{"id":91854,"date":"2024-10-19T00:43:18","date_gmt":"2024-10-18T16:43:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/91854\/"},"modified":"2024-10-19T00:43:19","modified_gmt":"2024-10-18T16:43:19","slug":"ora-32117-%e6%ba%90-lob-%e7%82%ba%e7%a9%ba-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\/91854\/","title":{"rendered":"ORA-32117: \u6e90 LOB \u70ba\u7a7a ORACLE \u5831\u932f \u6545\u969c\u4fee\u5fa9 \u9060\u7a0b\u8655\u7406"},"content":{"rendered":"<h1 id=\"ora-32117-%e6%ba%90-lob-%e7%82%ba%e7%a9%ba-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-jvbuOniEfk\">ORA-32117: \u6e90 LOB \u70ba\u7a7a 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\u4fbf\u662f <code>ORA-32117<\/code>\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u8868\u793a\u6e90 LOB\uff08Large Object\uff09\u70ba\u7a7a\uff0c\u9019\u53ef\u80fd\u6703\u5c0e\u81f4\u6578\u64da\u64cd\u4f5c\u5931\u6557\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-lob%ef%bc%9f-jvbuOniEfk\">\u4ec0\u9ebc\u662f LOB\uff1f<\/h2>\n<p>LOB\uff08Large Object\uff09\u662f\u4e00\u7a2e\u7528\u65bc\u5b58\u5132\u5927\u91cf\u6578\u64da\u7684\u6578\u64da\u985e\u578b\uff0c\u901a\u5e38\u7528\u65bc\u5b58\u5132\u5716\u7247\u3001\u97f3\u983b\u3001\u8996\u983b\u6216\u5176\u4ed6\u5927\u578b\u6587\u672c\u6578\u64da\u3002\u5728 Oracle \u6578\u64da\u5eab\u4e2d\uff0cLOB \u985e\u578b\u4e3b\u8981\u5206\u70ba\u4e09\u7a2e\uff1a<\/p>\n<ul>\n<li><strong>BLOB<\/strong>\uff08Binary Large Object\uff09\uff1a\u7528\u65bc\u5b58\u5132\u4e8c\u9032\u5236\u6578\u64da\u3002<\/li>\n<li><strong>CLOB<\/strong>\uff08Character Large Object\uff09\uff1a\u7528\u65bc\u5b58\u5132\u5b57\u7b26\u6578\u64da\u3002<\/li>\n<li><strong>NCLOB<\/strong>\uff1a\u7528\u65bc\u5b58\u5132\u570b\u969b\u5b57\u7b26\u6578\u64da\u3002<\/li>\n<\/ul>\n<h2 id=\"ora-32117-%e9%8c%af%e8%aa%a4%e7%9a%84%e5%8e%9f%e5%9b%a0-jvbuOniEfk\">ORA-32117 \u932f\u8aa4\u7684\u539f\u56e0<\/h2>\n<p>\u7576\u4f60\u5728\u64cd\u4f5c LOB \u6642\uff0c\u5982\u679c\u9047\u5230 <code>ORA-32117<\/code> \u932f\u8aa4\uff0c\u901a\u5e38\u662f\u7531\u65bc\u4ee5\u4e0b\u5e7e\u500b\u539f\u56e0\uff1a<\/p>\n<ul>\n<li><strong>\u6e90 LOB \u70ba\u7a7a\uff1a<\/strong>\u9019\u662f\u6700\u5e38\u898b\u7684\u539f\u56e0\u3002\u5982\u679c\u4f60\u5617\u8a66\u5f9e\u4e00\u500b\u7a7a\u7684 LOB \u5c0d\u8c61\u8b80\u53d6\u6578\u64da\uff0c\u5247\u6703\u5f15\u767c\u6b64\u932f\u8aa4\u3002<\/li>\n<li><strong>\u6578\u64da\u5eab\u9023\u63a5\u554f\u984c\uff1a<\/strong>\u5982\u679c\u5728\u64cd\u4f5c LOB \u6642\uff0c\u6578\u64da\u5eab\u9023\u63a5\u4e0d\u7a69\u5b9a\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u6578\u64da\u7121\u6cd5\u6b63\u78ba\u8b80\u53d6\u3002<\/li>\n<li><strong>\u4e0d\u6b63\u78ba\u7684 SQL \u8a9e\u53e5\uff1a<\/strong>\u5982\u679c SQL \u8a9e\u53e5\u4e2d\u5c0d LOB \u7684\u64cd\u4f5c\u4e0d\u6b63\u78ba\uff0c\u4e5f\u53ef\u80fd\u5c0e\u81f4\u6b64\u932f\u8aa4\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-jvbuOniEfk\">\u6545\u969c\u4fee\u5fa9\u6b65\u9a5f<\/h2>\n<p>\u7576\u9047\u5230 <code>ORA-32117<\/code> \u932f\u8aa4\u6642\uff0c\u53ef\u4ee5\u6309\u7167\u4ee5\u4e0b\u6b65\u9a5f\u9032\u884c\u6545\u969c\u4fee\u5fa9\uff1a<\/p>\n<h3 id=\"1-%e6%aa%a2%e6%9f%a5-lob-%e5%b0%8d%e8%b1%a1-jvbuOniEfk\">1. \u6aa2\u67e5 LOB \u5c0d\u8c61<\/h3>\n<p>\u9996\u5148\uff0c\u6aa2\u67e5\u6e90 LOB \u5c0d\u8c61\u662f\u5426\u70ba\u7a7a\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u67e5\u8a62\u4f86\u78ba\u8a8d\uff1a<\/p>\n<pre><code>SELECT DBMS_LOB.GETLENGTH(your_lob_column) FROM your_table WHERE your_condition;<\/code><\/pre>\n<p>\u5982\u679c\u8fd4\u56de\u7684\u9577\u5ea6\u70ba 0\uff0c\u5247\u8868\u793a\u8a72 LOB \u5c0d\u8c61\u70ba\u7a7a\u3002<\/p>\n<h3 id=\"2-%e7%a2%ba%e8%aa%8d%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5-jvbuOniEfk\">2. \u78ba\u8a8d\u6578\u64da\u5eab\u9023\u63a5<\/h3>\n<p>\u6aa2\u67e5\u6578\u64da\u5eab\u9023\u63a5\u662f\u5426\u6b63\u5e38\u3002\u53ef\u4ee5\u901a\u904e\u57f7\u884c\u7c21\u55ae\u7684\u67e5\u8a62\u4f86\u78ba\u8a8d\u9023\u63a5\u662f\u5426\u7a69\u5b9a\uff1a<\/p>\n<pre><code>SELECT 1 FROM dual;<\/code><\/pre>\n<h3 id=\"3-%e6%aa%a2%e6%9f%a5-sql-%e8%aa%9e%e5%8f%a5-jvbuOniEfk\">3. \u6aa2\u67e5 SQL \u8a9e\u53e5<\/h3>\n<p>\u78ba\u4fdd\u4f60\u7684 SQL \u8a9e\u53e5\u6b63\u78ba\u7121\u8aa4\uff0c\u7279\u5225\u662f\u5728\u64cd\u4f5c LOB \u6642\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u6b63\u78ba\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>INSERT INTO your_table (your_lob_column) VALUES (EMPTY_CLOB()) RETURNING your_lob_column INTO :your_lob_variable;<\/code><\/pre>\n<h3 id=\"4-%e4%bd%bf%e7%94%a8-pl-sql-%e9%80%b2%e8%a1%8c%e8%99%95%e7%90%86-jvbuOniEfk\">4. \u4f7f\u7528 PL\/SQL \u9032\u884c\u8655\u7406<\/h3>\n<p>\u5982\u679c\u4ee5\u4e0a\u6b65\u9a5f\u7121\u6cd5\u89e3\u6c7a\u554f\u984c\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528 PL\/SQL \u9032\u884c\u66f4\u7d30\u7dfb\u7684\u8655\u7406\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n<pre><code>DECLARE\n    l_blob BLOB;\nBEGIN\n    SELECT your_lob_column INTO l_blob FROM your_table WHERE your_condition;\n    IF DBMS_LOB.GETLENGTH(l_blob) = 0 THEN\n        DBMS_OUTPUT.PUT_LINE('LOB is empty');\n    ELSE\n        -- \u9032\u884c\u5176\u4ed6\u64cd\u4f5c\n    END IF;\nEND;<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-jvbuOniEfk\">\u7e3d\u7d50<\/h2>\n<p>\u5728 Oracle \u6578\u64da\u5eab\u4e2d\uff0c<code>ORA-32117<\/code> \u932f\u8aa4\u901a\u5e38\u662f\u7531\u65bc\u6e90 LOB \u70ba\u7a7a\u6240\u5f15\u8d77\u7684\u3002\u901a\u904e\u6aa2\u67e5 LOB \u5c0d\u8c61\u3001\u78ba\u8a8d\u6578\u64da\u5eab\u9023\u63a5\u3001\u6aa2\u67e5 SQL \u8a9e\u53e5\u4ee5\u53ca\u4f7f\u7528 PL\/SQL \u9032\u884c\u8655\u7406\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u6b64\u554f\u984c\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u4f01\u696d\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2f VPS<\/a> \u6216 <a href=\"https:\/\/server.hk\">\u96f2\u4f3a\u670d\u5668<\/a> \u89e3\u6c7a\u65b9\u6848\u5c07\u6709\u52a9\u65bc\u63d0\u5347\u6578\u64da\u5eab\u7684\u7a69\u5b9a\u6027\u548c\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u89e3\u6c7a ORA-32117 \u932f\u8aa4\uff0c\u6e90 LOB \u70ba\u7a7a\u7684\u554f\u984c\uff0c\u63d0\u4f9b\u6545\u969c\u4fee\u5fa9\u548c\u9060\u7a0b\u8655\u7406\u7684\u6709\u6548\u65b9\u6cd5\u8207\u6b65\u9a5f\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-91854","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/91854","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=91854"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/91854\/revisions"}],"predecessor-version":[{"id":91855,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/91854\/revisions\/91855"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=91854"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=91854"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=91854"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}