{"id":95376,"date":"2024-10-20T00:32:18","date_gmt":"2024-10-19T16:32:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/95376\/"},"modified":"2024-10-20T00:32:19","modified_gmt":"2024-10-19T16:32:19","slug":"oracle%e4%bd%bf%e7%94%a8%e8%81%af%e6%a9%9f%e9%87%8d%e5%ae%9a%e7%be%a9%e4%be%86%e7%b5%a6%e8%a1%a8%e5%a2%9e%e5%8a%a0%e6%96%b0%e5%88%97%e8%88%87%e5%88%86%e5%8d%80","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/95376\/","title":{"rendered":"Oracle\u4f7f\u7528\u806f\u6a5f\u91cd\u5b9a\u7fa9\u4f86\u7d66\u8868\u589e\u52a0\u65b0\u5217\u8207\u5206\u5340"},"content":{"rendered":"<h1 id=\"oracle%e4%bd%bf%e7%94%a8%e8%81%af%e6%a9%9f%e9%87%8d%e5%ae%9a%e7%be%a9%e4%be%86%e7%b5%a6%e8%a1%a8%e5%a2%9e%e5%8a%a0%e6%96%b0%e5%88%97%e8%88%87%e5%88%86%e5%8d%80-QNCVKRedAg\">Oracle\u4f7f\u7528\u806f\u6a5f\u91cd\u5b9a\u7fa9\u4f86\u7d66\u8868\u589e\u52a0\u65b0\u5217\u8207\u5206\u5340<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u8868\u7684\u7d50\u69cb\u7d93\u5e38\u9700\u8981\u8abf\u6574\u4ee5\u6eff\u8db3\u696d\u52d9\u9700\u6c42\u3002Oracle\u6578\u64da\u5eab\u63d0\u4f9b\u4e86\u4e00\u7a2e\u5f37\u5927\u7684\u529f\u80fd\u2014\u2014\u806f\u6a5f\u91cd\u5b9a\u7fa9\uff08Online Redefinition\uff09\uff0c\u4f7f\u5f97\u7528\u6236\u53ef\u4ee5\u5728\u4e0d\u5f71\u97ff\u696d\u52d9\u904b\u884c\u7684\u60c5\u6cc1\u4e0b\uff0c\u5c0d\u8868\u9032\u884c\u7d50\u69cb\u4e0a\u7684\u4fee\u6539\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528\u806f\u6a5f\u91cd\u5b9a\u7fa9\u4f86\u7d66\u8868\u589e\u52a0\u65b0\u5217\u8207\u5206\u5340\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e8%81%af%e6%a9%9f%e9%87%8d%e5%ae%9a%e7%be%a9%ef%bc%9f-QNCVKRedAg\">\u4ec0\u9ebc\u662f\u806f\u6a5f\u91cd\u5b9a\u7fa9\uff1f<\/h2>\n<p>\u806f\u6a5f\u91cd\u5b9a\u7fa9\u662fOracle\u6578\u64da\u5eab\u7684\u4e00\u9805\u529f\u80fd\uff0c\u5141\u8a31\u7528\u6236\u5728\u8868\u7684\u6578\u64da\u4ecd\u7136\u53ef\u7528\u7684\u60c5\u6cc1\u4e0b\u9032\u884c\u7d50\u69cb\u4fee\u6539\u3002\u9019\u610f\u5473\u8457\u7528\u6236\u53ef\u4ee5\u5728\u4e0d\u9396\u5b9a\u8868\u7684\u60c5\u6cc1\u4e0b\uff0c\u9032\u884c\u5982\u6dfb\u52a0\u5217\u3001\u4fee\u6539\u5217\u985e\u578b\u3001\u589e\u52a0\u7d22\u5f15\u7b49\u64cd\u4f5c\u3002\u9019\u5c0d\u65bc\u9700\u8981\u9ad8\u53ef\u7528\u6027\u7684\u61c9\u7528\u7a0b\u5e8f\u4f86\u8aaa\u5c24\u70ba\u91cd\u8981\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e8%81%af%e6%a9%9f%e9%87%8d%e5%ae%9a%e7%be%a9%e5%a2%9e%e5%8a%a0%e6%96%b0%e5%88%97-QNCVKRedAg\">\u4f7f\u7528\u806f\u6a5f\u91cd\u5b9a\u7fa9\u589e\u52a0\u65b0\u5217<\/h2>\n<p>\u589e\u52a0\u65b0\u5217\u662f\u806f\u6a5f\u91cd\u5b9a\u7fa9\u7684\u4e00\u500b\u5e38\u898b\u61c9\u7528\u5834\u666f\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528\u806f\u6a5f\u91cd\u5b9a\u7fa9\u589e\u52a0\u65b0\u5217\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<pre><code>ALTER TABLE your_table_name\n  ADD (new_column_name data_type)\n  ENABLE ROW MOVEMENT;\n<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c<code>your_table_name<\/code>\u662f\u4f60\u8981\u4fee\u6539\u7684\u8868\u540d\uff0c<code>new_column_name<\/code>\u662f\u4f60\u8981\u6dfb\u52a0\u7684\u65b0\u5217\u540d\uff0c<code>data_type<\/code>\u662f\u65b0\u5217\u7684\u6578\u64da\u985e\u578b\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u6dfb\u52a0\u65b0\u5217\u6642\uff0c\u8a72\u5217\u7684\u9ed8\u8a8d\u503c\u5c07\u70baNULL\uff0c\u9664\u975e\u4f60\u5728\u8a9e\u53e5\u4e2d\u6307\u5b9a\u4e86\u9ed8\u8a8d\u503c\u3002<\/p>\n<h3 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a%e5%a2%9e%e5%8a%a0%e6%96%b0%e5%88%97-QNCVKRedAg\">\u793a\u4f8b\uff1a\u589e\u52a0\u65b0\u5217<\/h3>\n<pre><code>ALTER TABLE employees\n  ADD (birthdate DATE DEFAULT NULL)\n  ENABLE ROW MOVEMENT;\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u5411<code>employees<\/code>\u8868\u4e2d\u6dfb\u52a0\u4e86\u4e00\u500b\u540d\u70ba<code>birthdate<\/code>\u7684\u65b0\u5217\uff0c\u6578\u64da\u985e\u578b\u70ba\u65e5\u671f\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e8%81%af%e6%a9%9f%e9%87%8d%e5%ae%9a%e7%be%a9%e5%a2%9e%e5%8a%a0%e5%88%86%e5%8d%80-QNCVKRedAg\">\u4f7f\u7528\u806f\u6a5f\u91cd\u5b9a\u7fa9\u589e\u52a0\u5206\u5340<\/h2>\n<p>\u9664\u4e86\u589e\u52a0\u65b0\u5217\uff0c\u806f\u6a5f\u91cd\u5b9a\u7fa9\u9084\u53ef\u4ee5\u7528\u4f86\u5c0d\u8868\u9032\u884c\u5206\u5340\u3002\u5206\u5340\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u4e26\u4f7f\u6578\u64da\u7ba1\u7406\u66f4\u52a0\u9748\u6d3b\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528\u806f\u6a5f\u91cd\u5b9a\u7fa9\u589e\u52a0\u5206\u5340\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<pre><code>ALTER TABLE your_table_name\n  MODIFY PARTITION BY RANGE (partition_column)\n  (PARTITION new_partition_name VALUES LESS THAN (value));\n<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c<code>partition_column<\/code>\u662f\u7528\u65bc\u5206\u5340\u7684\u5217\u540d\uff0c<code>new_partition_name<\/code>\u662f\u65b0\u5206\u5340\u7684\u540d\u7a31\uff0c<code>value<\/code>\u662f\u8a72\u5206\u5340\u7684\u908a\u754c\u503c\u3002<\/p>\n<h3 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a%e5%a2%9e%e5%8a%a0%e5%88%86%e5%8d%80-QNCVKRedAg\">\u793a\u4f8b\uff1a\u589e\u52a0\u5206\u5340<\/h3>\n<pre><code>ALTER TABLE sales\n  MODIFY PARTITION BY RANGE (sale_date)\n  (PARTITION p2023 VALUES LESS THAN (TO_DATE('2024-01-01', 'YYYY-MM-DD')));\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u5c0d<code>sales<\/code>\u8868\u9032\u884c\u4e86\u5206\u5340\uff0c\u65b0\u589e\u4e86\u4e00\u500b\u540d\u70ba<code>p2023<\/code>\u7684\u5206\u5340\uff0c\u8a72\u5206\u5340\u5305\u542b\u6240\u6709\u57282023\u5e74\u4e4b\u524d\u7684\u92b7\u552e\u6578\u64da\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-QNCVKRedAg\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528\u806f\u6a5f\u91cd\u5b9a\u7fa9\u6642\uff0c\u6709\u5e7e\u9ede\u9700\u8981\u6ce8\u610f\uff1a<\/p>\n<ul>\n<li>\u78ba\u4fdd\u8868\u7684\u884c\u79fb\u52d5\u662f\u555f\u7528\u7684\uff0c\u9019\u6a23\u624d\u80fd\u9032\u884c\u7d50\u69cb\u4fee\u6539\u3002<\/li>\n<li>\u5728\u9032\u884c\u91cd\u5b9a\u7fa9\u4e4b\u524d\uff0c\u5efa\u8b70\u5148\u9032\u884c\u6578\u64da\u5099\u4efd\uff0c\u4ee5\u9632\u6b62\u610f\u5916\u60c5\u6cc1\u767c\u751f\u3002<\/li>\n<li>\u5728\u9ad8\u8ca0\u8f09\u7684\u74b0\u5883\u4e2d\uff0c\u61c9\u8b39\u614e\u4f7f\u7528\u806f\u6a5f\u91cd\u5b9a\u7fa9\uff0c\u56e0\u70ba\u9019\u53ef\u80fd\u6703\u5f71\u97ff\u6027\u80fd\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-QNCVKRedAg\">\u7e3d\u7d50<\/h2>\n<p>Oracle\u7684\u806f\u6a5f\u91cd\u5b9a\u7fa9\u529f\u80fd\u70ba\u6578\u64da\u5eab\u7ba1\u7406\u63d0\u4f9b\u4e86\u9748\u6d3b\u6027\u548c\u9ad8\u53ef\u7528\u6027\uff0c\u4f7f\u5f97\u7528\u6236\u53ef\u4ee5\u5728\u4e0d\u5f71\u97ff\u696d\u52d9\u904b\u884c\u7684\u60c5\u6cc1\u4e0b\u9032\u884c\u7d50\u69cb\u4fee\u6539\u3002\u7121\u8ad6\u662f\u589e\u52a0\u65b0\u5217\u9084\u662f\u5206\u5340\uff0c\u9019\u9805\u6280\u8853\u90fd\u80fd\u6709\u6548\u5730\u652f\u6301\u696d\u52d9\u9700\u6c42\u7684\u8b8a\u5316\u3002\u5c0d\u65bc\u9700\u8981\u7a69\u5b9a\u904b\u884c\u7684\u61c9\u7528\u7a0b\u5e8f\u4f86\u8aaa\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\u81f3\u95dc\u91cd\u8981\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u53ef\u9760\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u670d\u52d9\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\u4ee5\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u4f7f\u7528Oracle\u7684\u806f\u6a5f\u91cd\u5b9a\u7fa9\u529f\u80fd\uff0c\u70ba\u8868\u683c\u65b0\u589e\u5217\u8207\u5206\u5340\uff0c\u5be6\u73fe\u9ad8\u6548\u6578\u64da\u7ba1\u7406\u8207\u9748\u6d3b\u6027\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-95376","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95376","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=95376"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95376\/revisions"}],"predecessor-version":[{"id":95377,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95376\/revisions\/95377"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=95376"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=95376"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=95376"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}