{"id":96262,"date":"2024-10-20T07:57:19","date_gmt":"2024-10-19T23:57:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/96262\/"},"modified":"2024-10-20T07:57:20","modified_gmt":"2024-10-19T23:57:20","slug":"oracle%e4%b8%ad%e5%88%a9%e7%94%a8blob%e5%ad%97%e6%ae%b5%e5%ad%98%e5%84%b24gb%e4%bb%a5%e4%b8%8b%e8%a6%96%e9%a0%bb%e6%95%b8%e6%93%9a","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/96262\/","title":{"rendered":"Oracle\u4e2d\u5229\u7528BLOB\u5b57\u6bb5\u5b58\u51324GB\u4ee5\u4e0b\u8996\u983b\u6578\u64da"},"content":{"rendered":"

Oracle\u4e2d\u5229\u7528BLOB\u5b57\u6bb5\u5b58\u51324GB\u4ee5\u4e0b\u8996\u983b\u6578\u64da<\/h1>\n

\u5728\u7576\u4eca\u6578\u5b57\u5316\u7684\u6642\u4ee3\uff0c\u8996\u983b\u6578\u64da\u7684\u5b58\u5132\u548c\u7ba1\u7406\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u91cd\u8981\u3002Oracle\u6578\u64da\u5eab\u63d0\u4f9b\u4e86\u591a\u7a2e\u6578\u64da\u985e\u578b\u4f86\u652f\u6301\u4e0d\u540c\u985e\u578b\u7684\u6578\u64da\u5b58\u5132\uff0c\u5176\u4e2dBLOB\uff08Binary Large Object\uff09\u5b57\u6bb5\u662f\u4e00\u7a2e\u5c08\u9580\u7528\u65bc\u5b58\u5132\u5927\u578b\u4e8c\u9032\u5236\u6578\u64da\u7684\u6578\u64da\u985e\u578b\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728Oracle\u4e2d\u5229\u7528BLOB\u5b57\u6bb5\u5b58\u51324GB\u4ee5\u4e0b\u7684\u8996\u983b\u6578\u64da\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n

BLOB\u5b57\u6bb5\u6982\u8ff0<\/h2>\n

BLOB\u5b57\u6bb5\u662f\u4e00\u7a2e\u53ef\u4ee5\u5b58\u5132\u5927\u91cf\u4e8c\u9032\u5236\u6578\u64da\u7684\u6578\u64da\u985e\u578b\uff0c\u901a\u5e38\u7528\u65bc\u5b58\u5132\u5716\u50cf\u3001\u97f3\u983b\u548c\u8996\u983b\u7b49\u5a92\u9ad4\u6587\u4ef6\u3002BLOB\u5b57\u6bb5\u7684\u6700\u5927\u5b58\u5132\u5bb9\u91cf\u53ef\u9054\u52304GB\uff0c\u9019\u4f7f\u5f97\u5b83\u975e\u5e38\u9069\u5408\u7528\u65bc\u5b58\u5132\u8996\u983b\u6578\u64da\u3002\u4f7f\u7528BLOB\u5b57\u6bb5\u7684\u4e3b\u8981\u512a\u52e2\u5728\u65bc\uff0c\u5b83\u80fd\u5920\u6709\u6548\u5730\u7ba1\u7406\u548c\u6aa2\u7d22\u5927\u578b\u6587\u4ef6\uff0c\u4e26\u4e14\u652f\u6301\u4e8b\u52d9\u8655\u7406\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u3002<\/p>\n

\u5275\u5efaBLOB\u5b57\u6bb5\u7684\u8868<\/h2>\n

\u5728Oracle\u4e2d\uff0c\u9996\u5148\u9700\u8981\u5275\u5efa\u4e00\u500b\u5305\u542bBLOB\u5b57\u6bb5\u7684\u8868\u3002\u4ee5\u4e0b\u662f\u5275\u5efa\u4e00\u500b\u540d\u70ba\u201cvideos\u201d\u7684\u8868\u7684SQL\u8a9e\u53e5\u793a\u4f8b\uff1a<\/p>\n

CREATE TABLE videos (\n    id NUMBER GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,\n    video_name VARCHAR2(255),\n    video_data BLOB,\n    upload_date TIMESTAMP DEFAULT CURRENT_TIMESTAMP\n);<\/code><\/pre>\n
\u5728\u9019\u500b\u8868\u4e2d\uff0cvideo_data<\/code>\u5b57\u6bb5\u88ab\u5b9a\u7fa9\u70baBLOB\u985e\u578b\uff0c\u7528\u65bc\u5b58\u5132\u8996\u983b\u6578\u64da\u3002<\/p>\n
\u63d2\u5165\u8996\u983b\u6578\u64da<\/h2>\n
\u8981\u5c07\u8996\u983b\u6578\u64da\u63d2\u5165\u5230BLOB\u5b57\u6bb5\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528PL\/SQL\u7a0b\u5e8f\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u5c07\u8996\u983b\u6587\u4ef6\u63d2\u5165\u5230\u201cvideos\u201d\u8868\u4e2d\uff1a<\/p>\n
DECLARE\n    v_bfile BFILE;\n    v_blob BLOB;\nBEGIN\n    -- \u521d\u59cb\u5316BLOB\n    DBMS_LOB.CREATETEMPORARY(v_blob, TRUE);\n    \n    -- \u6307\u5b9a\u8981\u63d2\u5165\u7684\u8996\u983b\u6587\u4ef6\n    v_bfile := BFILENAME('VIDEO_DIR', 'example_video.mp4');\n    \n    -- \u6253\u958bBFILE\n    DBMS_LOB.OPEN(v_bfile, DBMS_LOB.LOB_READONLY);\n    \n    -- \u5c07BFILE\u6578\u64da\u5beb\u5165BLOB\n    DBMS_LOB.LOADFROMFILE(v_blob, v_bfile, DBMS_LOB.GETLENGTH(v_bfile));\n    \n    -- \u63d2\u5165\u6578\u64da\u5230\u8868\u4e2d\n    INSERT INTO videos (video_name, video_data) VALUES ('example_video.mp4', v_blob);\n    \n    -- \u95dc\u9589BFILE\n    DBMS_LOB.CLOSE(v_bfile);\n    \n    -- \u91cb\u653e\u81e8\u6642BLOB\n    DBMS_LOB.FREETEMPORARY(v_blob);\nEND; <\/code><\/pre>\n
\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u9996\u5148\u5275\u5efa\u4e86\u4e00\u500b\u81e8\u6642\u7684BLOB\uff0c\u7136\u5f8c\u4f7f\u7528BFILENAME<\/code>\u51fd\u6578\u6307\u5b9a\u8981\u63d2\u5165\u7684\u8996\u983b\u6587\u4ef6\uff0c\u63a5\u8457\u5c07\u8996\u983b\u6578\u64da\u5f9eBFILE\u8b80\u53d6\u5230BLOB\u4e2d\uff0c\u6700\u5f8c\u5c07\u5176\u63d2\u5165\u5230\u201cvideos\u201d\u8868\u4e2d\u3002<\/p>\n
\u6aa2\u7d22\u8996\u983b\u6578\u64da<\/h2>\n
\u6aa2\u7d22\u5b58\u5132\u5728BLOB\u5b57\u6bb5\u4e2d\u7684\u8996\u983b\u6578\u64da\u540c\u6a23\u7c21\u55ae\u3002\u4ee5\u4e0b\u662f\u5f9e\u201cvideos\u201d\u8868\u4e2d\u6aa2\u7d22\u8996\u983b\u6578\u64da\u7684\u793a\u4f8b\uff1a<\/p>\n
DECLARE\n    v_blob BLOB;\n    v_dest BFILE;\nBEGIN\n    -- \u67e5\u8a62\u8996\u983b\u6578\u64da\n    SELECT video_data INTO v_blob FROM videos WHERE id = 1;\n    \n    -- \u521d\u59cb\u5316BFILE\n    v_dest := BFILENAME('VIDEO_DIR', 'retrieved_video.mp4');\n    \n    -- \u6253\u958bBFILE\n    DBMS_LOB.OPEN(v_dest, DBMS_LOB.LOB_READWRITE);\n    \n    -- \u5c07BLOB\u6578\u64da\u5beb\u5165BFILE\n    DBMS_LOB.WRITEAPPEND(v_dest, DBMS_LOB.GETLENGTH(v_blob), v_blob);\n    \n    -- \u95dc\u9589BFILE\n    DBMS_LOB.CLOSE(v_dest);\nEND; <\/code><\/pre>\n
\u9019\u6bb5\u4ee3\u78bc\u5f9e\u201cvideos\u201d\u8868\u4e2d\u6aa2\u7d22\u6307\u5b9aID\u7684\u8996\u983b\u6578\u64da\uff0c\u4e26\u5c07\u5176\u5beb\u5165\u5230\u6307\u5b9a\u7684BFILE\u4e2d\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u5229\u7528Oracle\u7684BLOB\u5b57\u6bb5\u5b58\u51324GB\u4ee5\u4e0b\u7684\u8996\u983b\u6578\u64da\u662f\u4e00\u500b\u9ad8\u6548\u4e14\u53ef\u9760\u7684\u89e3\u6c7a\u65b9\u6848\u3002\u901a\u904e\u5275\u5efa\u5408\u9069\u7684\u8868\u7d50\u69cb\u3001\u63d2\u5165\u548c\u6aa2\u7d22\u8996\u983b\u6578\u64da\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u7ba1\u7406\u5927\u578b\u5a92\u9ad4\u6587\u4ef6\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6027\u80fd\u548c\u53ef\u64f4\u5c55\u6027\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u548c\u670d\u52d9\u5668\u67b6\u69cb\u81f3\u95dc\u91cd\u8981\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u7a69\u5b9a\u7684 \u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\u4ee5\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22\u5982\u4f55\u5728Oracle\u4e2d\u4f7f\u7528BLOB\u5b57\u6bb5\u5b58\u51324GB\u4ee5\u4e0b\u7684\u8996\u983b\u6578\u64da\uff0c\u5be6\u73fe\u9ad8\u6548\u6578\u64da\u7ba1\u7406\u8207\u5b58\u53d6\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-96262","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96262","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=96262"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96262\/revisions"}],"predecessor-version":[{"id":96263,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96262\/revisions\/96263"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=96262"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=96262"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=96262"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}