{"id":199773,"date":"2025-05-06T10:29:49","date_gmt":"2025-05-06T02:29:49","guid":{"rendered":"https:\/\/server.hk\/cnblog\/199773\/"},"modified":"2025-05-06T10:29:49","modified_gmt":"2025-05-06T02:29:49","slug":"%e5%bd%b1%e5%93%8d%e5%92%8c%e8%a7%84%e9%81%bforacle%e8%a1%a8%e9%94%81%e5%ae%9a","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/199773\/","title":{"rendered":"\u5f71\u54cd\u548c\u89c4\u907fOracle\u8868\u9501\u5b9a"},"content":{"rendered":"

<\/b> <\/p>\n

\u5f71\u54cd\u548c\u89c4\u907fOracle\u8868\u9501\u5b9a<\/h1>\n

\u76ee\u524d\u4e3b\u673a\u5b9d\u8d1d\u4e0a\u5df2\u7ecf\u6709\u5f88\u591a\u5173\u4e8e\u7684\u6587\u7ae0\u4e86\uff0c\u81ea\u5df1\u5728\u521d\u6b21\u9605\u8bfb\u8fd9\u4e9b\u6587\u7ae0\u4e2d\uff0c\u4e5f\u89c1\u8bc6\u5230\u4e86\u5f88\u591a\u5b66\u4e60\u601d\u8def\uff1b\u90a3\u4e48\u672c\u6587\uff0c\u4e5f\u5e0c\u671b\u80fd\u5e2e\u52a9\u5230\u5927\u5bb6\uff0c\u5982\u679c\u9605\u8bfb\u5b8c\u540e\u771f\u7684\u5bf9\u4f60\u5b66\u4e60\u6709\u5e2e\u52a9\uff0c\u6b22\u8fce\u52a8\u52a8\u624b\u6307\uff0c\u8bc4\u8bba\u7559\u8a00\u5e76\u5206\u4eab~<\/p>\n

\u6807\u9898\uff1aOracle\u8868\u9501\u5b9a\u7684\u5f71\u54cd\u53ca\u907f\u514d\u65b9\u6cd5<\/p>\n

\u5728Oracle\u6570\u636e\u5e93\u4e2d\uff0c\u8868\u9501\u5b9a\u662f\u4e00\u4e2a\u5e38\u89c1\u7684\u95ee\u9898\uff0c\u5f53\u591a\u4e2a\u7528\u6237\u540c\u65f6\u8bbf\u95ee\u540c\u4e00\u4e2a\u8868\u65f6\uff0c\u53ef\u80fd\u4f1a\u53d1\u751f\u8868\u9501\u5b9a\uff0c\u5bfc\u81f4\u5176\u4ed6\u7528\u6237\u65e0\u6cd5\u6b63\u5e38\u8bbf\u95ee\u8be5\u8868\uff0c\u4ece\u800c\u5f71\u54cd\u7cfb\u7edf\u6027\u80fd\u548c\u6570\u636e\u7684\u4e00\u81f4\u6027\u3002\u672c\u6587\u5c06\u63a2\u8ba8Oracle\u8868\u9501\u5b9a\u7684\u5f71\u54cd\u3001\u5e38\u89c1\u7684\u8868\u9501\u5b9a\u7c7b\u578b\u4ee5\u53ca\u907f\u514d\u8868\u9501\u5b9a\u7684\u65b9\u6cd5\uff0c\u5e76\u63d0\u4f9b\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n

\u4e00\u3001Oracle\u8868\u9501\u5b9a\u7684\u5f71\u54cd<\/p>\n

1.1 \u6570\u636e\u4e0d\u4e00\u81f4\u6027\uff1a\u5f53\u4e00\u4e2a\u7528\u6237\u5bf9\u8868\u6267\u884c\u5199\u64cd\u4f5c\u65f6\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u5176\u4ed6\u7528\u6237\u65e0\u6cd5\u8bfb\u53d6\u6216\u4fee\u6539\u8be5\u8868\u7684\u6570\u636e\uff0c\u4ece\u800c\u5bfc\u81f4\u6570\u636e\u4e0d\u4e00\u81f4\u7684\u95ee\u9898\u3002<\/p>\n

1.2 \u6027\u80fd\u4e0b\u964d\uff1a\u8868\u9501\u5b9a\u4f1a\u5bfc\u81f4\u7cfb\u7edf\u6027\u80fd\u4e0b\u964d\uff0c\u56e0\u4e3a\u5176\u4ed6\u7528\u6237\u65e0\u6cd5\u6b63\u5e38\u8bbf\u95ee\u88ab\u9501\u5b9a\u7684\u8868\uff0c\u4ece\u800c\u5bfc\u81f4\u8bf7\u6c42\u963b\u585e\u548c\u5ef6\u8fdf\u3002<\/p>\n

1.3 \u6b7b\u9501\uff1a\u5982\u679c\u591a\u4e2a\u7528\u6237\u4e4b\u95f4\u5b58\u5728\u5faa\u73af\u9501\u5b9a\u7684\u60c5\u51b5\uff0c\u53ef\u80fd\u5bfc\u81f4\u6570\u636e\u5e93\u51fa\u73b0\u6b7b\u9501\uff0c\u4f7f\u5f97\u6240\u6709\u76f8\u5173\u7684\u4e8b\u52a1\u90fd\u65e0\u6cd5\u7ee7\u7eed\u6267\u884c\u3002<\/p>\n

\u4e8c\u3001\u5e38\u89c1\u7684\u8868\u9501\u5b9a\u7c7b\u578b<\/p>\n

2.1 \u5171\u4eab\u9501\uff08Shared Lock\uff09\uff1a\u5f53\u4e00\u4e2a\u7528\u6237\u5bf9\u8868\u6267\u884c\u8bfb\u64cd\u4f5c\u65f6\uff0c\u4f1a\u83b7\u53d6\u5171\u4eab\u9501\uff0c\u5176\u4ed6\u7528\u6237\u53ef\u4ee5\u7ee7\u7eed\u8bfb\u53d6\u8be5\u8868\uff0c\u4f46\u4e0d\u80fd\u4fee\u6539\u6570\u636e\uff0c\u591a\u4e2a\u5171\u4eab\u9501\u4e4b\u95f4\u4e0d\u4f1a\u53d1\u751f\u51b2\u7a81\u3002<\/p>\n

2.2 \u6392\u4ed6\u9501\uff08Exclusive Lock\uff09\uff1a\u5f53\u4e00\u4e2a\u7528\u6237\u5bf9\u8868\u6267\u884c\u5199\u64cd\u4f5c\u65f6\uff0c\u4f1a\u83b7\u53d6\u6392\u4ed6\u9501\uff0c\u5176\u4ed6\u7528\u6237\u65e0\u6cd5\u5bf9\u8be5\u8868\u6267\u884c\u8bfb\u53d6\u6216\u5199\u64cd\u4f5c\uff0c\u76f4\u5230\u6392\u4ed6\u9501\u91ca\u653e\u3002<\/p>\n

2.3 \u8868\u7ea7\u9501\uff08Table Lock\uff09\uff1a\u5f53\u4e00\u4e2a\u7528\u6237\u5bf9\u6574\u4e2a\u8868\u6267\u884c\u64cd\u4f5c\u65f6\uff0c\u4f1a\u5bf9\u6574\u4e2a\u8868\u8fdb\u884c\u9501\u5b9a\uff0c\u5176\u4ed6\u7528\u6237\u65e0\u6cd5\u5bf9\u8be5\u8868\u8fdb\u884c\u5e76\u53d1\u64cd\u4f5c\u3002<\/p>\n

\u4e09\u3001\u907f\u514d\u8868\u9501\u5b9a\u7684\u65b9\u6cd5<\/p>\n

3.1 \u4f7f\u7528\u5408\u9002\u7684\u4e8b\u52a1\u9694\u79bb\u7ea7\u522b\uff1a\u5408\u9002\u5730\u8bbe\u7f6e\u4e8b\u52a1\u7684\u9694\u79bb\u7ea7\u522b\u53ef\u4ee5\u51cf\u5c11\u8868\u9501\u5b9a\u7684\u53d1\u751f\uff0c\u4f8b\u5982\u4f7f\u7528READ COMMITTED\u9694\u79bb\u7ea7\u522b\u53ef\u4ee5\u51cf\u5c11\u9501\u5b9a\u51b2\u7a81\u7684\u6982\u7387\u3002<\/p>\n

3.2 \u5c3d\u91cf\u51cf\u5c11\u4e8b\u52a1\u7684\u957f\u5ea6\uff1a\u5c06\u4e8b\u52a1\u5c3d\u91cf\u4fdd\u6301\u8f83\u77ed\u7684\u65f6\u95f4\u8303\u56f4\u5185\uff0c\u51cf\u5c11\u9501\u5b9a\u7684\u65f6\u95f4\uff0c\u53ef\u4ee5\u964d\u4f4e\u8868\u9501\u5b9a\u7684\u98ce\u9669\u3002<\/p>\n

3.3 \u4f7f\u7528\u884c\u7ea7\u9501\uff1a\u5728\u9700\u8981\u5e76\u53d1\u8bbf\u95ee\u7684\u60c5\u51b5\u4e0b\uff0c\u5c3d\u91cf\u4f7f\u7528\u884c\u7ea7\u9501\u800c\u4e0d\u662f\u8868\u7ea7\u9501\uff0c\u907f\u514d\u4e00\u6b21\u9501\u5b9a\u6574\u4e2a\u8868\u3002<\/p>\n

3.4 \u4f7f\u7528\u7d22\u5f15\uff1a\u5408\u7406\u5730\u8bbe\u8ba1\u548c\u4f7f\u7528\u7d22\u5f15\u53ef\u4ee5\u51cf\u5c11\u67e5\u8be2\u6240\u6d89\u53ca\u7684\u6570\u636e\u91cf\uff0c\u51cf\u5c11\u9501\u5b9a\u7684\u8303\u56f4\uff0c\u63d0\u9ad8\u5e76\u53d1\u8bbf\u95ee\u6027\u80fd\u3002<\/p>\n

\u4e0b\u9762\u662f\u4e00\u4e9b\u907f\u514d\u8868\u9501\u5b9a\u7684\u5177\u4f53\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n

-- \u8bbe\u7f6e\u4e8b\u52a1\u9694\u79bb\u7ea7\u522b\u4e3aREAD COMMITTED\nSET TRANSACTION ISOLATION LEVEL READ COMMITTED;\n\n-- \u4f7f\u7528\u884c\u7ea7\u9501\u8fdb\u884c\u66f4\u65b0\u64cd\u4f5c\nUPDATE table_name\nSET column_name = 'value'\nWHERE id = 1\nFOR UPDATE;\n\n-- \u521b\u5efa\u9002\u5f53\u7684\u7d22\u5f15\nCREATE INDEX idx_name ON table_name(column_name);<\/pre>\n
\u901a\u8fc7\u4e0a\u8ff0\u65b9\u6cd5\u548c\u4ee3\u7801\u793a\u4f8b\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u907f\u514dOracle\u8868\u9501\u5b9a\u95ee\u9898\u7684\u53d1\u751f\uff0c\u63d0\u9ad8\u7cfb\u7edf\u7684\u6027\u80fd\u548c\u6570\u636e\u7684\u4e00\u81f4\u6027\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u5f00\u53d1\u4eba\u5458\u548cDBA\u9700\u8981\u6839\u636e\u5177\u4f53\u60c5\u51b5\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u6765\u89e3\u51b3\u8868\u9501\u5b9a\u95ee\u9898\uff0c\u4fdd\u8bc1\u6570\u636e\u5e93\u7cfb\u7edf\u7684\u7a33\u5b9a\u8fd0\u884c\u3002<\/p>\n
\u4ee5\u4e0a\u5c31\u662f\u672c\u6587\u7684\u5168\u90e8\u5185\u5bb9\u4e86\uff0c\u662f\u5426\u6709\u987a\u5229\u5e2e\u52a9\u4f60\u89e3\u51b3\u95ee\u9898\uff1f\u82e5\u662f\u80fd\u7ed9\u4f60\u5e26\u6765\u5b66\u4e60\u4e0a\u7684\u5e2e\u52a9\uff0c\u8bf7\u5927\u5bb6\u591a\u591a\u652f\u6301\u4e3b\u673a\u5b9d\u8d1d\uff01\u66f4\u591a\u5173\u4e8e\u6570\u636e\u5e93\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u4e5f\u53ef\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\u3002<\/p>\n
\n
\n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
\u5f71\u54cd\u548c\u89c4\u907fOracle\u8868\u9501\u5b9a \u76ee...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-199773","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199773","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=199773"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199773\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=199773"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=199773"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=199773"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}