{"id":92122,"date":"2024-10-19T02:58:16","date_gmt":"2024-10-18T18:58:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/92122\/"},"modified":"2024-10-19T02:58:16","modified_gmt":"2024-10-18T18:58:16","slug":"ora-38791-flashback-%e6%9c%aa%e5%95%9f%e5%8b%95%ef%bc%8c%e5%9b%a0%e7%82%ba%e6%96%87%e4%bb%b6-string-%e4%b8%8d%e5%9c%a8%e6%9c%89%e6%95%88%e7%9a%84%e5%af%a6%e4%be%8b%e4%b8%ad-oracle-%e5%a0%b1%e9%8c%af","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/92122\/","title":{"rendered":"ORA-38791: Flashback \u672a\u555f\u52d5\uff0c\u56e0\u70ba\u6587\u4ef6 string \u4e0d\u5728\u6709\u6548\u7684\u5be6\u4f8b\u4e2d ORACLE \u5831\u932f \u6545\u969c\u4fee\u5fa9 \u9060\u7a0b\u8655\u7406"},"content":{"rendered":"<h1 id=\"ora-38791-flashback-%e6%9c%aa%e5%95%9f%e5%8b%95%ef%bc%8c%e5%9b%a0%e7%82%ba%e6%96%87%e4%bb%b6-string-%e4%b8%8d%e5%9c%a8%e6%9c%89%e6%95%88%e7%9a%84%e5%af%a6%e4%be%8b%e4%b8%ad-oracle-%e5%a0%b1%e9%8c%af-nMHtzoWxzJ\">ORA-38791: Flashback \u672a\u555f\u52d5\uff0c\u56e0\u70ba\u6587\u4ef6 string \u4e0d\u5728\u6709\u6548\u7684\u5be6\u4f8b\u4e2d ORACLE \u5831\u932f \u6545\u969c\u4fee\u5fa9 \u9060\u7a0b\u8655\u7406<\/h1>\n<p>\u5728\u4f7f\u7528 Oracle \u6578\u64da\u5eab\u7684\u904e\u7a0b\u4e2d\uff0c\u958b\u767c\u8005\u548c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u53ef\u80fd\u6703\u9047\u5230\u5404\u7a2e\u932f\u8aa4\u4ee3\u78bc\uff0c\u5176\u4e2d\u4e4b\u4e00\u4fbf\u662f <code>ORA-38791<\/code>\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u8207 Flashback \u529f\u80fd\u6709\u95dc\uff0c\u4e26\u4e14\u6703\u5728\u5617\u8a66\u555f\u7528 Flashback \u6642\u51fa\u73fe\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u9019\u500b\u932f\u8aa4\u7684\u539f\u56e0\u3001\u5f71\u97ff\u4ee5\u53ca\u5982\u4f55\u9032\u884c\u6545\u969c\u4fee\u5fa9\u3002<\/p>\n<h2 id=\"%e9%8c%af%e8%aa%a4%e5%8e%9f%e5%9b%a0-nMHtzoWxzJ\">\u932f\u8aa4\u539f\u56e0<\/h2>\n<p>\u7576\u51fa\u73fe <code>ORA-38791<\/code> \u932f\u8aa4\u6642\uff0c\u901a\u5e38\u8868\u793a Flashback \u529f\u80fd\u672a\u555f\u52d5\uff0c\u539f\u56e0\u662f\u67d0\u500b\u6587\u4ef6\u4e0d\u5728\u6709\u6548\u7684\u5be6\u4f8b\u4e2d\u3002\u9019\u53ef\u80fd\u662f\u7531\u65bc\u4ee5\u4e0b\u5e7e\u500b\u539f\u56e0\u9020\u6210\u7684\uff1a<\/p>\n<ul>\n<li><strong>\u6587\u4ef6\u4e1f\u5931\uff1a<\/strong>\u5982\u679c Flashback \u65e5\u8a8c\u6587\u4ef6\u88ab\u522a\u9664\u6216\u79fb\u52d5\uff0cOracle \u5c07\u7121\u6cd5\u627e\u5230\u6240\u9700\u7684\u6587\u4ef6\u3002<\/li>\n<li><strong>\u5be6\u4f8b\u4e0d\u4e00\u81f4\uff1a<\/strong>\u5728\u591a\u5be6\u4f8b\u74b0\u5883\u4e2d\uff0c\u5982\u679c\u67d0\u500b\u5be6\u4f8b\u7121\u6cd5\u8a2a\u554f Flashback \u65e5\u8a8c\uff0c\u5247\u6703\u5c0e\u81f4\u6b64\u932f\u8aa4\u3002<\/li>\n<li><strong>\u914d\u7f6e\u554f\u984c\uff1a<\/strong>\u5982\u679c Oracle \u6578\u64da\u5eab\u7684\u914d\u7f6e\u4e0d\u6b63\u78ba\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4 Flashback \u529f\u80fd\u7121\u6cd5\u6b63\u5e38\u904b\u884c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%bd%b1%e9%9f%bf-nMHtzoWxzJ\">\u5f71\u97ff<\/h2>\n<p>\u7576 <code>ORA-38791<\/code> \u932f\u8aa4\u767c\u751f\u6642\uff0c\u5c07\u7121\u6cd5\u4f7f\u7528 Flashback \u529f\u80fd\u4f86\u6062\u5fa9\u6578\u64da\u3002\u9019\u5c0d\u65bc\u9700\u8981\u6578\u64da\u6062\u5fa9\u7684\u696d\u52d9\u4f86\u8aaa\uff0c\u53ef\u80fd\u6703\u9020\u6210\u56b4\u91cd\u5f71\u97ff\uff0c\u7279\u5225\u662f\u5728\u6578\u64da\u4e1f\u5931\u6216\u640d\u58de\u7684\u60c5\u6cc1\u4e0b\u3002<\/p>\n<h2 id=\"%e6%95%85%e9%9a%9c%e4%bf%ae%e5%be%a9%e6%ad%a5%e9%a9%9f-nMHtzoWxzJ\">\u6545\u969c\u4fee\u5fa9\u6b65\u9a5f<\/h2>\n<p>\u8981\u4fee\u5fa9 <code>ORA-38791<\/code> \u932f\u8aa4\uff0c\u53ef\u4ee5\u6309\u7167\u4ee5\u4e0b\u6b65\u9a5f\u9032\u884c\uff1a<\/p>\n<h3 id=\"1-%e6%aa%a2%e6%9f%a5-flashback-%e6%97%a5%e8%aa%8c%e6%96%87%e4%bb%b6-nMHtzoWxzJ\">1. \u6aa2\u67e5 Flashback \u65e5\u8a8c\u6587\u4ef6<\/h3>\n<p>\u9996\u5148\uff0c\u6aa2\u67e5 Flashback \u65e5\u8a8c\u6587\u4ef6\u662f\u5426\u5b58\u5728\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u67e5\u8a62\u4f86\u6aa2\u67e5\uff1a<\/p>\n<pre><code>SELECT * FROM V$FLASHBACK_LOG;<\/code><\/pre>\n<p>\u5982\u679c\u67e5\u8a62\u7d50\u679c\u986f\u793a\u6c92\u6709 Flashback \u65e5\u8a8c\uff0c\u5247\u9700\u8981\u91cd\u65b0\u5275\u5efa\u9019\u4e9b\u65e5\u8a8c\u3002<\/p>\n<h3 id=\"2-%e6%aa%a2%e6%9f%a5%e5%af%a6%e4%be%8b%e7%8b%80%e6%85%8b-nMHtzoWxzJ\">2. \u6aa2\u67e5\u5be6\u4f8b\u72c0\u614b<\/h3>\n<p>\u78ba\u4fdd\u6240\u6709\u5be6\u4f8b\u90fd\u5728\u904b\u884c\u4e26\u4e14\u53ef\u4ee5\u8a2a\u554f Flashback \u65e5\u8a8c\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u6aa2\u67e5\u5be6\u4f8b\u72c0\u614b\uff1a<\/p>\n<pre><code>SELECT INSTANCE_NAME, STATUS FROM V$INSTANCE;<\/code><\/pre>\n<p>\u5982\u679c\u6709\u4efb\u4f55\u5be6\u4f8b\u986f\u793a\u70ba DOWN\uff0c\u5247\u9700\u8981\u555f\u52d5\u8a72\u5be6\u4f8b\u3002<\/p>\n<h3 id=\"3-%e6%aa%a2%e6%9f%a5%e9%85%8d%e7%bd%ae-nMHtzoWxzJ\">3. \u6aa2\u67e5\u914d\u7f6e<\/h3>\n<p>\u6aa2\u67e5 Oracle \u6578\u64da\u5eab\u7684\u914d\u7f6e\uff0c\u78ba\u4fdd Flashback \u529f\u80fd\u5df2\u6b63\u78ba\u555f\u7528\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u6aa2\u67e5 Flashback \u914d\u7f6e\uff1a<\/p>\n<pre><code>SHOW PARAMETER FLASHBACK;<\/code><\/pre>\n<p>\u5982\u679c Flashback \u529f\u80fd\u672a\u555f\u7528\uff0c\u5247\u9700\u8981\u9032\u884c\u76f8\u61c9\u7684\u914d\u7f6e\u66f4\u6539\u3002<\/p>\n<h3 id=\"4-%e9%87%8d%e6%96%b0%e5%95%9f%e5%8b%95%e6%95%b8%e6%93%9a%e5%ba%ab-nMHtzoWxzJ\">4. \u91cd\u65b0\u555f\u52d5\u6578\u64da\u5eab<\/h3>\n<p>\u5728\u5b8c\u6210\u4e0a\u8ff0\u6aa2\u67e5\u548c\u4fee\u5fa9\u5f8c\uff0c\u5efa\u8b70\u91cd\u65b0\u555f\u52d5\u6578\u64da\u5eab\uff0c\u4ee5\u78ba\u4fdd\u6240\u6709\u66f4\u6539\u751f\u6548\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-nMHtzoWxzJ\">\u7d50\u8ad6<\/h2>\n<p>\u9047\u5230 <code>ORA-38791<\/code> \u932f\u8aa4\u6642\uff0c\u53ca\u6642\u6aa2\u67e5 Flashback \u65e5\u8a8c\u6587\u4ef6\u3001\u5be6\u4f8b\u72c0\u614b\u548c\u914d\u7f6e\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u901a\u904e\u9075\u5faa\u4e0a\u8ff0\u6b65\u9a5f\uff0c\u60a8\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u6b64\u554f\u984c\uff0c\u6062\u5fa9 Flashback \u529f\u80fd\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u5b89\u5168\u6027\u548c\u53ef\u7528\u6027\u3002<\/p>\n<p>\u5982\u9700\u9032\u4e00\u6b65\u4e86\u89e3\u5982\u4f55\u5728 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u74b0\u5883\u4e2d\u7ba1\u7406 Oracle \u6578\u64da\u5eab\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8cc7\u8a0a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u89e3\u6c7a ORA-38791 \u932f\u8aa4\uff0c\u56e0\u70ba Flashback \u672a\u555f\u52d5\uff0c\u6587\u4ef6\u4e0d\u5728\u6709\u6548\u5be6\u4f8b\u4e2d\u3002\u63d0\u4f9b\u6545\u969c\u4fee\u5fa9\u548c\u9060\u7a0b\u8655\u7406\u65b9\u6848\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-92122","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/92122","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=92122"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/92122\/revisions"}],"predecessor-version":[{"id":92123,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/92122\/revisions\/92123"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=92122"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=92122"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=92122"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}