{"id":1465,"date":"2018-02-02T11:23:29","date_gmt":"2018-02-02T03:23:29","guid":{"rendered":"http:\/\/www.821121.com\/?p=1465"},"modified":"2021-03-02T11:24:33","modified_gmt":"2021-03-02T03:24:33","slug":"redo-log-switches-per-hour","status":"publish","type":"post","link":"http:\/\/www.821121.com\/?p=1465","title":{"rendered":"Redo Log Switches Per Hour"},"content":{"rendered":"<pre><code class=\"language-sql\">SET PAGESIZE 60\nSET LINESIZE 300\n\nSELECT to_char(first_time, &#039;yyyy - mm - dd&#039;) aday,\n           to_char(first_time, &#039;hh24&#039;) hour,\n           count(*) total\nFROM   v$log_history\nWHERE  thread#=&amp;EnterThreadId\nGROUP BY to_char(first_time, &#039;yyyy - mm - dd&#039;),\n              to_char(first_time, &#039;hh24&#039;)\nORDER BY to_char(first_time, &#039;yyyy - mm - dd&#039;),\n              to_char(first_time, &#039;hh24&#039;) asc;<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>SET PAGESIZE 60 SET LINES<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18,48],"tags":[],"class_list":["post-1465","post","type-post","status-publish","format-standard","hentry","category-oracle-11g","category-sql"],"_links":{"self":[{"href":"http:\/\/www.821121.com\/index.php?rest_route=\/wp\/v2\/posts\/1465","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.821121.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.821121.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.821121.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.821121.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1465"}],"version-history":[{"count":1,"href":"http:\/\/www.821121.com\/index.php?rest_route=\/wp\/v2\/posts\/1465\/revisions"}],"predecessor-version":[{"id":1466,"href":"http:\/\/www.821121.com\/index.php?rest_route=\/wp\/v2\/posts\/1465\/revisions\/1466"}],"wp:attachment":[{"href":"http:\/\/www.821121.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1465"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.821121.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1465"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.821121.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1465"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}