{"id":88852,"date":"2024-10-18T09:58:17","date_gmt":"2024-10-18T01:58:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/88852\/"},"modified":"2024-10-18T09:58:18","modified_gmt":"2024-10-18T01:58:18","slug":"ora-25008-%e5%9c%a8-instead-of-%e8%a7%b8%e7%99%bc%e5%99%a8%e4%b8%ad%e4%b8%8d%e5%85%81%e8%a8%b1%e5%b0%8d-lob-%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e9%80%b2%e8%a1%8c%e9%9a%b1%e5%bc%8f%e8%bd%89%e6%8f%9b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/88852\/","title":{"rendered":"ORA-25008: \u5728 INSTEAD OF \u89f8\u767c\u5668\u4e2d\u4e0d\u5141\u8a31\u5c0d LOB \u6578\u64da\u985e\u578b\u9032\u884c\u96b1\u5f0f\u8f49\u63db ORACLE \u5831\u932f \u6545\u969c\u4fee\u5fa9 \u9060\u7a0b\u8655\u7406"},"content":{"rendered":"<h1 id=\"ora-25008-%e5%9c%a8-instead-of-%e8%a7%b8%e7%99%bc%e5%99%a8%e4%b8%ad%e4%b8%8d%e5%85%81%e8%a8%b1%e5%b0%8d-lob-%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e9%80%b2%e8%a1%8c%e9%9a%b1%e5%bc%8f%e8%bd%89%e6%8f%9b-cVDdonigcg\">ORA-25008: \u5728 INSTEAD OF \u89f8\u767c\u5668\u4e2d\u4e0d\u5141\u8a31\u5c0d LOB \u6578\u64da\u985e\u578b\u9032\u884c\u96b1\u5f0f\u8f49\u63db ORACLE \u5831\u932f \u6545\u969c\u4fee\u5fa9 \u9060\u7a0b\u8655\u7406<\/h1>\n<p>\u5728\u4f7f\u7528 Oracle \u6578\u64da\u5eab\u6642\uff0c\u958b\u767c\u8005\u53ef\u80fd\u6703\u9047\u5230\u5404\u7a2e\u932f\u8aa4\u4ee3\u78bc\uff0c\u5176\u4e2d\u4e4b\u4e00\u4fbf\u662f <code>ORA-25008<\/code>\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u51fa\u73fe\u5728\u4f7f\u7528 INSTEAD OF \u89f8\u767c\u5668\u6642\uff0c\u4e26\u4e14\u6d89\u53ca\u5230 LOB\uff08Large Object\uff09\u6578\u64da\u985e\u578b\u7684\u96b1\u5f0f\u8f49\u63db\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=\"%e4%bb%80%e9%ba%bc%e6%98%af-ora-25008-%e9%8c%af%e8%aa%a4%ef%bc%9f-cVDdonigcg\">\u4ec0\u9ebc\u662f ORA-25008 \u932f\u8aa4\uff1f<\/h2>\n<p><code>ORA-25008<\/code> \u932f\u8aa4\u7684\u5177\u9ad4\u4fe1\u606f\u70ba\u300c\u5728 INSTEAD OF \u89f8\u767c\u5668\u4e2d\u4e0d\u5141\u8a31\u5c0d LOB \u6578\u64da\u985e\u578b\u9032\u884c\u96b1\u5f0f\u8f49\u63db\u300d\u3002\u9019\u610f\u5473\u8457\u7576\u4f60\u5617\u8a66\u5728 INSTEAD OF \u89f8\u767c\u5668\u4e2d\u5c0d LOB \u6578\u64da\u985e\u578b\u9032\u884c\u96b1\u5f0f\u8f49\u63db\u6642\uff0cOracle \u6578\u64da\u5eab\u6703\u62d2\u7d55\u9019\u4e00\u64cd\u4f5c\uff0c\u4e26\u8fd4\u56de\u932f\u8aa4\u3002<\/p>\n<h2 id=\"lob-%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e7%9a%84%e7%89%b9%e6%80%a7-cVDdonigcg\">LOB \u6578\u64da\u985e\u578b\u7684\u7279\u6027<\/h2>\n<p>LOB \u6578\u64da\u985e\u578b\u4e3b\u8981\u7528\u65bc\u5b58\u5132\u5927\u91cf\u6578\u64da\uff0c\u5982\u6587\u672c\u3001\u5716\u50cf\u6216\u8996\u983b\u3002Oracle \u63d0\u4f9b\u4e86\u5e7e\u7a2e LOB \u985e\u578b\uff0c\u5305\u62ec:<\/p>\n<ul>\n<li><strong>BLOB<\/strong>\uff08Binary Large Object\uff09: \u7528\u65bc\u5b58\u5132\u4e8c\u9032\u5236\u6578\u64da\u3002<\/li>\n<li><strong>CLOB<\/strong>\uff08Character Large Object\uff09: \u7528\u65bc\u5b58\u5132\u5b57\u7b26\u6578\u64da\u3002<\/li>\n<li><strong>NCLOB<\/strong>: \u7528\u65bc\u5b58\u5132\u570b\u969b\u5b57\u7b26\u6578\u64da\u3002<\/li>\n<\/ul>\n<p>\u7531\u65bc LOB \u6578\u64da\u7684\u7279\u6027\uff0cOracle \u5728\u8655\u7406\u9019\u4e9b\u6578\u64da\u6642\u9700\u8981\u7279\u5225\u6ce8\u610f\uff0c\u5c24\u5176\u662f\u5728\u89f8\u767c\u5668\u4e2d\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e6%9c%83%e5%87%ba%e7%8f%be-ora-25008-%e9%8c%af%e8%aa%a4%ef%bc%9f-cVDdonigcg\">\u70ba\u4ec0\u9ebc\u6703\u51fa\u73fe ORA-25008 \u932f\u8aa4\uff1f<\/h2>\n<p>\u7576\u4f60\u5728 INSTEAD OF \u89f8\u767c\u5668\u4e2d\u5617\u8a66\u5c07 LOB \u6578\u64da\u985e\u578b\u96b1\u5f0f\u8f49\u63db\u70ba\u5176\u4ed6\u6578\u64da\u985e\u578b\u6642\uff0cOracle \u6703\u6aa2\u6e2c\u5230\u9019\u4e00\u4e0d\u5408\u898f\u7684\u64cd\u4f5c\uff0c\u4e26\u8fd4\u56de <code>ORA-25008<\/code> \u932f\u8aa4\u3002\u9019\u901a\u5e38\u767c\u751f\u5728\u4ee5\u4e0b\u60c5\u6cc1\uff1a<\/p>\n<ul>\n<li>\u5728\u89f8\u767c\u5668\u4e2d\u4f7f\u7528\u4e86\u4e0d\u6b63\u78ba\u7684\u6578\u64da\u985e\u578b\u8f49\u63db\u3002<\/li>\n<li>\u5617\u8a66\u5c07 LOB \u6578\u64da\u985e\u578b\u8ce6\u503c\u7d66\u975e LOB \u6578\u64da\u985e\u578b\u7684\u8b8a\u91cf\u3002<\/li>\n<li>\u5728 INSERT \u6216 UPDATE \u64cd\u4f5c\u4e2d\uff0c\u672a\u6b63\u78ba\u8655\u7406 LOB \u6578\u64da\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9-ora-25008-%e9%8c%af%e8%aa%a4%ef%bc%9f-cVDdonigcg\">\u5982\u4f55\u4fee\u5fa9 ORA-25008 \u932f\u8aa4\uff1f<\/h2>\n<p>\u4fee\u5fa9 <code>ORA-25008<\/code> \u932f\u8aa4\u7684\u95dc\u9375\u5728\u65bc\u6b63\u78ba\u8655\u7406 LOB \u6578\u64da\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5efa\u8b70\u7684\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e6%aa%a2%e6%9f%a5%e8%a7%b8%e7%99%bc%e5%99%a8%e4%bb%a3%e7%a2%bc-cVDdonigcg\">1. \u6aa2\u67e5\u89f8\u767c\u5668\u4ee3\u78bc<\/h3>\n<pre><code>CREATE OR REPLACE TRIGGER my_trigger\nINSTEAD OF INSERT ON my_table\nFOR EACH ROW\nBEGIN\n    :NEW.my_lob_column := :NEW.my_lob_column; -- \u9019\u88e1\u53ef\u80fd\u6703\u5f15\u767c\u932f\u8aa4\nEND;\n<\/code><\/pre>\n<p>\u78ba\u4fdd\u5728\u89f8\u767c\u5668\u4e2d\u6b63\u78ba\u4f7f\u7528 LOB \u6578\u64da\u985e\u578b\uff0c\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u96b1\u5f0f\u8f49\u63db\u3002<\/p>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8-dbms_lob-%e5%8c%85-cVDdonigcg\">2. \u4f7f\u7528 DBMS_LOB \u5305<\/h3>\n<p>\u5728\u8655\u7406 LOB \u6578\u64da\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528 Oracle \u63d0\u4f9b\u7684 <code>DBMS_LOB<\/code> \u5305\u4f86\u9032\u884c\u64cd\u4f5c\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>DBMS_LOB.WRITE(:NEW.my_lob_column, LENGTH(:NEW.my_lob_column), 1, :NEW.my_lob_data);\n<\/code><\/pre>\n<h3 id=\"3-%e6%b8%ac%e8%a9%a6%e5%92%8c%e9%a9%97%e8%ad%89-cVDdonigcg\">3. \u6e2c\u8a66\u548c\u9a57\u8b49<\/h3>\n<p>\u5728\u4fee\u6539\u89f8\u767c\u5668\u5f8c\uff0c\u9032\u884c\u5145\u5206\u7684\u6e2c\u8a66\u4ee5\u78ba\u4fdd\u4e0d\u518d\u51fa\u73fe <code>ORA-25008<\/code> \u932f\u8aa4\u3002\u53ef\u4ee5\u4f7f\u7528 SQL Developer \u6216\u5176\u4ed6\u5de5\u5177\u4f86\u9a57\u8b49\u89f8\u767c\u5668\u7684\u884c\u70ba\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-cVDdonigcg\">\u7d50\u8ad6<\/h2>\n<p>\u5728 Oracle \u6578\u64da\u5eab\u4e2d\uff0c<code>ORA-25008<\/code> \u932f\u8aa4\u662f\u7531\u65bc\u5728 INSTEAD OF \u89f8\u767c\u5668\u4e2d\u5c0d LOB \u6578\u64da\u985e\u578b\u9032\u884c\u96b1\u5f0f\u8f49\u63db\u6240\u5f15\u8d77\u7684\u3002\u901a\u904e\u4ed4\u7d30\u6aa2\u67e5\u89f8\u767c\u5668\u4ee3\u78bc\u3001\u4f7f\u7528 <code>DBMS_LOB<\/code> \u5305\u4ee5\u53ca\u9032\u884c\u5145\u5206\u7684\u6e2c\u8a66\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u4fee\u5fa9\u9019\u4e00\u932f\u8aa4\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u61c9\u7528\uff0c\u6b63\u78ba\u8655\u7406 LOB \u6578\u64da\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\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-25008 \u932f\u8aa4\uff0c\u4e86\u89e3\u5728 INSTEAD OF \u89f8\u767c\u5668\u4e2d\u5c0d LOB \u6578\u64da\u985e\u578b\u7684\u96b1\u5f0f\u8f49\u63db\u9650\u5236\uff0c\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-88852","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/88852","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=88852"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/88852\/revisions"}],"predecessor-version":[{"id":88853,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/88852\/revisions\/88853"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=88852"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=88852"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=88852"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}