{"id":92162,"date":"2024-10-19T03:18:16","date_gmt":"2024-10-18T19:18:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/92162\/"},"modified":"2024-10-19T03:18:17","modified_gmt":"2024-10-18T19:18:17","slug":"ora-38905-%e4%b8%8d%e6%94%af%e6%8c%81%e5%b0%8d-long-%e5%88%97-string-%e7%9a%84-dml-%e9%8c%af%e8%aa%a4%e6%97%a5%e8%aa%8c-oracle-%e5%a0%b1%e9%8c%af-%e6%95%85%e9%9a%9c%e4%bf%ae","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/92162\/","title":{"rendered":"ORA-38905: \u4e0d\u652f\u6301\u5c0d LONG \u5217 \u201cstring\u201d \u7684 DML \u932f\u8aa4\u65e5\u8a8c ORACLE \u5831\u932f \u6545\u969c\u4fee\u5fa9 \u9060\u7a0b\u8655\u7406"},"content":{"rendered":"<h1 id=\"ora-38905-%e4%b8%8d%e6%94%af%e6%8c%81%e5%b0%8d-long-%e5%88%97-string-%e7%9a%84-dml-%e9%8c%af%e8%aa%a4%e6%97%a5%e8%aa%8c-oracle-%e5%a0%b1%e9%8c%af-%e6%95%85%e9%9a%9c%e4%bf%ae-asurEcGgWX\">ORA-38905: \u4e0d\u652f\u6301\u5c0d LONG \u5217 \u201cstring\u201d \u7684 DML \u932f\u8aa4\u65e5\u8a8c 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\u548c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u53ef\u80fd\u6703\u9047\u5230\u5404\u7a2e\u932f\u8aa4\u4ee3\u78bc\uff0c\u5176\u4e2d\u4e4b\u4e00\u5c31\u662f <code>ORA-38905<\/code>\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u51fa\u73fe\u5728\u5c0d LONG \u5217\u9032\u884c DML\uff08\u6578\u64da\u64cd\u4f5c\u8a9e\u8a00\uff09\u64cd\u4f5c\u6642\uff0c\u8868\u793a\u8a72\u64cd\u4f5c\u4e0d\u88ab\u652f\u6301\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=\"%e4%bb%80%e9%ba%bc%e6%98%af-long-%e5%88%97%ef%bc%9f-asurEcGgWX\">\u4ec0\u9ebc\u662f LONG \u5217\uff1f<\/h2>\n<p>\u5728 Oracle \u6578\u64da\u5eab\u4e2d\uff0cLONG \u5217\u662f\u4e00\u7a2e\u7279\u6b8a\u7684\u6578\u64da\u985e\u578b\uff0c\u7528\u65bc\u5b58\u5132\u53ef\u8b8a\u9577\u5ea6\u7684\u5b57\u7b26\u6578\u64da\u3002LONG \u5217\u7684\u6700\u5927\u9577\u5ea6\u70ba 2GB\uff0c\u9019\u4f7f\u5f97\u5b83\u5728\u5b58\u5132\u5927\u91cf\u6587\u672c\u6578\u64da\u6642\u975e\u5e38\u6709\u7528\u3002\u7136\u800c\uff0cLONG \u5217\u7684\u4f7f\u7528\u4e5f\u6709\u5176\u9650\u5236\uff0c\u7279\u5225\u662f\u5728 DML \u64cd\u4f5c\u65b9\u9762\u3002<\/p>\n<h2 id=\"ora-38905-%e9%8c%af%e8%aa%a4%e7%9a%84%e5%8e%9f%e5%9b%a0-asurEcGgWX\">ORA-38905 \u932f\u8aa4\u7684\u539f\u56e0<\/h2>\n<p>\u7576\u4f60\u5617\u8a66\u5c0d LONG \u5217\u9032\u884c DML \u64cd\u4f5c\uff08\u5982 INSERT\u3001UPDATE \u6216 DELETE\uff09\u6642\uff0c\u53ef\u80fd\u6703\u9047\u5230 <code>ORA-38905<\/code> \u932f\u8aa4\u3002\u9019\u662f\u56e0\u70ba Oracle \u6578\u64da\u5eab\u4e0d\u652f\u6301\u5c0d LONG \u5217\u7684\u67d0\u4e9b\u64cd\u4f5c\u3002\u5177\u9ad4\u4f86\u8aaa\uff0c\u4ee5\u4e0b\u60c5\u6cc1\u53ef\u80fd\u5c0e\u81f4\u6b64\u932f\u8aa4\uff1a<\/p>\n<ul>\n<li>\u5617\u8a66\u4f7f\u7528\u4e0d\u652f\u6301\u7684 SQL \u8a9e\u53e5\u5c0d LONG \u5217\u9032\u884c\u64cd\u4f5c\u3002<\/li>\n<li>\u5728 PL\/SQL \u4e2d\u4f7f\u7528 LONG \u5217\u6642\uff0c\u672a\u6b63\u78ba\u8655\u7406\u6578\u64da\u985e\u578b\u3002<\/li>\n<li>\u4f7f\u7528\u4e86\u4e0d\u517c\u5bb9\u7684\u5de5\u5177\u6216\u9a45\u52d5\u7a0b\u5e8f\u4f86\u8a2a\u554f LONG \u5217\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9-ora-38905-%e9%8c%af%e8%aa%a4-asurEcGgWX\">\u5982\u4f55\u4fee\u5fa9 ORA-38905 \u932f\u8aa4<\/h2>\n<p>\u4fee\u5fa9 <code>ORA-38905<\/code> \u932f\u8aa4\u7684\u7b2c\u4e00\u6b65\u662f\u78ba\u5b9a\u5c0e\u81f4\u932f\u8aa4\u7684\u5177\u9ad4\u539f\u56e0\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u89e3\u6c7a\u65b9\u6848\uff1a<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8-clob-%e6%9b%bf%e4%bb%a3-long-%e5%88%97-asurEcGgWX\">1. \u4f7f\u7528 CLOB \u66ff\u4ee3 LONG \u5217<\/h3>\n<p>\u7531\u65bc LONG \u5217\u7684\u9650\u5236\uff0c\u5efa\u8b70\u5c07 LONG \u5217\u66ff\u63db\u70ba CLOB\uff08Character Large Object\uff09\u985e\u578b\u3002CLOB \u652f\u6301\u66f4\u5927\u7684\u6578\u64da\u91cf\uff0c\u4e26\u4e14\u5728 DML \u64cd\u4f5c\u4e2d\u66f4\u5177\u9748\u6d3b\u6027\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u8a9e\u53e5\u5c07 LONG \u5217\u8f49\u63db\u70ba CLOB\uff1a<\/p>\n<pre><code>ALTER TABLE your_table_name \nMODIFY your_long_column_name CLOB;<\/code><\/pre>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8-dbms_lob-%e5%8c%85%e9%80%b2%e8%a1%8c%e6%93%8d%e4%bd%9c-asurEcGgWX\">2. \u4f7f\u7528 DBMS_LOB \u5305\u9032\u884c\u64cd\u4f5c<\/h3>\n<p>\u5982\u679c\u5fc5\u9808\u4f7f\u7528 LONG \u5217\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528 Oracle \u63d0\u4f9b\u7684 <code>DBMS_LOB<\/code> \u5305\u4f86\u9032\u884c\u64cd\u4f5c\u3002\u9019\u500b\u5305\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u8655\u7406\u5927\u5c0d\u8c61\u6578\u64da\uff0c\u5305\u62ec LONG \u5217\u3002<\/p>\n<pre><code>DECLARE\n    v_long_data LONG;\nBEGIN\n    SELECT your_long_column_name INTO v_long_data FROM your_table_name WHERE your_condition;\n    -- \u9032\u884c\u5176\u4ed6\u64cd\u4f5c\nEND;<\/code><\/pre>\n<h3 id=\"3-%e6%aa%a2%e6%9f%a5-sql-%e8%aa%9e%e5%8f%a5%e7%9a%84%e5%85%bc%e5%ae%b9%e6%80%a7-asurEcGgWX\">3. \u6aa2\u67e5 SQL \u8a9e\u53e5\u7684\u517c\u5bb9\u6027<\/h3>\n<p>\u78ba\u4fdd\u4f7f\u7528\u7684 SQL \u8a9e\u53e5\u8207 LONG \u5217\u517c\u5bb9\u3002\u907f\u514d\u4f7f\u7528\u4e0d\u652f\u6301\u7684\u51fd\u6578\u6216\u64cd\u4f5c\uff0c\u4e26\u6aa2\u67e5 SQL \u8a9e\u53e5\u7684\u8a9e\u6cd5\u662f\u5426\u6b63\u78ba\u3002<\/p>\n<h2 id=\"%e9%81%a0%e7%a8%8b%e8%99%95%e7%90%86-ora-38905-%e9%8c%af%e8%aa%a4-asurEcGgWX\">\u9060\u7a0b\u8655\u7406 ORA-38905 \u932f\u8aa4<\/h2>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u53ef\u80fd\u9700\u8981\u9060\u7a0b\u8655\u7406 <code>ORA-38905<\/code> \u932f\u8aa4\u3002\u9019\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0b\u6b65\u9a5f\u5be6\u73fe\uff1a<\/p>\n<ul>\n<li>\u4f7f\u7528\u9060\u7a0b\u684c\u9762\u6216 SSH \u9023\u63a5\u5230\u6578\u64da\u5eab\u670d\u52d9\u5668\u3002<\/li>\n<li>\u6aa2\u67e5\u6578\u64da\u5eab\u65e5\u8a8c\u4ee5\u7372\u53d6\u66f4\u591a\u932f\u8aa4\u4fe1\u606f\u3002<\/li>\n<li>\u6839\u64da\u65e5\u8a8c\u4e2d\u7684\u63d0\u793a\u9032\u884c\u6545\u969c\u6392\u9664\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-asurEcGgWX\">\u7e3d\u7d50<\/h2>\n<p>\u5728 Oracle \u6578\u64da\u5eab\u4e2d\uff0c<code>ORA-38905<\/code> \u932f\u8aa4\u901a\u5e38\u8207 LONG \u5217\u7684 DML \u64cd\u4f5c\u6709\u95dc\u3002\u901a\u904e\u5c07 LONG \u5217\u66ff\u63db\u70ba CLOB\u3001\u4f7f\u7528 <code>DBMS_LOB<\/code> \u5305\u4ee5\u53ca\u6aa2\u67e5 SQL \u8a9e\u53e5\u7684\u517c\u5bb9\u6027\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u6b64\u554f\u984c\u3002\u5982\u679c\u60a8\u9700\u8981\u9032\u4e00\u6b65\u7684\u652f\u6301\u6216\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u670d\u52d9\u4f86\u7372\u5f97\u66f4\u7a69\u5b9a\u7684\u6578\u64da\u5eab\u74b0\u5883\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u89e3\u6c7a ORA-38905 \u932f\u8aa4\uff0c\u4e86\u89e3\u4e0d\u652f\u6301 LONG \u5217\u7684 DML \u554f\u984c\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-92162","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/92162","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=92162"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/92162\/revisions"}],"predecessor-version":[{"id":92163,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/92162\/revisions\/92163"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=92162"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=92162"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=92162"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}