{"id":93158,"date":"2024-10-19T11:38:16","date_gmt":"2024-10-19T03:38:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/93158\/"},"modified":"2024-10-19T11:38:17","modified_gmt":"2024-10-19T03:38:17","slug":"ora-48488-%e8%ac%82%e8%a9%9e-string-%e8%b6%85%e9%81%8e%e6%9c%80%e5%a4%a7%e9%95%b7%e5%ba%a6-string-oracle-%e5%a0%b1%e9%8c%af-%e6%95%85%e9%9a%9c%e4%bf%ae%e5%be%a9-%e9%81%a0%e7%a8%8b%e8%99%95%e7%90%86","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/93158\/","title":{"rendered":"ORA-48488: \u8b02\u8a5e string \u8d85\u904e\u6700\u5927\u9577\u5ea6 [string] ORACLE \u5831\u932f \u6545\u969c\u4fee\u5fa9 \u9060\u7a0b\u8655\u7406"},"content":{"rendered":"<h1 id=\"ora-48488-%e8%ac%82%e8%a9%9e-string-%e8%b6%85%e9%81%8e%e6%9c%80%e5%a4%a7%e9%95%b7%e5%ba%a6-string-oracle-%e5%a0%b1%e9%8c%af-%e6%95%85%e9%9a%9c%e4%bf%ae%e5%be%a9-%e9%81%a0%e7%a8%8b%e8%99%95%e7%90%86-HiGjAegQJE\">ORA-48488: \u8b02\u8a5e string \u8d85\u904e\u6700\u5927\u9577\u5ea6 [string] 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 ORA-48488\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u8868\u793a\u5728\u8655\u7406\u67d0\u4e9b\u5b57\u7b26\u4e32\u6642\uff0c\u6240\u63d0\u4f9b\u7684\u5b57\u7b26\u4e32\u8d85\u904e\u4e86 Oracle \u6578\u64da\u5eab\u6240\u5141\u8a31\u7684\u6700\u5927\u9577\u5ea6\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e ORA-48488 \u932f\u8aa4\u7684\u539f\u56e0\u3001\u5f71\u97ff\u4ee5\u53ca\u5982\u4f55\u9032\u884c\u6545\u969c\u4fee\u5fa9\u3002<\/p>\n<h2 id=\"ora-48488-%e9%8c%af%e8%aa%a4%e7%9a%84%e5%8e%9f%e5%9b%a0-HiGjAegQJE\">ORA-48488 \u932f\u8aa4\u7684\u539f\u56e0<\/h2>\n<p>ORA-48488 \u932f\u8aa4\u901a\u5e38\u51fa\u73fe\u5728\u4ee5\u4e0b\u5e7e\u7a2e\u60c5\u6cc1\u4e0b\uff1a<\/p>\n<ul>\n<li><strong>\u5b57\u7b26\u4e32\u9577\u5ea6\u8d85\u904e\u9650\u5236\uff1a<\/strong>\u5728 Oracle \u6578\u64da\u5eab\u4e2d\uff0c\u67d0\u4e9b\u6578\u64da\u985e\u578b\uff08\u5982 VARCHAR2\u3001CHAR \u7b49\uff09\u5c0d\u5b57\u7b26\u4e32\u7684\u9577\u5ea6\u6709\u660e\u78ba\u7684\u9650\u5236\u3002\u5982\u679c\u5617\u8a66\u63d2\u5165\u6216\u66f4\u65b0\u7684\u5b57\u7b26\u4e32\u8d85\u904e\u4e86\u9019\u4e9b\u9650\u5236\uff0c\u5c31\u6703\u5f15\u767c ORA-48488 \u932f\u8aa4\u3002<\/li>\n<li><strong>\u4e0d\u6b63\u78ba\u7684\u6578\u64da\u8655\u7406\uff1a<\/strong>\u5728\u9032\u884c\u6578\u64da\u8655\u7406\u6642\uff0c\u82e5\u672a\u6b63\u78ba\u8655\u7406\u5b57\u7b26\u4e32\u7684\u9577\u5ea6\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u8d85\u51fa\u9650\u5236\u7684\u60c5\u6cc1\u3002\u4f8b\u5982\uff0c\u5728\u62fc\u63a5\u5b57\u7b26\u4e32\u6642\uff0c\u672a\u8003\u616e\u5230\u6700\u7d42\u7d50\u679c\u7684\u9577\u5ea6\u3002<\/li>\n<li><strong>\u4f7f\u7528\u4e0d\u7576\u7684\u51fd\u6578\uff1a<\/strong>\u67d0\u4e9b Oracle \u51fd\u6578\u5728\u8655\u7406\u5b57\u7b26\u4e32\u6642\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u9577\u5ea6\u8d85\u904e\u9650\u5236\u3002\u4f8b\u5982\uff0c\u4f7f\u7528 SUBSTR \u51fd\u6578\u6642\uff0c\u5982\u679c\u6307\u5b9a\u7684\u8d77\u59cb\u4f4d\u7f6e\u548c\u9577\u5ea6\u4e0d\u7576\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u932f\u8aa4\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9-ora-48488-%e9%8c%af%e8%aa%a4-HiGjAegQJE\">\u5982\u4f55\u4fee\u5fa9 ORA-48488 \u932f\u8aa4<\/h2>\n<p>\u4fee\u5fa9 ORA-48488 \u932f\u8aa4\u7684\u904e\u7a0b\u901a\u5e38\u5305\u62ec\u4ee5\u4e0b\u5e7e\u500b\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e7%a2%ba%e8%aa%8d%e5%ad%97%e7%ac%a6%e4%b8%b2%e9%95%b7%e5%ba%a6-HiGjAegQJE\">1. \u78ba\u8a8d\u5b57\u7b26\u4e32\u9577\u5ea6<\/h3>\n<p>\u9996\u5148\uff0c\u6aa2\u67e5\u5f15\u767c\u932f\u8aa4\u7684\u5b57\u7b26\u4e32\uff0c\u78ba\u4fdd\u5176\u9577\u5ea6\u5728 Oracle \u6578\u64da\u5eab\u6240\u5141\u8a31\u7684\u7bc4\u570d\u5167\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u67e5\u8a62\u4f86\u6aa2\u67e5\u5b57\u7b26\u4e32\u7684\u9577\u5ea6\uff1a<\/p>\n<pre><code>SELECT LENGTH(your_column) FROM your_table WHERE your_condition;<\/code><\/pre>\n<h3 id=\"2-%e8%aa%bf%e6%95%b4%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b-HiGjAegQJE\">2. \u8abf\u6574\u6578\u64da\u985e\u578b<\/h3>\n<p>\u5982\u679c\u5b57\u7b26\u4e32\u9577\u5ea6\u78ba\u5be6\u8d85\u904e\u4e86\u9650\u5236\uff0c\u53ef\u4ee5\u8003\u616e\u8abf\u6574\u6578\u64da\u985e\u578b\u3002\u4f8b\u5982\uff0c\u5c07 VARCHAR2 \u7684\u9577\u5ea6\u589e\u52a0\uff0c\u6216\u4f7f\u7528 CLOB \u985e\u578b\u4f86\u5b58\u5132\u66f4\u9577\u7684\u5b57\u7b26\u4e32\u3002\u4ee5\u4e0b\u662f\u8abf\u6574\u6578\u64da\u985e\u578b\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>ALTER TABLE your_table MODIFY your_column VARCHAR2(4000);<\/code><\/pre>\n<h3 id=\"3-%e6%aa%a2%e6%9f%a5%e6%95%b8%e6%93%9a%e8%99%95%e7%90%86%e9%82%8f%e8%bc%af-HiGjAegQJE\">3. \u6aa2\u67e5\u6578\u64da\u8655\u7406\u908f\u8f2f<\/h3>\n<p>\u6aa2\u67e5\u61c9\u7528\u7a0b\u5e8f\u4e2d\u7684\u6578\u64da\u8655\u7406\u908f\u8f2f\uff0c\u78ba\u4fdd\u5728\u62fc\u63a5\u6216\u8655\u7406\u5b57\u7b26\u4e32\u6642\u4e0d\u6703\u8d85\u51fa\u9577\u5ea6\u9650\u5236\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u78bc\u793a\u4f8b\u4f86\u5b89\u5168\u5730\u62fc\u63a5\u5b57\u7b26\u4e32\uff1a<\/p>\n<pre><code>DECLARE\n    v_string VARCHAR2(4000);\nBEGIN\n    v_string := 'Your string here';\n    IF LENGTH(v_string) + LENGTH('additional string') &lt;= 4000 THEN\n        v_string := v_string || 'additional string';\n    ELSE\n        RAISE_APPLICATION_ERROR(-20001, 'String length exceeds limit');\n    END IF;\nEND;<\/code><\/pre>\n<h3 id=\"4-%e4%bd%bf%e7%94%a8%e9%81%a9%e7%95%b6%e7%9a%84%e5%87%bd%e6%95%b8-HiGjAegQJE\">4. \u4f7f\u7528\u9069\u7576\u7684\u51fd\u6578<\/h3>\n<p>\u5728\u4f7f\u7528 Oracle \u51fd\u6578\u6642\uff0c\u78ba\u4fdd\u9078\u64c7\u5408\u9069\u7684\u51fd\u6578\u4f86\u8655\u7406\u5b57\u7b26\u4e32\u3002\u4f8b\u5982\uff0c\u4f7f\u7528 SUBSTR \u51fd\u6578\u6642\uff0c\u61c9\u8a72\u5c0f\u5fc3\u6307\u5b9a\u7684\u8d77\u59cb\u4f4d\u7f6e\u548c\u9577\u5ea6\uff0c\u4ee5\u907f\u514d\u8d85\u51fa\u7bc4\u570d\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-HiGjAegQJE\">\u7d50\u8ad6<\/h2>\n<p>ORA-48488 \u932f\u8aa4\u662f Oracle \u6578\u64da\u5eab\u4e2d\u5e38\u898b\u7684\u554f\u984c\u4e4b\u4e00\uff0c\u4e86\u89e3\u5176\u539f\u56e0\u548c\u4fee\u5fa9\u65b9\u6cd5\u5c0d\u65bc\u958b\u767c\u8005\u548c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u4f86\u8aaa\u81f3\u95dc\u91cd\u8981\u3002\u901a\u904e\u6aa2\u67e5\u5b57\u7b26\u4e32\u9577\u5ea6\u3001\u8abf\u6574\u6578\u64da\u985e\u578b\u3001\u6aa2\u67e5\u6578\u64da\u8655\u7406\u908f\u8f2f\u4ee5\u53ca\u4f7f\u7528\u9069\u7576\u7684\u51fd\u6578\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u6b64\u554f\u984c\u3002<\/p>\n<p>\u5982\u9700\u9032\u4e00\u6b65\u4e86\u89e3\u5982\u4f55\u512a\u5316\u60a8\u7684\u6578\u64da\u5eab\u74b0\u5883\uff0c\u6216\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u89e3\u6c7a ORA-48488 \u932f\u8aa4\uff0c\u8a72\u932f\u8aa4\u56e0\u8b02\u8a5e\u8d85\u904e\u6700\u5927\u9577\u5ea6\u800c\u767c\u751f\u3002\u4e86\u89e3\u6545\u969c\u4fee\u5fa9\u548c\u9060\u7a0b\u8655\u7406\u65b9\u6cd5\uff0c\u63d0\u5347\u6578\u64da\u5eab\u6027\u80fd\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-93158","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/93158","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=93158"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/93158\/revisions"}],"predecessor-version":[{"id":93159,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/93158\/revisions\/93159"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=93158"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=93158"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=93158"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}