{"id":1224,"date":"2018-04-09T14:09:11","date_gmt":"2018-04-09T13:09:11","guid":{"rendered":"https:\/\/dbafox.com\/?p=1224"},"modified":"2018-04-09T14:14:53","modified_gmt":"2018-04-09T13:14:53","slug":"orale-query-locking","status":"publish","type":"post","link":"https:\/\/dbafox.com\/?p=1224","title":{"rendered":"Oracle – Query locking"},"content":{"rendered":"

Display locks in Oracle database<\/h2>\n
\r\nselect * from gv$lock where block = 1\r\n\r\nselect * from gv$session where sid in (1998)\r\n\r\nselect sid, serial#, lockwait,\r\nblocking_instance, blocking_session,\r\nfinal_blocking_instance, final_blocking_session\r\nfrom gv$session where program not like 'oracle%'\r\nand blocking_session is not null\r\n\r\n--ALTER SYSTEM KILL SESSION 'sid,serial#,inst_id';\r\n\r\nselect * from gv$session where status = 'KILLED'\r\n\r\n-- non-RAC environment\r\nSELECT Decode(request, 0, 'Holder: ',\r\n  'Waiter: ')\r\n  ||vl.sid sess,\r\n  status,id1,id2,lmode,request,vl.TYPE\r\nFROM v$lock vl,v$session vs\r\nWHERE ( id1, id2, vl.TYPE ) IN \r\n(SELECT id1, id2, TYPE FROM v$lock\r\n  WHERE request > 0)\r\n  AND vl.sid = vs.sid\r\nORDER BY id1, request\r\n<\/pre>\n
[Look for UBABLK in gv$transaction – if value remains static for a while, the transaction is potentially blocked<\/h2>\n
\r\nselect * from gv$transaction\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"
Display locks in Oracle database select * from gv$lock where block = 1 select * from gv$session where sid in (1998) select sid, serial#, lockwait, blocking_instance, blocking_session, final_blocking_instance, final_blocking_session from gv$session where program not like ‘oracle%’ and blocking_session is not null –ALTER SYSTEM KILL SESSION ‘sid,serial#,inst_id’; select * from gv$session where status = ‘KILLED’ –… <\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","pgc_sgb_lightbox_settings":"","footnotes":""},"categories":[28,1],"tags":[],"class_list":["post-1224","post","type-post","status-publish","format-standard","hentry","category-oracle-technical","category-uncategorized"],"yoast_head":"\nOracle - Query locking - dbafox<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/dbafox.com\/?p=1224\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Oracle - Query locking - dbafox\" \/>\n<meta property=\"og:description\" content=\"Display locks in Oracle database select * from gv$lock where block = 1 select * from gv$session where sid in (1998) select sid, serial#, lockwait, blocking_instance, blocking_session, final_blocking_instance, final_blocking_session from gv$session where program not like 'oracle%' and blocking_session is not null --ALTER SYSTEM KILL SESSION 'sid,serial#,inst_id'; 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