032\u884c\u904e\u5b8c\u6574\u7684\u6578\u64da\u5eab\u5099\u4efd\u3002<\/p>\n
4.1 \u6062\u5fa9\u5099\u4efd<\/h3>\n
\u4f7f\u7528RMAN\uff08Recovery Manager\uff09\u4f86\u6062\u5fa9\u5099\u4efd\u7684\u57fa\u672c\u547d\u4ee4\u5982\u4e0b\uff1a<\/p>\n
RMAN> RESTORE TABLE table_name;<\/code><\/pre>\n
\u9019\u5c07\u5f9e\u5099\u4efd\u4e2d\u6062\u5fa9\u6307\u5b9a\u7684\u8868\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u5728Oracle\u4e2d\u6062\u5fa9\u88abDROP\u6389\u7684\u8868\u4e26\u4e0d\u662f\u4e00\u4ef6\u7c21\u55ae\u7684\u4e8b\u60c5\uff0c\u4f46\u901a\u904e\u4f7f\u7528FLASHBACK\u6280\u8853\u3001\u6578\u64da\u6cf5\u5c0e\u51fa\u548c\u5c0e\u5165\u3001\u56de\u6efe\u6bb5\u4ee5\u53ca\u5099\u4efd\u6062\u5fa9\u7b49\u65b9\u6cd5\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u6e1b\u5c11\u6578\u64da\u640d\u5931\u7684\u98a8\u96aa\u3002\u70ba\u4e86\u907f\u514d\u672a\u4f86\u7684\u6578\u64da\u4e1f\u5931\uff0c\u5efa\u8b70\u5b9a\u671f\u9032\u884c\u6578\u64da\u5099\u4efd\uff0c\u4e26\u8003\u616e\u4f7f\u7528\u9999\u6e2fVPS<\/a>\u4f86\u904b\u884c\u60a8\u7684Oracle\u6578\u64da\u5eab\uff0c\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u5b89\u5168\u6027\u548c\u53ef\u9760\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5b78\u7fd2\u5982\u4f55\u5728Oracle\u4e2d\u6062\u5fa9\u88abDROP\u6389\u7684\u8868\uff0c\u638c\u63e1\u6709\u6548\u7684\u6578\u64da\u6062\u5fa9\u6280\u5de7\uff0c\u4fdd\u8b77\u60a8\u7684\u6578\u64da\u5b89\u5168\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-195771","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/195771","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=195771"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/195771\/revisions"}],"predecessor-version":[{"id":195772,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/195771\/revisions\/195772"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=195771"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=195771"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=195771"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}