{"id":199903,"date":"2025-05-06T10:29:33","date_gmt":"2025-05-06T02:29:33","guid":{"rendered":"https:\/\/server.hk\/cnblog\/199903\/"},"modified":"2025-05-06T10:29:33","modified_gmt":"2025-05-06T02:29:33","slug":"%e5%ae%9e%e7%94%a8%e6%8a%80%e5%b7%a7%ef%bc%9a%e5%9c%a8oracle%e4%b8%ad%e4%bf%ae%e6%94%b9%e7%b3%bb%e7%bb%9f%e6%97%a5%e6%9c%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/199903\/","title":{"rendered":"\u5b9e\u7528\u6280\u5de7\uff1a\u5728Oracle\u4e2d\u4fee\u6539\u7cfb\u7edf\u65e5\u671f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>\u5b9e\u7528\u6280\u5de7\uff1a\u5728Oracle\u4e2d\u4fee\u6539\u7cfb\u7edf\u65e5\u671f<\/h1>\n<p>\u672c\u7bc7\u6587\u7ae0\u5411\u5927\u5bb6\u4ecb\u7ecd\u300a\u5b9e\u7528\u6280\u5de7\uff1a\u5728Oracle\u4e2d\u4fee\u6539\u7cfb\u7edf\u65e5\u671f\u300b\uff0c\u4e3b\u8981\u5305\u62ec\uff0c\u5177\u6709\u4e00\u5b9a\u7684\u53c2\u8003\u4ef7\u503c\uff0c\u9700\u8981\u7684\u670b\u53cb\u53ef\u4ee5\u53c2\u8003\u4e00\u4e0b\u3002<\/p>\n<p>\u6807\u9898\uff1aOracle\u4e2d\u8c03\u6574\u7cfb\u7edf\u65e5\u671f\u7684\u5b9e\u7528\u6280\u5de7\u5206\u4eab<\/p>\n<p>\u5728Oracle\u6570\u636e\u5e93\u4e2d\uff0c\u6b63\u786e\u7684\u65e5\u671f\u548c\u65f6\u95f4\u4fe1\u606f\u5bf9\u4e8e\u6570\u636e\u5904\u7406\u548c\u5206\u6790\u81f3\u5173\u91cd\u8981\u3002\u6709\u65f6\u5019\uff0c\u5728\u8c03\u8bd5\u548c\u6d4b\u8bd5\u8fc7\u7a0b\u4e2d\uff0c\u6211\u4eec\u53ef\u80fd\u9700\u8981\u8c03\u6574\u7cfb\u7edf\u65e5\u671f\u6765\u6a21\u62df\u4e0d\u540c\u7684\u65f6\u95f4\u60c5\u51b5\u3002\u672c\u6587\u5c06\u5206\u4eab\u4e00\u4e9b\u5728Oracle\u4e2d\u8c03\u6574\u7cfb\u7edf\u65e5\u671f\u7684\u5b9e\u7528\u6280\u5de7\uff0c\u5305\u62ec\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\uff0c\u5e0c\u671b\u80fd\u591f\u5e2e\u52a9\u8bfb\u8005\u66f4\u597d\u5730\u7ba1\u7406\u7cfb\u7edf\u65e5\u671f\u3002<\/p>\n<h3>1. \u4f7f\u7528SYSDATE\u51fd\u6570\u83b7\u53d6\u5f53\u524d\u7cfb\u7edf\u65e5\u671f<\/h3>\n<p>\u5728Oracle\u4e2d\uff0cSYSDATE\u51fd\u6570\u7528\u4e8e\u83b7\u53d6\u5f53\u524d\u7cfb\u7edf\u65e5\u671f\u548c\u65f6\u95f4\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528SYSDATE\u51fd\u6570\u6765\u67e5\u770b\u5f53\u524d\u7cfb\u7edf\u65e5\u671f\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre>SELECT SYSDATE FROM DUAL;<\/pre>\n<p>\u8be5\u67e5\u8be2\u5c06\u8fd4\u56de\u5f53\u524d\u7cfb\u7edf\u65e5\u671f\u548c\u65f6\u95f4\u3002\u4f46\u6709\u65f6\u5019\uff0c\u6211\u4eec\u9700\u8981\u4fee\u6539\u7cfb\u7edf\u65e5\u671f\u6765\u6a21\u62df\u7279\u5b9a\u60c5\u51b5\uff0c\u63a5\u4e0b\u6765\u5c06\u4ecb\u7ecd\u5982\u4f55\u5b9e\u73b0\u8fd9\u4e00\u64cd\u4f5c\u3002<\/p>\n<h3>2. \u4fee\u6539\u7cfb\u7edf\u65e5\u671f\u7684\u65b9\u6cd5<\/h3>\n<h4>2.1 \u4f7f\u7528ALTER SESSION\u8bed\u53e5<\/h4>\n<p>\u901a\u8fc7ALTER SESSION\u8bed\u53e5\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u4f1a\u8bdd\u7ea7\u522b\u4fee\u6539\u7cfb\u7edf\u65e5\u671f\u3002\u4f8b\u5982\uff0c\u5047\u8bbe\u6211\u4eec\u60f3\u5c06\u7cfb\u7edf\u65e5\u671f\u8c03\u6574\u4e3a2023\u5e741\u67081\u65e5\uff0c\u6211\u4eec\u53ef\u4ee5\u6267\u884c\u4ee5\u4e0bSQL\u8bed\u53e5\uff1a<\/p>\n<pre>ALTER SESSION SET NLS_DATE_FORMAT = 'YYYY-MM-DD';\nALTER SESSION SET NLS_DATE_FORMAT = '2023-01-01';<\/pre>\n<p>\u8fd9\u6837\uff0c\u5728\u5f53\u524d\u4f1a\u8bdd\u4e2d\uff0c\u7cfb\u7edf\u65e5\u671f\u4f1a\u88ab\u8c03\u6574\u4e3a\u6307\u5b9a\u65e5\u671f\u3002\u8fd9\u5bf9\u4e8e\u8c03\u8bd5\u548c\u6d4b\u8bd5\u975e\u5e38\u6709\u7528\u3002<\/p>\n<h4>2.2 \u4f7f\u7528DBMS_SCHEDULER\u5305<\/h4>\n<p>\u53e6\u4e00\u79cd\u8c03\u6574\u7cfb\u7edf\u65e5\u671f\u7684\u65b9\u6cd5\u662f\u4f7f\u7528Oracle\u7684DBMS_SCHEDULER\u5305\u3002\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u5b9a\u65f6\u4efb\u52a1\uff0c\u901a\u8fc7\u8be5\u5b9a\u65f6\u4efb\u52a1\u6765\u4fee\u6539\u7cfb\u7edf\u65e5\u671f\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\uff1a<\/p>\n<pre>BEGIN\n    DBMS_SCHEDULER.create_schedule(\n        schedule_name =&gt; 'SET_SYSTEM_DATE',\n        start_date =&gt; SYSTIMESTAMP,\n        repeat_interval =&gt; 'FREQ=MINUTELY; INTERVAL=1',\n        end_date =&gt; SYSTIMESTAMP + INTERVAL '1' HOUR\n    );\n\n    DBMS_SCHEDULER.create_job(\n        job_name =&gt; 'CHANGE_SYSTEM_DATE',\n        job_type =&gt; 'PLSQL_BLOCK',\n        job_action =&gt; 'BEGIN EXECUTE IMMEDIATE ''ALTER SESSION SET NLS_DATE_FORMAT = ''''YYYY-MM-DD''''''; END;',\n        schedule_name =&gt; 'SET_SYSTEM_DATE'\n    );\n\n    DBMS_SCHEDULER.enable('CHANGE_SYSTEM_DATE');\nEND;\n\/<\/pre>\n<p>\u6b64\u4ee3\u7801\u7247\u6bb5\u4e2d\u521b\u5efa\u4e86\u4e00\u4e2a\u5b9a\u65f6\u4efb\u52a1\uff0c\u6bcf\u5206\u949f\u8c03\u6574\u7cfb\u7edf\u65e5\u671f\u4e3a\u5f53\u5929\u65e5\u671f\u3002\u53ef\u4ee5\u6839\u636e\u5b9e\u9645\u9700\u6c42\u4fee\u6539\u91cd\u590d\u95f4\u9694\u548c\u7ed3\u675f\u65e5\u671f\u3002<\/p>\n<h3>3. \u6062\u590d\u7cfb\u7edf\u65e5\u671f<\/h3>\n<p>\u5728\u5b8c\u6210\u8c03\u8bd5\u548c\u6d4b\u8bd5\u540e\uff0c\u52a1\u5fc5\u8bb0\u5f97\u6062\u590d\u7cfb\u7edf\u65e5\u671f\u4e3a\u5b9e\u9645\u65e5\u671f\u3002\u53ef\u4ee5\u6267\u884c\u4ee5\u4e0bSQL\u8bed\u53e5\u6765\u6062\u590d\u7cfb\u7edf\u65e5\u671f\uff1a<\/p>\n<pre>ALTER SESSION SET NLS_DATE_FORMAT = ''; -- \u6062\u590d\u9ed8\u8ba4\u65e5\u671f\u683c\u5f0f<\/pre>\n<h3>\u7ed3\u8bed<\/h3>\n<p>\u672c\u6587\u5206\u4eab\u4e86\u5728Oracle\u6570\u636e\u5e93\u4e2d\u8c03\u6574\u7cfb\u7edf\u65e5\u671f\u7684\u5b9e\u7528\u6280\u5de7\uff0c\u5305\u62ec\u901a\u8fc7ALTER SESSION\u8bed\u53e5\u548c\u4f7f\u7528DBMS_SCHEDULER\u5305\u6765\u4fee\u6539\u7cfb\u7edf\u65e5\u671f\u7684\u65b9\u6cd5\uff0c\u4ee5\u53ca\u6062\u590d\u7cfb\u7edf\u65e5\u671f\u7684\u6b65\u9aa4\u3002\u6b63\u786e\u5904\u7406\u7cfb\u7edf\u65e5\u671f\u5bf9\u4e8e\u6570\u636e\u5904\u7406\u548c\u5206\u6790\u81f3\u5173\u91cd\u8981\uff0c\u5e0c\u671b\u672c\u6587\u7684\u5185\u5bb9\u80fd\u591f\u5e2e\u52a9\u8bfb\u8005\u66f4\u597d\u5730\u7ba1\u7406\u7cfb\u7edf\u65e5\u671f\u3002<\/p>\n<p>\u4eca\u5929\u5173\u4e8e\u300a\u5b9e\u7528\u6280\u5de7\uff1a\u5728Oracle\u4e2d\u4fee\u6539\u7cfb\u7edf\u65e5\u671f\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\u4e8eOracle,\u65e5\u671f\u8c03\u6574,\u7cfb\u7edf\u65e5\u671f\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>\u5b9e\u7528\u6280\u5de7\uff1a\u5728Oracle\u4e2d\u4fee\u6539\u7cfb&#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-199903","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199903","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=199903"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199903\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=199903"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=199903"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=199903"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}