{"id":8215,"date":"2019-01-19T10:32:10","date_gmt":"2019-01-19T10:32:10","guid":{"rendered":"https:\/\/dbtut.com\/?p=8215"},"modified":"2019-01-19T10:32:10","modified_gmt":"2019-01-19T10:32:10","slug":"ora-01567-error-during-redo-log-group-drop-operation","status":"publish","type":"post","link":"https:\/\/dbtut.com\/index.php\/2019\/01\/19\/ora-01567-error-during-redo-log-group-drop-operation\/","title":{"rendered":"ORA-01567 Error During Redo Log Group Drop Operation"},"content":{"rendered":"<p>&nbsp;<\/p>\n<p>If we are trying to drop the redo log group created for a thread that is active and if the drop operation of redo log groups would leave less than 2 redo log files for instance, the drop process of the redo log groups will give an ORA-01567 error.<\/p>\n<p>The possible error will be as follows.<\/p>\n<pre class=\"lang:default decode:true\">SQL&gt; alter database drop logfile group 8;\r\nalter database drop logfile group 8\r\n*\r\nERROR at line 1:\r\nORA-01567: dropping log 8 would leave less than 2 log files for instance ORCL4 (thread 4)\r\nORA-00312: online log 8 thread 4: '+RECO\/orcl\/onlinelog\/group_8.21358.908503693'\r\nORA-00312: online log 8 thread 4: '+DATA\/orcl\/onlinelog\/group_8.1527.908497073'<\/pre>\n<p>After making sure that the instance in which redo log group is used is closed, the redo log group will be dropped when this thread is disabled.<\/p>\n<p><strong>Querying threads:<\/strong><\/p>\n<pre class=\"lang:default decode:true \">SQL&gt; select thread#,status from v$thread;\r\n\r\nTHREAD# STATUS\r\n---------- ------------------\r\n1 OPEN\r\n2 OPEN\r\n3 OPEN\r\n4 CLOSED<\/pre>\n<p>If the instance with thread number 4 is closed but the thread is still active, it can be seen from the query above.<\/p>\n<p>In this case, we have to disable the thread of the instance we closed.<\/p>\n<pre class=\"lang:default decode:true \">SQL&gt; alter database disable thread 4;\r\n\r\nDatabase altered.<\/pre>\n<p>After that, the drop process of the redo log created for the relevant thread will be completed successfully.<\/p>\n<pre class=\"lang:default decode:true \">SQL&gt; alter database drop logfile group 8;\r\n\r\nDatabase altered.\r\n\r\nSQL&gt; alter database drop logfile group 9;\r\n\r\nDatabase altered.<\/pre>\n\n<div class=\"pvc_clear\"><\/div>\n<p id=\"pvc_stats_8215\" class=\"pvc_stats all  \" data-element-id=\"8215\" style=\"\"><i class=\"pvc-stats-icon medium\" aria-hidden=\"true\"><svg aria-hidden=\"true\" focusable=\"false\" data-prefix=\"far\" data-icon=\"chart-bar\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\" class=\"svg-inline--fa fa-chart-bar fa-w-16 fa-2x\"><path fill=\"currentColor\" d=\"M396.8 352h22.4c6.4 0 12.8-6.4 12.8-12.8V108.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v230.4c0 6.4 6.4 12.8 12.8 12.8zm-192 0h22.4c6.4 0 12.8-6.4 12.8-12.8V140.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v198.4c0 6.4 6.4 12.8 12.8 12.8zm96 0h22.4c6.4 0 12.8-6.4 12.8-12.8V204.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v134.4c0 6.4 6.4 12.8 12.8 12.8zM496 400H48V80c0-8.84-7.16-16-16-16H16C7.16 64 0 71.16 0 80v336c0 17.67 14.33 32 32 32h464c8.84 0 16-7.16 16-16v-16c0-8.84-7.16-16-16-16zm-387.2-48h22.4c6.4 0 12.8-6.4 12.8-12.8v-70.4c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v70.4c0 6.4 6.4 12.8 12.8 12.8z\" class=\"\"><\/path><\/svg><\/i> <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"16\" alt=\"Loading\" src=\"https:\/\/dbtut.com\/wp-content\/plugins\/page-views-count\/ajax-loader-2x.gif\" border=0 \/><\/p>\n<div class=\"pvc_clear\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; If we are trying to drop the redo log group created for a thread that is active and if the drop operation of redo log groups would leave less than 2 redo log files for instance, the drop process of the redo log groups will give an ORA-01567 error. The possible error will be &hellip;<\/p>\n<div class=\"pvc_clear\"><\/div>\n<p id=\"pvc_stats_8215\" class=\"pvc_stats all  \" data-element-id=\"8215\" style=\"\"><i class=\"pvc-stats-icon medium\" aria-hidden=\"true\"><svg aria-hidden=\"true\" focusable=\"false\" data-prefix=\"far\" data-icon=\"chart-bar\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\" class=\"svg-inline--fa fa-chart-bar fa-w-16 fa-2x\"><path fill=\"currentColor\" d=\"M396.8 352h22.4c6.4 0 12.8-6.4 12.8-12.8V108.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v230.4c0 6.4 6.4 12.8 12.8 12.8zm-192 0h22.4c6.4 0 12.8-6.4 12.8-12.8V140.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v198.4c0 6.4 6.4 12.8 12.8 12.8zm96 0h22.4c6.4 0 12.8-6.4 12.8-12.8V204.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v134.4c0 6.4 6.4 12.8 12.8 12.8zM496 400H48V80c0-8.84-7.16-16-16-16H16C7.16 64 0 71.16 0 80v336c0 17.67 14.33 32 32 32h464c8.84 0 16-7.16 16-16v-16c0-8.84-7.16-16-16-16zm-387.2-48h22.4c6.4 0 12.8-6.4 12.8-12.8v-70.4c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v70.4c0 6.4 6.4 12.8 12.8 12.8z\" class=\"\"><\/path><\/svg><\/i> <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"16\" alt=\"Loading\" src=\"https:\/\/dbtut.com\/wp-content\/plugins\/page-views-count\/ajax-loader-2x.gif\" border=0 \/><\/p>\n<div class=\"pvc_clear\"><\/div>\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,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[4],"tags":[1700,1698,1699],"class_list":["post-8215","post","type-post","status-publish","format-standard","","category-oracle","tag-drop-redo-log","tag-dropping-log-x-would-leave-less-than-2-log-files-for-instance","tag-ora-01567"],"aioseo_notices":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - 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