{"id":1077,"date":"2017-03-10T13:01:28","date_gmt":"2017-03-10T07:31:28","guid":{"rendered":"http:\/\/pramodsingla.com\/?p=1077"},"modified":"2017-03-10T13:01:28","modified_gmt":"2017-03-10T07:31:28","slug":"sql-server-tuning-de-fragment-indexes","status":"publish","type":"post","link":"https:\/\/pramodsingla.com\/?p=1077","title":{"rendered":"SQL Server Tuning – De-fragment Indexes"},"content":{"rendered":"

Problem Statement: <\/strong>Script to\u00a0generate the scripts used to de-fragment indexes.<\/h2>\n

Solution:<\/strong>\u00a0Use this script<\/a>\u00a0to find the fragmented indexes and following script can be used to de-fragment them.<\/h2>\n

SELECT<\/span>\u00a0‘Alter\u00a0index\u00a0‘<\/span>\u00a0+<\/span>\u00a0i<\/span>.<\/span>NAME<\/span>\u00a0+<\/span>\u00a0‘\u00a0on\u00a0‘<\/span>
\n+<\/span>\u00a0Quotename<\/i><\/span>(<\/span>s<\/span>.<\/span>NAME<\/span>)<\/span>\u00a0+<\/span>\u00a0‘.’<\/span>\u00a0+<\/span>\u00a0Quotename<\/i><\/span>(<\/span>o<\/span>.<\/span>NAME<\/span>)<\/span>\u00a0+<\/span>\u00a0CASE<\/span>\u00a0WHEN<\/span>
\nstats<\/span>.<\/span>avg_fragmentation_in_percent<\/span>\u00a0>=<\/span>60<\/span>\u00a0THEN<\/span>\u00a0‘\u00a0rebuild\u00a0‘<\/span>\u00a0ELSE<\/span>
\n‘\u00a0reorganize’<\/span>\u00a0END<\/span>
\nFROM<\/span>\u00a0\u00a0\u00a0sys<\/span>.<\/span>dm_db_index_physical_stats<\/b><\/span>(<\/span>Db_id<\/i><\/span>(<\/span>)<\/span>,<\/span>\u00a0NULL<\/span>,<\/span>\u00a0NULL<\/span>,<\/span>\u00a0NULL<\/span>,<\/span>\u00a0‘LIMITED’<\/span>)<\/span>\u00a0AS<\/span>
\nstats<\/span>,<\/span>
\nsys<\/span>.<\/span>objects<\/span>\u00a0AS<\/span>\u00a0o<\/span>,<\/span>
\nsys<\/span>.<\/span>schemas<\/span>\u00a0AS<\/span>\u00a0s<\/span>,<\/span>
\nsys<\/span>.<\/span>indexes<\/span>\u00a0AS<\/span>\u00a0i<\/span>
\nWHERE<\/span>\u00a0\u00a0o<\/span>.<\/span>OBJECT_ID<\/span>\u00a0=<\/span>\u00a0stats<\/span>.<\/span>OBJECT_ID<\/span>
\nAND<\/span>\u00a0s<\/span>.<\/span>schema_id<\/span>\u00a0=<\/span>\u00a0o<\/span>.<\/span>schema_id<\/span>
\nAND<\/span>\u00a0i<\/span>.<\/span>OBJECT_ID<\/span>\u00a0=<\/span>\u00a0stats<\/span>.<\/span>OBJECT_ID<\/span>
\nAND<\/span>\u00a0i<\/span>.<\/span>index_id<\/span>\u00a0=<\/span>\u00a0stats<\/span>.<\/span>index_id<\/span>
\nAND<\/span>\u00a0stats<\/span>.<\/span>avg_fragmentation_in_percent<\/span>\u00a0>=<\/span>\u00a020<\/span>
\nAND<\/span>\u00a0stats<\/span>.<\/span>page_count<\/span>\u00a0>=<\/span>\u00a01000<\/span>
\nORDER<\/span>\u00a0\u00a0BY<\/span>\u00a0stats<\/span>.<\/span>avg_fragmentation_in_percent<\/span>\u00a0DESC<\/span>,<\/span>
\nstats<\/span>.<\/span>page_count<\/span>\u00a0DESC<\/span><\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"

Problem Statement: Script to\u00a0generate the scripts used to de-fragment indexes. Solution:\u00a0Use this script\u00a0to find the fragmented indexes and following script[…]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_mi_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0},"categories":[23,29],"tags":[73,75],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/pramodsingla.com\/index.php?rest_route=\/wp\/v2\/posts\/1077"}],"collection":[{"href":"https:\/\/pramodsingla.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/pramodsingla.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/pramodsingla.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/pramodsingla.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1077"}],"version-history":[{"count":0,"href":"https:\/\/pramodsingla.com\/index.php?rest_route=\/wp\/v2\/posts\/1077\/revisions"}],"wp:attachment":[{"href":"https:\/\/pramodsingla.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1077"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pramodsingla.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1077"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pramodsingla.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1077"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}