{"id":11583,"date":"2024-03-14T14:22:59","date_gmt":"2024-03-14T14:22:59","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/what-is-the-method-for-querying-oracle-tablespaces\/"},"modified":"2025-08-04T13:55:08","modified_gmt":"2025-08-04T13:55:08","slug":"what-is-the-method-for-querying-oracle-tablespaces","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/what-is-the-method-for-querying-oracle-tablespaces\/","title":{"rendered":"Oracle Tablespace Query: Check Space Usage"},"content":{"rendered":"<p>To check the information of table spaces in Oracle database, you can use the following query:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">SELECT<\/span> tablespace_name, file_name, bytes<span class=\"hljs-operator\">\/<\/span><span class=\"hljs-number\">1024<\/span><span class=\"hljs-operator\">\/<\/span><span class=\"hljs-number\">1024<\/span> <span class=\"hljs-keyword\">AS<\/span> \"Size (MB)\", \r\nbytes<span class=\"hljs-operator\">\/<\/span><span class=\"hljs-number\">1024<\/span><span class=\"hljs-operator\">\/<\/span><span class=\"hljs-number\">1024<\/span> <span class=\"hljs-operator\">-<\/span> (<span class=\"hljs-built_in\">sum<\/span>(nvl(bytes,<span class=\"hljs-number\">0<\/span>))<span class=\"hljs-operator\">\/<\/span><span class=\"hljs-number\">1024<\/span><span class=\"hljs-operator\">\/<\/span><span class=\"hljs-number\">1024<\/span>) <span class=\"hljs-keyword\">as<\/span> \"Used (MB)\", \r\n(<span class=\"hljs-built_in\">sum<\/span>(nvl(bytes,<span class=\"hljs-number\">0<\/span>))<span class=\"hljs-operator\">\/<\/span><span class=\"hljs-number\">1024<\/span><span class=\"hljs-operator\">\/<\/span><span class=\"hljs-number\">1024<\/span>) <span class=\"hljs-keyword\">as<\/span> \"Free (MB)\", \r\nround(<span class=\"hljs-built_in\">sum<\/span>(nvl(bytes,<span class=\"hljs-number\">0<\/span>))<span class=\"hljs-operator\">*<\/span><span class=\"hljs-number\">100<\/span><span class=\"hljs-operator\">\/<\/span><span class=\"hljs-built_in\">sum<\/span>(<span class=\"hljs-built_in\">sum<\/span>(nvl(bytes,<span class=\"hljs-number\">0<\/span>))) <span class=\"hljs-keyword\">over<\/span>(),<span class=\"hljs-number\">2<\/span>) <span class=\"hljs-keyword\">as<\/span> \"Used %\"\r\n<span class=\"hljs-keyword\">FROM<\/span> dba_data_files\r\n<span class=\"hljs-keyword\">GROUP<\/span> <span class=\"hljs-keyword\">BY<\/span> tablespace_name, file_name, bytes\r\n<span class=\"hljs-keyword\">ORDER<\/span> <span class=\"hljs-keyword\">BY<\/span> tablespace_name;\r\n<\/code><\/pre>\n<p>This query will display the name of each tablespace, file name, size in MB, used space in MB, remaining space in MB, and percentage of space used.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>To check the information of table spaces in Oracle database, you can use the following query: SELECT tablespace_name, file_name, bytes\/1024\/1024 AS &#8220;Size (MB)&#8221;, bytes\/1024\/1024 &#8211; (sum(nvl(bytes,0))\/1024\/1024) as &#8220;Used (MB)&#8221;, (sum(nvl(bytes,0))\/1024\/1024) as &#8220;Free (MB)&#8221;, round(sum(nvl(bytes,0))*100\/sum(sum(nvl(bytes,0))) over(),2) as &#8220;Used %&#8221; FROM dba_data_files GROUP BY tablespace_name, file_name, bytes ORDER BY tablespace_name; This query will display the name of [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[284,282,13443,1034,3165],"class_list":["post-11583","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-database","tag-oracle","tag-space-management","tag-sql-query","tag-tablespace"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Oracle Tablespace Query: Check Space Usage - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Get Oracle tablespace details with this SQL query. 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