{"id":199898,"date":"2025-05-06T10:23:24","date_gmt":"2025-05-06T02:23:24","guid":{"rendered":"https:\/\/server.hk\/cnblog\/199898\/"},"modified":"2025-05-06T10:23:24","modified_gmt":"2025-05-06T02:23:24","slug":"%e6%94%b9%e5%8f%98oracle%e4%b8%ad%e7%9a%84%e6%97%a5%e6%9c%9f%e7%b3%bb%e7%bb%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/199898\/","title":{"rendered":"\u6539\u53d8Oracle\u4e2d\u7684\u65e5\u671f\u7cfb\u7edf"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>\u6539\u53d8Oracle\u4e2d\u7684\u65e5\u671f\u7cfb\u7edf<\/h1>\n<p>\u77e5\u8bc6\u70b9\u638c\u63e1\u4e86\uff0c\u8fd8\u9700\u8981\u4e0d\u65ad\u7ec3\u4e60\u624d\u80fd\u719f\u7ec3\u8fd0\u7528\u3002\u4e0b\u9762\u4e3b\u673a\u5b9d\u8d1d\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u4e2a\u6570\u636e\u5e93\u5f00\u53d1\u5b9e\u6218\uff0c\u624b\u628a\u624b\u6559\u5927\u5bb6\u5b66\u4e60\u300a\u6539\u53d8Oracle\u4e2d\u7684\u65e5\u671f\u7cfb\u7edf\u300b\uff0c\u5728\u5b9e\u73b0\u529f\u80fd\u7684\u8fc7\u7a0b\u4e2d\u4e5f\u5e26\u5927\u5bb6\u91cd\u65b0\u6e29\u4e60\u76f8\u5173\u77e5\u8bc6\u70b9\uff0c\u6e29\u6545\u800c\u77e5\u65b0\uff0c\u56de\u5934\u770b\u770b\u8bf4\u4e0d\u5b9a\u53c8\u6709\u4e0d\u4e00\u6837\u7684\u611f\u609f\uff01<\/p>\n<p>\u6807\u9898\uff1aOracle\u5982\u4f55\u66f4\u6539\u7cfb\u7edf\u65e5\u671f\uff0c\u9644\u8be6\u7ec6\u4ee3\u7801\u793a\u4f8b<\/p>\n<p>\u5728Oracle\u6570\u636e\u5e93\u4e2d\uff0c\u7cfb\u7edf\u65e5\u671f\u662f\u975e\u5e38\u91cd\u8981\u7684\u4e00\u4e2a\u5143\u7d20\uff0c\u5b83\u51b3\u5b9a\u4e86\u6570\u636e\u5e93\u4e2d\u7684\u65f6\u95f4\u51fd\u6570\u548c\u65e5\u671f\u64cd\u4f5c\u7684\u884c\u4e3a\u3002\u6709\u65f6\u5019\uff0c\u5728\u6d4b\u8bd5\u73af\u5883\u6216\u8005\u7279\u5b9a\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u53ef\u80fd\u9700\u8981\u624b\u52a8\u66f4\u6539\u7cfb\u7edf\u65e5\u671f\u6765\u8fdb\u884c\u8c03\u8bd5\u6216\u9a8c\u8bc1\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u5728Oracle\u6570\u636e\u5e93\u4e2d\u66f4\u6539\u7cfb\u7edf\u65e5\u671f\u7684\u65b9\u6cd5\uff0c\u5e76\u63d0\u4f9b\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u4f9b\u53c2\u8003\u3002<\/p>\n<h3>1. \u4f7f\u7528ALTER SYSTEM\u547d\u4ee4\u66f4\u6539\u6570\u636e\u5e93\u65e5\u671f<\/h3>\n<p>\u5728Oracle\u6570\u636e\u5e93\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7ALTER SYSTEM\u547d\u4ee4\u6765\u66f4\u6539\u6570\u636e\u5e93\u7684\u7cfb\u7edf\u65e5\u671f\u3002\u5177\u4f53\u7684\u6b65\u9aa4\u5982\u4e0b\uff1a<\/p>\n<pre>ALTER SYSTEM SET TIME_ZONE = 'UTC';<\/pre>\n<p>\u4ee5\u4e0a\u547d\u4ee4\u5c06\u7cfb\u7edf\u65f6\u533a\u8bbe\u7f6e\u4e3aUTC\u6807\u51c6\u65f6\u95f4\u3002\u4f60\u4e5f\u53ef\u4ee5\u6839\u636e\u9700\u8981\u5c06\u65f6\u95f4\u8bbe\u7f6e\u4e3a\u5176\u4ed6\u65f6\u533a\uff0c\u6216\u8005\u76f4\u63a5\u66f4\u6539\u65e5\u671f\u7684\u65b9\u5f0f\u6765\u8c03\u6574\u7cfb\u7edf\u65e5\u671f\u3002<\/p>\n<h3>2. \u4f7f\u7528DBMS_SCHEDULER\u5305\u66f4\u6539\u6570\u636e\u5e93\u65e5\u671f<\/h3>\n<p>\u53e6\u5916\u4e00\u79cd\u66f4\u6539\u7cfb\u7edf\u65e5\u671f\u7684\u65b9\u6cd5\u662f\u4f7f\u7528Oracle\u63d0\u4f9b\u7684DBMS_SCHEDULER\u5305\u3002\u901a\u8fc7\u521b\u5efa\u4e00\u4e2a\u5b9a\u65f6\u4efb\u52a1\u6765\u66f4\u6539\u7cfb\u7edf\u65e5\u671f\uff0c\u5e76\u5b9a\u65f6\u6267\u884c\u8fd9\u4e2a\u4efb\u52a1\u6765\u5b9e\u73b0\u66f4\u6539\u7cfb\u7edf\u65e5\u671f\u7684\u76ee\u7684\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\uff1a<\/p>\n<pre>BEGIN\n    DBMS_SCHEDULER.CREATE_JOB (\n        job_name        =&gt; 'CHANGE_DATE_JOB',\n        job_type        =&gt; 'PLSQL_BLOCK',\n        job_action      =&gt; 'BEGIN EXECUTE IMMEDIATE ''ALTER SESSION SET NLS_DATE_FORMAT = ''DD-MON-YYYY HH24:MI:SS''''; END;',\n        start_date      =&gt; SYSTIMESTAMP,\n        repeat_interval =&gt; 'FREQ=DAILY; INTERVAL=1',\n        end_date        =&gt; SYSTIMESTAMP + INTERVAL '1' DAY\n    );\n    \n    DBMS_SCHEDULER.ENABLE('CHANGE_DATE_JOB');\nEND;\n\/<\/pre>\n<p>\u4ee5\u4e0a\u4ee3\u7801\u521b\u5efa\u4e86\u4e00\u4e2a\u5b9a\u65f6\u4efb\u52a1CHANGE_DATE_JOB\uff0c\u8be5\u4efb\u52a1\u4f1a\u6bcf\u5929\u91cd\u590d\u6267\u884c\u4e00\u6b21\uff0c\u5c06\u7cfb\u7edf\u65e5\u671f\u7684\u65e5\u671f\u683c\u5f0f\u66f4\u6539\u4e3a&#8217;DD-MON-YYYY HH24:MI:SS&#8217;\uff0c\u4f60\u53ef\u4ee5\u6839\u636e\u9700\u8981\u66f4\u6539\u65e5\u671f\u683c\u5f0f\u4ee5\u53ca\u6267\u884c\u9891\u7387\u3002<\/p>\n<h3>3. \u4f7f\u7528BEFORE TRIGGER\u89e6\u53d1\u5668\u66f4\u6539\u6570\u636e\u5e93\u65e5\u671f<\/h3>\n<p>\u8fd8\u53ef\u4ee5\u901a\u8fc7BEFORE TRIGGER\u89e6\u53d1\u5668\u6765\u5b9e\u73b0\u5728\u7279\u5b9a\u64cd\u4f5c\u89e6\u53d1\u65f6\u66f4\u6539\u7cfb\u7edf\u65e5\u671f\u7684\u529f\u80fd\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre>CREATE OR REPLACE TRIGGER update_date_trigger\nBEFORE INSERT ON my_table\nFOR EACH ROW\nBEGIN\n    :NEW.created_date := SYSTIMESTAMP;\nEND;\n\/<\/pre>\n<p>\u4ee5\u4e0a\u4ee3\u7801\u521b\u5efa\u4e86\u4e00\u4e2aBEFORE INSERT\u89e6\u53d1\u5668\uff0c\u5f53\u63d2\u5165\u6570\u636e\u5230my_table\u8868\u65f6\uff0ccreated_date\u5b57\u6bb5\u4f1a\u81ea\u52a8\u66f4\u65b0\u4e3a\u5f53\u524d\u7cfb\u7edf\u65e5\u671f\u548c\u65f6\u95f4\u3002<\/p>\n<h3>\u603b\u7ed3<\/h3>\n<p>\u901a\u8fc7\u4ee5\u4e0a\u4ecb\u7ecd\uff0c\u6211\u4eec\u4e86\u89e3\u4e86\u5728Oracle\u6570\u636e\u5e93\u4e2d\u66f4\u6539\u7cfb\u7edf\u65e5\u671f\u7684\u51e0\u79cd\u65b9\u6cd5\uff0c\u5305\u62ec\u4f7f\u7528ALTER SYSTEM\u547d\u4ee4\u3001DBMS_SCHEDULER\u5305\u4ee5\u53caBEFORE TRIGGER\u89e6\u53d1\u5668\u3002\u6bcf\u79cd\u65b9\u6cd5\u90fd\u6709\u5176\u9002\u7528\u7684\u573a\u666f\u548c\u4f7f\u7528\u9650\u5236\uff0c\u4f60\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u65b9\u5f0f\u6765\u66f4\u6539\u7cfb\u7edf\u65e5\u671f\u3002<\/p>\n<p>\u5e0c\u671b\u672c\u6587\u63d0\u4f9b\u7684\u4ee3\u7801\u793a\u4f8b\u80fd\u5e2e\u52a9\u4f60\u5728Oracle\u6570\u636e\u5e93\u4e2d\u6210\u529f\u66f4\u6539\u7cfb\u7edf\u65e5\u671f\uff0c\u5b9e\u73b0\u4f60\u7684\u7279\u5b9a\u9700\u6c42\u3002<\/p>\n<p>\u4eca\u5929\u5173\u4e8e\u300a\u6539\u53d8Oracle\u4e2d\u7684\u65e5\u671f\u7cfb\u7edf\u300b\u7684\u5185\u5bb9\u5c31\u4ecb\u7ecd\u5230\u8fd9\u91cc\u4e86\uff0c\u662f\u4e0d\u662f\u5b66\u8d77\u6765\u4e00\u76ee\u4e86\u7136\uff01\u60f3\u8981\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u4fee\u6539\u7cfb\u7edf\u65e5\u671f,\u7cfb\u7edf\u65e5\u671f\u7f16\u8f91\u7684\u5185\u5bb9\u8bf7\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\uff01<\/p>\n<dl>\n<dt>\n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>\u6539\u53d8Oracle\u4e2d\u7684\u65e5\u671f\u7cfb\u7edf \u77e5&#46;&#46;&#46;<\/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-199898","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199898","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=199898"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199898\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=199898"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=199898"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=199898"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}