{"id":3930,"date":"2023-07-17T07:00:00","date_gmt":"2023-07-17T04:00:00","guid":{"rendered":"https:\/\/www.dataplatform.gr\/?p=3930"},"modified":"2024-01-08T02:37:15","modified_gmt":"2024-01-07T23:37:15","slug":"pos-mporoyme-na-vroyme-pote-chrisimopo","status":"publish","type":"post","link":"https:\/\/www.dataplatform.gr\/en\/pos-mporoyme-na-vroyme-pote-chrisimopo-2\/","title":{"rendered":"How can we find when a database was last used in SQL Server"},"content":{"rendered":"<p>In the article we will see an easy and quick way to see which databases are in use and which users are currently connected to them. <\/p>\n\n\n\n<p>To see when a database was last accessed in SQL Server, we should see when its most recently accessed index was accessed. <\/p>\n\n\n\n<p>The query to find this information is the following:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"sql\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\" data-no-translation=\"\" data-no-auto-translation=\"\">SELECT d.name as DBname,\nlast_user_seek = MAX(last_user_seek),\nlast_user_scan = MAX(last_user_scan),\nlast_user_lookup = MAX(last_user_lookup),\nlast_user_update = MAX(last_user_update)\nFROM sys.databases AS d\nLEFT JOIN  sys.dm_db_index_usage_stats AS i ON i.database_id=d.database_id\nWHERE d.database_id not in (1,2,3,4)\nGROUP BY d.name;<\/pre>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"669\" height=\"169\" src=\"https:\/\/www.dataplatform.gr\/wp-content\/uploads\/2021\/10\/dbu-01.png\" alt=\"\" class=\"wp-image-3932\" srcset=\"https:\/\/www.dataplatform.gr\/wp-content\/uploads\/2021\/10\/dbu-01.png 669w, https:\/\/www.dataplatform.gr\/wp-content\/uploads\/2021\/10\/dbu-01-300x76.png 300w\" sizes=\"auto, (max-width: 669px) 100vw, 669px\" \/><figcaption class=\"wp-element-caption\">01<\/figcaption><\/figure>\n\n\n\n<p>Depending on the column we can also understand whether it was simply read (seek, scan, lookup) or updated (update). If all the columns <em><strong>NULL<\/strong><\/em> means that the database has not been accessed since the instance was last restarted.<\/p>\n\n\n\n<p><em>*In the above we should pay special attention as every time the instance of SQL Server is restarted all values become NULL as the information is deleted<\/em><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Bonus how to see which users are currently active<\/h3>\n\n\n\n<p>To see which users are currently active in the databases along with the name of the computer and the name of the program they are using, we run the following query:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"sql\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\" data-no-translation=\"\" data-no-auto-translation=\"\">select DB_NAME(dbid) as DBname,count(dbid) as Connections,loginame,program_name,hostname\nfrom sys.sysprocesses\nwhere dbid > 4\n--and loginame not like 'NT Service%'\n--and loginame != 'sa'\ngroup by dbid,loginame,program_name,hostname\norder by dbid,loginame;<\/pre>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"745\" height=\"135\" src=\"https:\/\/www.dataplatform.gr\/wp-content\/uploads\/2021\/10\/dbu-02.png\" alt=\"\" class=\"wp-image-3929\" srcset=\"https:\/\/www.dataplatform.gr\/wp-content\/uploads\/2021\/10\/dbu-02.png 745w, https:\/\/www.dataplatform.gr\/wp-content\/uploads\/2021\/10\/dbu-02-300x54.png 300w\" sizes=\"auto, (max-width: 745px) 100vw, 745px\" \/><figcaption class=\"wp-element-caption\">02<\/figcaption><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>In the article we will see an easy and quick way to see which databases are in use and which users are currently connected to them. To see when a database was last accessed in SQL Server, we should see when its most recently accessed index was accessed. The query [\u2026]<\/p>","protected":false},"author":1,"featured_media":702,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11,15],"tags":[29,23,30,6],"class_list":["post-3930","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-databases","category-ms-sqlserver","tag-databases","tag-microsoft","tag-rdbms","tag-sqlserver"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u03a0\u03ce\u03c2 \u03bc\u03c0\u03bf\u03c1\u03bf\u03cd\u03bc\u03b5 \u03bd\u03b1 \u03b2\u03c1\u03bf\u03cd\u03bc\u03b5 \u03c0\u03cc\u03c4\u03b5 \u03c7\u03c1\u03b7\u03c3\u03b9\u03bc\u03bf\u03c0\u03bf\u03b9\u03ae\u03b8\u03b7\u03ba\u03b5 \u03c4\u03b5\u03bb\u03b5\u03c5\u03c4\u03b1\u03af\u03b1 \u03c6\u03bf\u03c1\u03ac \u03bc\u03af\u03b1 \u03b2\u03ac\u03c3\u03b7 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