{"id":24634,"date":"2024-03-16T03:30:22","date_gmt":"2024-03-16T03:30:22","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-can-i-view-index-usage-in-db2\/"},"modified":"2024-03-22T04:13:00","modified_gmt":"2024-03-22T04:13:00","slug":"how-can-i-view-index-usage-in-db2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-can-i-view-index-usage-in-db2\/","title":{"rendered":"How can I view index usage in DB2?"},"content":{"rendered":"<p>To view the usage of indexes in DB2, you can use the following method: 1. Use the EXPLAIN tool: Using the EXPLAIN tool can provide you with the query plan, which includes information on the usage of indexes. You can use the following command to get the query plan:<\/p>\n<pre class=\"post-pre\">&nbsp;&nbsp;EXPLAIN&nbsp;PLAN&nbsp;FOR&nbsp;[\u67e5\u8be2\u8bed\u53e5];<\/pre>\n<p>You can then use the following statement to view the query plan:<\/p>\n<pre class=\"post-pre\">&nbsp;&nbsp;SELECT&nbsp;*&nbsp;FROM&nbsp;TABLE(EXPLAIN(NULL,&nbsp;NULL,&nbsp;NULL,&nbsp;-1));<\/pre>\n<p>You can view the usage of indexes within the query plan. Using the SYSIBM.SYSINDEXES table, you can obtain statistical information about indexes, such as the number of times they have been used and scanned. Use the following statement to query:<\/p>\n<pre class=\"post-pre\">&nbsp;&nbsp;SELECT&nbsp;*&nbsp;FROM&nbsp;SYSIBM.SYSINDEXES&nbsp;WHERE&nbsp;TBNAME&nbsp;=&nbsp;'[\u8868\u540d]';<\/pre>\n<p>Replace [table name] with the specific table name. Use tablespace statistics: You can query tablespace statistics to get information on index usage. You can use the following statement to query tablespace statistics.<\/p>\n<pre class=\"post-pre\">&nbsp;&nbsp;SELECT&nbsp;*&nbsp;FROM&nbsp;SYSIBMADM.SNAPDB;<\/pre>\n<p>In the query results, you can view information such as the number of scans and updates performed on an index. These methods can help you monitor the usage of indexes in DB2. Please choose one method as needed to check the usage of indexes.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>To view the usage of indexes in DB2, you can use the following method: 1. Use the EXPLAIN tool: Using the EXPLAIN tool can provide you with the query plan, which includes information on the usage of indexes. You can use the following command to get the query plan: &nbsp;&nbsp;EXPLAIN&nbsp;PLAN&nbsp;FOR&nbsp;[\u67e5\u8be2\u8bed\u53e5]; You can then use the [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-24634","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"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>How can I view index usage in DB2? - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/blog\/how-can-i-view-index-usage-in-db2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How can I view index usage in DB2?\" \/>\n<meta property=\"og:description\" content=\"To view the usage of indexes in DB2, you can use the following method: 1. 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