{"id":158891,"date":"2024-11-03T05:49:45","date_gmt":"2024-11-02T21:49:45","guid":{"rendered":"https:\/\/server.hk\/cnblog\/158891\/"},"modified":"2024-11-03T05:49:46","modified_gmt":"2024-11-02T21:49:46","slug":"%e7%ae%a1%e7%90%86%e6%8a%80%e5%b7%a7-oracle-%e6%95%b8%e6%93%9a%e5%ba%ab%e7%a9%ba%e9%96%93","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/158891\/","title":{"rendered":"\u7ba1\u7406\u6280\u5de7 (oracle \u6578\u64da\u5eab\u7a7a\u9593)"},"content":{"rendered":"<h1 id=\"%e7%ae%a1%e7%90%86%e6%8a%80%e5%b7%a7-oracle-%e6%95%b8%e6%93%9a%e5%ba%ab%e7%a9%ba%e9%96%93-cVOUUFLCqt\">\u7ba1\u7406\u6280\u5de7 (Oracle \u6578\u64da\u5eab\u7a7a\u9593)<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u7ba1\u7406\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u91cd\u8981\u3002Oracle \u6578\u64da\u5eab\u4f5c\u70ba\u4e00\u500b\u5f37\u5927\u7684\u6578\u64da\u7ba1\u7406\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u5de5\u5177\u548c\u529f\u80fd\u4f86\u5e6b\u52a9\u7528\u6236\u6709\u6548\u5730\u7ba1\u7406\u6578\u64da\u5eab\u7a7a\u9593\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u4e00\u4e9b\u95dc\u9375\u7684\u7ba1\u7406\u6280\u5de7\uff0c\u4ee5\u78ba\u4fdd Oracle \u6578\u64da\u5eab\u7684\u7a7a\u9593\u4f7f\u7528\u6548\u7387\u548c\u6027\u80fd\u6700\u4f73\u5316\u3002<\/p>\n<h2 id=\"1-%e7%90%86%e8%a7%a3%e6%95%b8%e6%93%9a%e5%ba%ab%e7%a9%ba%e9%96%93%e7%b5%90%e6%a7%8b-cVOUUFLCqt\">1. \u7406\u89e3\u6578\u64da\u5eab\u7a7a\u9593\u7d50\u69cb<\/h2>\n<p>\u5728\u958b\u59cb\u7ba1\u7406 Oracle \u6578\u64da\u5eab\u7684\u7a7a\u9593\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u4e86\u89e3\u5176\u57fa\u672c\u7d50\u69cb\u3002Oracle \u6578\u64da\u5eab\u7684\u7a7a\u9593\u4e3b\u8981\u7531\u4ee5\u4e0b\u5e7e\u500b\u90e8\u5206\u7d44\u6210\uff1a<\/p>\n<ul>\n<li><strong>\u8868\u7a7a\u9593 (Tablespace)<\/strong>\uff1a\u7528\u65bc\u5b58\u5132\u6578\u64da\u6587\u4ef6\u7684\u908f\u8f2f\u7d50\u69cb\u3002<\/li>\n<li><strong>\u6578\u64da\u6587\u4ef6 (Data File)<\/strong>\uff1a\u5be6\u969b\u5b58\u5132\u6578\u64da\u7684\u7269\u7406\u6587\u4ef6\u3002<\/li>\n<li><strong>\u6bb5 (Segment)<\/strong>\uff1a\u7531\u4e00\u7d44\u6578\u64da\u584a\u7d44\u6210\uff0c\u901a\u5e38\u5c0d\u61c9\u65bc\u4e00\u500b\u8868\u6216\u7d22\u5f15\u3002<\/li>\n<li><strong>\u5340\u584a (Block)<\/strong>\uff1a\u6578\u64da\u5eab\u7684\u6700\u5c0f\u5b58\u5132\u55ae\u4f4d\u3002<\/li>\n<\/ul>\n<p>\u4e86\u89e3\u9019\u4e9b\u7d50\u69cb\u6709\u52a9\u65bc\u66f4\u597d\u5730\u7ba1\u7406\u548c\u512a\u5316\u6578\u64da\u5eab\u7a7a\u9593\u3002<\/p>\n<h2 id=\"2-%e7%9b%a3%e6%8e%a7%e7%a9%ba%e9%96%93%e4%bd%bf%e7%94%a8%e6%83%85%e6%b3%81-cVOUUFLCqt\">2. \u76e3\u63a7\u7a7a\u9593\u4f7f\u7528\u60c5\u6cc1<\/h2>\n<p>\u5b9a\u671f\u76e3\u63a7\u6578\u64da\u5eab\u7684\u7a7a\u9593\u4f7f\u7528\u60c5\u6cc1\u662f\u7ba1\u7406\u7684\u95dc\u9375\u3002Oracle \u63d0\u4f9b\u4e86\u591a\u7a2e\u8996\u5716\u4f86\u5e6b\u52a9\u7528\u6236\u6aa2\u67e5\u7a7a\u9593\u4f7f\u7528\u60c5\u6cc1\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre><code>SELECT tablespace_name, SUM(bytes) \/ 1024 \/ 1024 AS size_mb\nFROM dba_data_files\nGROUP BY tablespace_name;<\/code><\/pre>\n<p>\u9019\u6bb5 SQL \u67e5\u8a62\u5c07\u986f\u793a\u6bcf\u500b\u8868\u7a7a\u9593\u7684\u5927\u5c0f\u3002\u901a\u904e\u9019\u4e9b\u6578\u64da\uff0c\u7528\u6236\u53ef\u4ee5\u8b58\u5225\u51fa\u54ea\u4e9b\u8868\u7a7a\u9593\u63a5\u8fd1\u6eff\u8f09\uff0c\u4e26\u53ca\u6642\u63a1\u53d6\u63aa\u65bd\u3002<\/p>\n<h2 id=\"3-%e8%87%aa%e5%8b%95%e6%93%b4%e5%b1%95%e6%95%b8%e6%93%9a%e6%96%87%e4%bb%b6-cVOUUFLCqt\">3. \u81ea\u52d5\u64f4\u5c55\u6578\u64da\u6587\u4ef6<\/h2>\n<p>\u70ba\u4e86\u907f\u514d\u56e0\u7a7a\u9593\u4e0d\u8db3\u800c\u5c0e\u81f4\u7684\u6578\u64da\u5eab\u6027\u80fd\u554f\u984c\uff0c\u53ef\u4ee5\u8003\u616e\u8a2d\u7f6e\u6578\u64da\u6587\u4ef6\u7684\u81ea\u52d5\u64f4\u5c55\u529f\u80fd\u3002\u9019\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0b SQL \u8a9e\u53e5\u4f86\u5be6\u73fe\uff1a<\/p>\n<pre><code>ALTER DATABASE DATAFILE 'your_datafile.dbf' AUTOEXTEND ON NEXT 10M MAXSIZE UNLIMITED;<\/code><\/pre>\n<p>\u9019\u6a23\u8a2d\u7f6e\u5f8c\uff0c\u7576\u6578\u64da\u6587\u4ef6\u7a7a\u9593\u4e0d\u8db3\u6642\uff0cOracle \u5c07\u81ea\u52d5\u64f4\u5c55\u6578\u64da\u6587\u4ef6\uff0c\u5f9e\u800c\u6e1b\u5c11\u624b\u52d5\u5e72\u9810\u7684\u9700\u8981\u3002<\/p>\n<h2 id=\"4-%e5%ae%9a%e6%9c%9f%e6%b8%85%e7%90%86%e4%b8%8d%e5%bf%85%e8%a6%81%e7%9a%84%e6%95%b8%e6%93%9a-cVOUUFLCqt\">4. \u5b9a\u671f\u6e05\u7406\u4e0d\u5fc5\u8981\u7684\u6578\u64da<\/h2>\n<p>\u96a8\u8457\u6642\u9593\u7684\u63a8\u79fb\uff0c\u6578\u64da\u5eab\u4e2d\u53ef\u80fd\u6703\u7a4d\u7d2f\u5927\u91cf\u4e0d\u5fc5\u8981\u7684\u6578\u64da\u3002\u5b9a\u671f\u6e05\u7406\u9019\u4e9b\u6578\u64da\u53ef\u4ee5\u91cb\u653e\u7a7a\u9593\u4e26\u63d0\u9ad8\u6027\u80fd\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u8a9e\u53e5\u4f86\u522a\u9664\u904e\u671f\u7684\u6578\u64da\uff1a<\/p>\n<pre><code>DELETE FROM your_table WHERE created_at &lt; SYSDATE - 365;<\/code><\/pre>\n<p>\u9019\u6bb5\u8a9e\u53e5\u5c07\u522a\u9664\u4e00\u5e74\u524d\u5275\u5efa\u7684\u6578\u64da\u3002\u6839\u64da\u696d\u52d9\u9700\u6c42\uff0c\u5b9a\u671f\u57f7\u884c\u9019\u985e\u6e05\u7406\u64cd\u4f5c\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002<\/p>\n<h2 id=\"5-%e4%bd%bf%e7%94%a8%e5%a3%93%e7%b8%ae%e6%8a%80%e8%a1%93-cVOUUFLCqt\">5. \u4f7f\u7528\u58d3\u7e2e\u6280\u8853<\/h2>\n<p>Oracle \u6578\u64da\u5eab\u63d0\u4f9b\u4e86\u591a\u7a2e\u58d3\u7e2e\u6280\u8853\uff0c\u53ef\u4ee5\u6709\u6548\u6e1b\u5c11\u6578\u64da\u4f54\u7528\u7684\u7a7a\u9593\u3002\u4f8b\u5982\uff0c\u4f7f\u7528\u8868\u58d3\u7e2e\u53ef\u4ee5\u5728\u63d2\u5165\u6578\u64da\u6642\u81ea\u52d5\u58d3\u7e2e\u6578\u64da\uff1a<\/p>\n<pre><code>ALTER TABLE your_table ENABLE ROW MOVEMENT;\nALTER TABLE your_table COMPRESS FOR QUERY LOW;<\/code><\/pre>\n<p>\u9019\u6a23\u53ef\u4ee5\u5728\u67e5\u8a62\u6642\u63d0\u9ad8\u6027\u80fd\uff0c\u540c\u6642\u6e1b\u5c11\u5b58\u5132\u9700\u6c42\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-cVOUUFLCqt\">\u7e3d\u7d50<\/h2>\n<p>\u6709\u6548\u7684 Oracle \u6578\u64da\u5eab\u7a7a\u9593\u7ba1\u7406\u662f\u78ba\u4fdd\u6578\u64da\u5eab\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u7684\u95dc\u9375\u3002\u901a\u904e\u7406\u89e3\u6578\u64da\u5eab\u7d50\u69cb\u3001\u76e3\u63a7\u7a7a\u9593\u4f7f\u7528\u3001\u8a2d\u7f6e\u81ea\u52d5\u64f4\u5c55\u3001\u5b9a\u671f\u6e05\u7406\u6578\u64da\u4ee5\u53ca\u4f7f\u7528\u58d3\u7e2e\u6280\u8853\uff0c\u7ba1\u7406\u54e1\u53ef\u4ee5\u66f4\u597d\u5730\u7ba1\u7406\u6578\u64da\u5eab\u7a7a\u9593\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u5eab\u7ba1\u7406\u7684\u4f01\u696d\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4e5f\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u985e\u578b\u7684 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a>\uff0c\u90fd\u80fd\u70ba\u6578\u64da\u5eab\u63d0\u4f9b\u7a69\u5b9a\u7684\u904b\u884c\u74b0\u5883\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u638c\u63e1Oracle\u6578\u64da\u5eab\u7a7a\u9593\u7ba1\u7406\u6280\u5de7\uff0c\u63d0\u5347\u6578\u64da\u5b58\u5132\u6548\u7387\uff0c\u512a\u5316\u6027\u80fd\uff0c\u78ba\u4fdd\u7cfb\u7d71\u7a69\u5b9a\u904b\u884c\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-158891","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/158891","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=158891"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/158891\/revisions"}],"predecessor-version":[{"id":158892,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/158891\/revisions\/158892"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=158891"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=158891"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=158891"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}