{"id":246,"date":"2012-03-02T04:29:07","date_gmt":"2012-03-02T04:29:07","guid":{"rendered":"http:\/\/oranotes.tuktaroff.com\/?page_id=246"},"modified":"2012-03-02T04:30:18","modified_gmt":"2012-03-02T04:30:18","slug":"index-fragmentation","status":"publish","type":"page","link":"http:\/\/oranotes.tuktaroff.com\/?page_id=246","title":{"rendered":"Index fragmentation"},"content":{"rendered":"<p><code><br \/>\n<script type=\"text\/javascript\"> \nfunction copy(what) {\n    window.clipboardData.setData('Text',what.value);\n}\nfunction paste(what) {\n    what.value = window.clipboardData.getData('Text');\n}\n<\/script><\/p>\n<form action=\"\"><textarea name=\"data\" cols=\"50\" rows=\"10\" style=\"display:none;\"><br \/>\nANALYZE INDEX &&index_name VALIDATE STRUCTURE; <\/p>\n<p>COL name         HEADING 'Index Name'          FORMAT a30<br \/>\nCOL del_lf_rows  HEADING 'Deleted|Leaf Rows'   FORMAT 99999999<br \/>\nCOL lf_rows_used HEADING 'Used|Leaf Rows'      FORMAT 99999999<br \/>\nCOL ibadness     HEADING '% Deleted|Leaf Rows' FORMAT 999.99999 <\/p>\n<p>SELECT<br \/>\n    name<br \/>\n  , del_lf_rows<br \/>\n  , lf_rows - del_lf_rows lf_rows_used<br \/>\n  , TO_CHAR( del_lf_rows \/(DECODE(lf_rows,0,0.01,lf_rows))*100,'999.99999') ibadness<br \/>\nFROM   index_stats<br \/>\n\/<\/p>\n<p>prompt<br \/>\nprompt Consider rebuilding any index if % of Deleted Leaf Rows is > 20%<br \/>\nprompt <\/p>\n<p>undefine index_name <\/p>\n<p><\/textarea><input type=\"button\" value=\"Clipboard\" onclick=\"copy(this.form.data)\"><\/form>\n<pre class=\"qcode\">\r\nANALYZE INDEX &&index_name VALIDATE STRUCTURE; \r\n \r\nCOL name         HEADING 'Index Name'          FORMAT a30 \r\nCOL del_lf_rows  HEADING 'Deleted|Leaf Rows'   FORMAT 99999999 \r\nCOL lf_rows_used HEADING 'Used|Leaf Rows'      FORMAT 99999999 \r\nCOL ibadness     HEADING '% Deleted|Leaf Rows' FORMAT 999.99999 \r\n \r\nSELECT\r\n    name\r\n  , del_lf_rows\r\n  , lf_rows - del_lf_rows lf_rows_used\r\n  , TO_CHAR( del_lf_rows \/(DECODE(lf_rows,0,0.01,lf_rows))*100,'999.99999') ibadness \r\nFROM   index_stats\r\n\/\r\n \r\nprompt \r\nprompt Consider rebuilding any index if % of Deleted Leaf Rows is > 20%\r\nprompt \r\n\r\nundefine index_name \r\n\r\n<\/pre>\n<p><\/code><\/p>\n","protected":false},"excerpt":{"rendered":"<p>ANALYZE INDEX &#038;&#038;index_name VALIDATE STRUCTURE; COL name HEADING &#8216;Index Name&#8217; FORMAT a30 COL del_lf_rows HEADING &#8216;Deleted|Leaf Rows&#8217; FORMAT 99999999 COL lf_rows_used HEADING &#8216;Used|Leaf Rows&#8217; FORMAT 99999999 COL ibadness HEADING &#8216;% Deleted|Leaf Rows&#8217; FORMAT 999.99999 SELECT name , del_lf_rows , lf_rows &#8211; del_lf_rows lf_rows_used , TO_CHAR( del_lf_rows \/(DECODE(lf_rows,0,0.01,lf_rows))*100,&#8217;999.99999&#8242;) ibadness FROM index_stats \/ prompt prompt Consider rebuilding [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":93,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-246","page","type-page","status-publish","hentry"],"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/P2NVny-3Y","_links":{"self":[{"href":"http:\/\/oranotes.tuktaroff.com\/index.php?rest_route=\/wp\/v2\/pages\/246","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/oranotes.tuktaroff.com\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"http:\/\/oranotes.tuktaroff.com\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"http:\/\/oranotes.tuktaroff.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/oranotes.tuktaroff.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=246"}],"version-history":[{"count":2,"href":"http:\/\/oranotes.tuktaroff.com\/index.php?rest_route=\/wp\/v2\/pages\/246\/revisions"}],"predecessor-version":[{"id":248,"href":"http:\/\/oranotes.tuktaroff.com\/index.php?rest_route=\/wp\/v2\/pages\/246\/revisions\/248"}],"up":[{"embeddable":true,"href":"http:\/\/oranotes.tuktaroff.com\/index.php?rest_route=\/wp\/v2\/pages\/93"}],"wp:attachment":[{"href":"http:\/\/oranotes.tuktaroff.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=246"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}