{"id":92090,"date":"2024-10-19T02:42:16","date_gmt":"2024-10-18T18:42:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/92090\/"},"modified":"2024-10-19T02:42:16","modified_gmt":"2024-10-18T18:42:16","slug":"ora-38748-%e7%84%a1%e6%b3%95-flashback-%e6%95%b8%e6%93%9a%e6%96%87%e4%bb%b6-string-%e6%96%87%e4%bb%b6%e6%ad%a3%e5%9c%a8%e4%bd%bf%e7%94%a8%e6%88%96%e6%81%a2%e5%be%a9%e4%b8%ad-oracle","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/92090\/","title":{"rendered":"ORA-38748: \u7121\u6cd5 Flashback \u6578\u64da\u6587\u4ef6 string \u2013 \u6587\u4ef6\u6b63\u5728\u4f7f\u7528\u6216\u6062\u5fa9\u4e2d ORACLE \u5831\u932f \u6545\u969c\u4fee\u5fa9 \u9060\u7a0b\u8655\u7406"},"content":{"rendered":"<h1 id=\"ora-38748-%e7%84%a1%e6%b3%95-flashback-%e6%95%b8%e6%93%9a%e6%96%87%e4%bb%b6-%e6%96%87%e4%bb%b6%e6%ad%a3%e5%9c%a8%e4%bd%bf%e7%94%a8%e6%88%96%e6%81%a2%e5%be%a9%e4%b8%ad-luDrpNmGTw\">ORA-38748: \u7121\u6cd5 Flashback \u6578\u64da\u6587\u4ef6 \u2013 \u6587\u4ef6\u6b63\u5728\u4f7f\u7528\u6216\u6062\u5fa9\u4e2d<\/h1>\n<p>\u5728\u4f7f\u7528 Oracle \u6578\u64da\u5eab\u6642\uff0c\u9047\u5230\u932f\u8aa4\u4ee3\u78bc <code>ORA-38748<\/code> \u662f\u4e00\u500b\u5e38\u898b\u7684\u554f\u984c\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u8868\u793a\u6578\u64da\u6587\u4ef6\u7121\u6cd5\u9032\u884c Flashback \u64cd\u4f5c\uff0c\u56e0\u70ba\u8a72\u6587\u4ef6\u6b63\u5728\u88ab\u4f7f\u7528\u6216\u8655\u65bc\u6062\u5fa9\u72c0\u614b\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u9019\u500b\u932f\u8aa4\u7684\u539f\u56e0\u3001\u5f71\u97ff\u4ee5\u53ca\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 id=\"%e9%8c%af%e8%aa%a4%e5%8e%9f%e5%9b%a0%e5%88%86%e6%9e%90-luDrpNmGTw\">\u932f\u8aa4\u539f\u56e0\u5206\u6790<\/h2>\n<p>\u7576\u4f60\u5617\u8a66\u5c0d\u4e00\u500b\u6578\u64da\u6587\u4ef6\u9032\u884c Flashback \u64cd\u4f5c\u6642\uff0cOracle \u6578\u64da\u5eab\u6703\u6aa2\u67e5\u8a72\u6587\u4ef6\u7684\u72c0\u614b\u3002\u5982\u679c\u8a72\u6587\u4ef6\u6b63\u5728\u88ab\u5176\u4ed6\u9032\u7a0b\u4f7f\u7528\uff0c\u6216\u8005\u8655\u65bc\u6062\u5fa9\u904e\u7a0b\u4e2d\uff0c\u5247\u6703\u8fd4\u56de <code>ORA-38748<\/code> \u932f\u8aa4\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u53ef\u80fd\u5c0e\u81f4\u6b64\u932f\u8aa4\u7684\u5177\u9ad4\u60c5\u6cc1\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u6587\u4ef6\u6b63\u5728\u4f7f\u7528\uff1a<\/strong>\u5982\u679c\u6709\u5176\u4ed6\u6703\u8a71\u6b63\u5728\u8a2a\u554f\u8a72\u6578\u64da\u6587\u4ef6\uff0c\u5247\u7121\u6cd5\u9032\u884c Flashback \u64cd\u4f5c\u3002<\/li>\n<li><strong>\u6062\u5fa9\u904e\u7a0b\u4e2d\uff1a<\/strong>\u5982\u679c\u6578\u64da\u6587\u4ef6\u6b63\u5728\u9032\u884c\u6062\u5fa9\u64cd\u4f5c\uff0c\u4f8b\u5982\u5f9e\u5099\u4efd\u4e2d\u6062\u5fa9\uff0c\u5247\u6703\u5c0e\u81f4\u6b64\u932f\u8aa4\u3002<\/li>\n<li><strong>\u6578\u64da\u5eab\u8655\u65bc\u4e0d\u4e00\u81f4\u72c0\u614b\uff1a<\/strong>\u5982\u679c\u6578\u64da\u5eab\u7684\u72c0\u614b\u4e0d\u4e00\u81f4\uff0c\u53ef\u80fd\u6703\u5f71\u97ff Flashback \u64cd\u4f5c\u7684\u57f7\u884c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%bd%b1%e9%9f%bf%e7%af%84%e5%9c%8d-luDrpNmGTw\">\u5f71\u97ff\u7bc4\u570d<\/h2>\n<p>\u7576 <code>ORA-38748<\/code> \u932f\u8aa4\u767c\u751f\u6642\uff0c\u5c07\u6703\u5f71\u97ff\u6578\u64da\u5eab\u7684\u53ef\u7528\u6027\u548c\u6578\u64da\u6062\u5fa9\u80fd\u529b\u3002\u9019\u53ef\u80fd\u5c0e\u81f4\u4ee5\u4e0b\u554f\u984c\uff1a<\/p>\n<ul>\n<li>\u7121\u6cd5\u6062\u5fa9\u5230\u7279\u5b9a\u7684\u6642\u9593\u9ede\uff0c\u5f71\u97ff\u6578\u64da\u7684\u5b8c\u6574\u6027\u3002<\/li>\n<li>\u589e\u52a0\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u7684\u5de5\u4f5c\u8ca0\u64d4\uff0c\u9700\u9032\u884c\u984d\u5916\u7684\u6545\u969c\u6392\u9664\u3002<\/li>\n<li>\u53ef\u80fd\u5c0e\u81f4\u696d\u52d9\u4e2d\u65b7\uff0c\u5f71\u97ff\u7528\u6236\u9ad4\u9a57\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%95%85%e9%9a%9c%e4%bf%ae%e5%be%a9%e6%ad%a5%e9%a9%9f-luDrpNmGTw\">\u6545\u969c\u4fee\u5fa9\u6b65\u9a5f<\/h2>\n<p>\u70ba\u4e86\u89e3\u6c7a <code>ORA-38748<\/code> \u932f\u8aa4\uff0c\u53ef\u4ee5\u6309\u7167\u4ee5\u4e0b\u6b65\u9a5f\u9032\u884c\u6545\u969c\u6392\u9664\uff1a<\/p>\n<h3 id=\"1-%e6%aa%a2%e6%9f%a5%e6%95%b8%e6%93%9a%e6%96%87%e4%bb%b6%e7%8b%80%e6%85%8b-luDrpNmGTw\">1. \u6aa2\u67e5\u6578\u64da\u6587\u4ef6\u72c0\u614b<\/h3>\n<pre><code>SELECT file_name, status FROM dba_data_files WHERE file_id = &lt;file_id&gt;;<\/code><\/pre>\n<p>\u4f7f\u7528\u4e0a\u8ff0\u67e5\u8a62\u6aa2\u67e5\u6578\u64da\u6587\u4ef6\u7684\u72c0\u614b\uff0c\u78ba\u4fdd\u5b83\u4e0d\u662f\u5728\u4f7f\u7528\u4e2d\u6216\u8655\u65bc\u6062\u5fa9\u72c0\u614b\u3002<\/p>\n<h3 id=\"2-%e7%a2%ba%e8%aa%8d%e6%b2%92%e6%9c%89%e5%85%b6%e4%bb%96%e6%9c%83%e8%a9%b1%e5%9c%a8%e4%bd%bf%e7%94%a8%e8%a9%b2%e6%96%87%e4%bb%b6-luDrpNmGTw\">2. \u78ba\u8a8d\u6c92\u6709\u5176\u4ed6\u6703\u8a71\u5728\u4f7f\u7528\u8a72\u6587\u4ef6<\/h3>\n<pre><code>SELECT sid, serial#, status FROM v$session WHERE status = 'ACTIVE';<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u53ef\u4ee5\u5e6b\u52a9\u4f60\u627e\u5230\u7576\u524d\u6d3b\u8e8d\u7684\u6703\u8a71\uff0c\u78ba\u4fdd\u6c92\u6709\u5176\u4ed6\u6703\u8a71\u6b63\u5728\u8a2a\u554f\u8a72\u6578\u64da\u6587\u4ef6\u3002<\/p>\n<h3 id=\"3-%e6%aa%a2%e6%9f%a5%e6%81%a2%e5%be%a9%e9%80%b2%e7%a8%8b-luDrpNmGTw\">3. \u6aa2\u67e5\u6062\u5fa9\u9032\u7a0b<\/h3>\n<p>\u5982\u679c\u6578\u64da\u6587\u4ef6\u6b63\u5728\u6062\u5fa9\u4e2d\uff0c\u5247\u9700\u8981\u7b49\u5f85\u6062\u5fa9\u5b8c\u6210\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\u6aa2\u67e5\u6062\u5fa9\u72c0\u614b\uff1a<\/p>\n<pre><code>SELECT * FROM v$recover_file;<\/code><\/pre>\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-luDrpNmGTw\">4. \u91cd\u65b0\u555f\u52d5\u6578\u64da\u5eab<\/h3>\n<p>\u5982\u679c\u4ee5\u4e0a\u6b65\u9a5f\u7121\u6cd5\u89e3\u6c7a\u554f\u984c\uff0c\u8003\u616e\u91cd\u65b0\u555f\u52d5\u6578\u64da\u5eab\u3002\u9019\u5c07\u91cb\u653e\u6240\u6709\u8cc7\u6e90\u4e26\u53ef\u80fd\u89e3\u6c7a\u6587\u4ef6\u9396\u5b9a\u554f\u984c\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-luDrpNmGTw\">\u7d50\u8ad6<\/h2>\n<p>\u5728 Oracle \u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c<code>ORA-38748<\/code> \u932f\u8aa4\u662f\u4e00\u500b\u9700\u8981\u53ca\u6642\u8655\u7406\u7684\u554f\u984c\u3002\u901a\u904e\u6aa2\u67e5\u6578\u64da\u6587\u4ef6\u7684\u72c0\u614b\u3001\u78ba\u8a8d\u6d3b\u8e8d\u6703\u8a71\u4ee5\u53ca\u6aa2\u67e5\u6062\u5fa9\u9032\u7a0b\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u6b64\u932f\u8aa4\u3002\u4fdd\u6301\u6578\u64da\u5eab\u7684\u7a69\u5b9a\u6027\u548c\u53ef\u7528\u6027\u662f\u6bcf\u4f4d\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u7684\u91cd\u8981\u4efb\u52d9\u3002<\/p>\n<p>\u5982\u9700\u9032\u4e00\u6b65\u4e86\u89e3\u6709\u95dc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u548c\u6578\u64da\u5eab\u7ba1\u7406\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u89e3\u6c7a ORA-38748 \u932f\u8aa4\uff0c\u7121\u6cd5 Flashback \u6578\u64da\u6587\u4ef6\uff0c\u56e0\u6587\u4ef6\u6b63\u5728\u4f7f\u7528\u6216\u6062\u5fa9\u4e2d\uff0c\u63d0\u4f9b\u6545\u969c\u4fee\u5fa9\u53ca\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-92090","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/92090","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=92090"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/92090\/revisions"}],"predecessor-version":[{"id":92091,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/92090\/revisions\/92091"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=92090"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=92090"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=92090"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}