{"id":11132,"date":"2025-12-01T11:54:03","date_gmt":"2025-12-01T02:54:03","guid":{"rendered":"https:\/\/www.skyer9.pe.kr\/wordpress\/?p=11132"},"modified":"2025-12-01T11:54:03","modified_gmt":"2025-12-01T02:54:03","slug":"deadlock-found-when-trying-to-get-lock-try-restarting-transaction","status":"publish","type":"post","link":"https:\/\/www.skyer9.pe.kr\/wordpress\/?p=11132","title":{"rendered":"Deadlock found when trying to get lock; try restarting transaction"},"content":{"rendered":"<h1>Deadlock found when trying to get lock; try restarting transaction<\/h1>\n<h2>\uc6d0\uc778<\/h2>\n<ul>\n<li>\n<p>\uc7a0\uae08 \uc21c\uc11c\uc758 \ubd88\uc77c\uce58:<\/p>\n<p>\ud2b8\ub79c\uc7ad\uc158 A\uac00 \ub9ac\uc18c\uc2a4 X\uc5d0 \uc7a0\uae08\uc744 \uac78\uace0 \ub9ac\uc18c\uc2a4 Y\ub97c \uc694\uccad\ud569\ub2c8\ub2e4.<\/p>\n<p>\ud2b8\ub79c\uc7ad\uc158 B\uac00 \ub9ac\uc18c\uc2a4 Y\uc5d0 \uc7a0\uae08\uc744 \uac78\uace0 \ub9ac\uc18c\uc2a4 X\ub97c \uc694\uccad\ud569\ub2c8\ub2e4.<\/p>\n<p>\ub450 \ud2b8\ub79c\uc7ad\uc158 \ubaa8\ub450 \uc0c1\ub300\ubc29\uc774 \uac00\uc9c4 \uc7a0\uae08\uc774 \ud480\ub9ac\uae30\ub97c \uc601\uc6d0\ud788 \uae30\ub2e4\ub9ac\uac8c \ub429\ub2c8\ub2e4.<\/p>\n<\/li>\n<li>\n<p>\uae34 \ud2b8\ub79c\uc7ad\uc158 \uc2dc\uac04:<\/p>\n<p>\ud2b8\ub79c\uc7ad\uc158\uc774 \ub108\ubb34 \uc624\ub798 \uc2e4\ud589\ub418\uba74, \ud574\ub2f9 \ud2b8\ub79c\uc7ad\uc158\uc774 \ubcf4\uc720\ud558\uace0 \uc788\ub294 \uc7a0\uae08 \ub54c\ubb38\uc5d0 \ub2e4\ub978 \ud2b8\ub79c\uc7ad\uc158\ub4e4\uc774 \ub9ac\uc18c\uc2a4\uc5d0 \uc811\uadfc\ud558\uc9c0 \ubabb\ud558\uace0 \ub300\uae30\ud558\uac8c \ub418\uc5b4 \uad50\ucc29 \uc0c1\ud0dc\uc758 \uc704\ud5d8\uc774 \ucee4\uc9d1\ub2c8\ub2e4.<\/p>\n<\/li>\n<li>\n<p>\ubd80\uc801\uc808\ud55c \uc778\ub371\uc2a4:<\/p>\n<p>\ucffc\ub9ac\uac00 \uc801\uc808\ud55c \uc778\ub371\uc2a4\ub97c \uc0ac\uc6a9\ud558\uc9c0 \ubabb\ud558\uace0 \ub300\ub7c9\uc758 \ud589\uc744 \uac80\uc0ac\ud558\uba74\uc11c \ud544\uc694 \uc774\uc0c1\uc758 \ub9ce\uc740 \ud589\uc5d0 \uc7a0\uae08\uc744 \uac78\uac8c \ub420 \ub54c \ubc1c\uc0dd\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/li>\n<\/ul>\n<blockquote>\n<p>UPDATE \ub610\ub294 DELETE\ub294 \uc77c\ubc18\uc801\uc73c\ub85c SQL \ubb38 \ucc98\ub9ac\uc5d0\uc11c \uc2a4\uce94\ub418\ub294 \ubaa8\ub4e0 \uc778\ub371\uc2a4 \ub808\ucf54\ub4dc\uc5d0 \ub808\ucf54\ub4dc \uc7a0\uae08\uc744 \uc124\uc815\ud55c\ub2e4 &#8230; &#8230; , WHERE\uc808\uc5d0 \uc801\uc808\ud55c \uc778\ub371\uc2a4\ub97c \uc0ac\uc6a9\ud558\uc9c0 \uc54a\uc73c\uba74 MySQL\uc740 \ucffc\ub9ac\ub97c \uc218\ud589\ud558\uae30 \uc704\ud574 \uc804\uccb4 table\uc5d0 lock\uc744 \uac74\ub2e4<\/p>\n<\/blockquote>\n<ul>\n<li>\n<p>\uc77d\uae30\/\uc4f0\uae30 \ub3d9\uc2dc\uc131 \ubb38\uc81c:<\/p>\n<p>SELECT &#8230; FOR UPDATE\uc640 \uac19\uc774 \uba85\uc2dc\uc801\uc778 \uc7a0\uae08\uc744 \uc0ac\uc6a9\ud558\ub294 \ucffc\ub9ac\uac00 \ub2e4\ub978 \uc4f0\uae30 \uc791\uc5c5\uacfc \ucda9\ub3cc\ud560 \ub54c \ubc1c\uc0dd\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/li>\n<\/ul>\n<h2>\ud574\uacb0\ucc45<\/h2>\n<ul>\n<li>\n<p>\uc7a0\uae08 \uc21c\uc11c \ud1b5\uc77c:<\/p>\n<p>\uc560\ud50c\ub9ac\ucf00\uc774\uc158 \uc804\uccb4\uc5d0\uc11c \ud14c\uc774\ube14 \ub610\ub294 \ub808\ucf54\ub4dc\ub97c \uc7a0\uadf8\ub294 \uc21c\uc11c\ub97c \ud56d\uc0c1 \ub3d9\uc77c\ud558\uac8c \uc720\uc9c0\ud569\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, Table A\uc640 Table B\ub97c \ub3d9\uc2dc\uc5d0 \uc218\uc815\ud574\uc57c \ud560 \uacbd\uc6b0, \ubaa8\ub4e0 \ud2b8\ub79c\uc7ad\uc158\uc740 A\ub97c \uba3c\uc800 \uc7a0\uadfc \ud6c4 B\ub97c \uc7a0\uadf8\ub3c4\ub85d \uaddc\uce59\uc744 \ub9cc\ub4ed\ub2c8\ub2e4.<\/p>\n<\/li>\n<li>\n<p>\ud2b8\ub79c\uc7ad\uc158 \ucd5c\uc18c\ud654 \ubc0f \ub2e8\ucd95:<\/p>\n<\/li>\n<li>\n<p>\uc801\uc808\ud55c \uc778\ub371\uc2a4 \uc0ac\uc6a9:<\/p>\n<p>WHERE \uc808\uc5d0\uc11c \uc0ac\uc6a9\ub418\ub294 \uceec\ub7fc\uc5d0 \uc778\ub371\uc2a4\ub97c \uc0dd\uc131\ud558\uc5ec, \ucffc\ub9ac\uac00 \uaf2d \ud544\uc694\ud55c \ub808\ucf54\ub4dc\uc5d0\ub9cc \uc7a0\uae08\uc744 \uac78\ub3c4\ub85d \ud569\ub2c8\ub2e4. \uc778\ub371\uc2a4\uac00 \uc5c6\uc73c\uba74 \uc2a4\uce94\ud558\ub294 \ubaa8\ub4e0 \ub808\ucf54\ub4dc\uc5d0 \uc7a0\uae08\uc744 \uac78\uc5b4 \uad50\ucc29 \uc0c1\ud0dc\ub97c \uc720\ubc1c\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/li>\n<li>\n<p>SELECT FOR UPDATE \uc0ac\uc6a9 \ucd5c\uc18c\ud654:<\/p>\n<p>\uaf2d \ud544\uc694\ud55c \uacbd\uc6b0\uc5d0\ub9cc \uc0ac\uc6a9\ud558\uace0, \uc0ac\uc6a9 \uc2dc\uc5d0\ub294 LIMIT \uc774\ub098 WHERE \uc808\uc744 \ud1b5\ud574 \uc7a0\uae08 \ubc94\uc704\ub97c \ucd5c\uc18c\ud654\ud569\ub2c8\ub2e4.<\/p>\n<\/li>\n<\/ul>\n<h2>\uad00\ub828 \ucffc\ub9ac<\/h2>\n<pre><code class=\"language-sql\">-- \ud604\uc7ac LOCK\uc774 \uac78\ub824 \ub300\uae30\uc911\uc778 \uc815\ubcf4\nSELECT * FROM information_schema.INNODB_LOCK_WAITS;\n\n-- LOCK\uc744 \uac74 \uc815\ubcf4\nSELECT * FROM information_schema.INNODB_LOCKS;\n\n-- LOCK\uc744 \uac78\uace0 \uc788\ub294 \ud504\ub85c\uc138\uc2a4 \uc815\ubcf4\nSELECT * FROM information_schema.INNODB_TRX;\n\n-- \ud604\uc7ac \uad50\ucc29 \uc0c1\ud0dc \uc815\ubcf4\nSHOW ENGINE INNODB STATUS;\n\n-- \uc7a0\uae08 \ub300\uae30 \uc2dc\uac04 \uc81c\ud55c(\ucd08)\nSELECT @@innodb_lock_wait_timeout;\n\n-- \uad50\ucc29 \uc0c1\ud0dc \uc790\ub3d9 \uac10\uc9c0 \uae30\ub2a5\uc758 \ud65c\uc131\ud654 \uc5ec\ubd80(ON = 1)\nSELECT @@innodb_deadlock_detect;\n\n-- \uc804\uc5ed \uaca9\ub9ac \uc218\uc900\nSELECT @@global.tx_isolation;\n\n-- \uc138\uc158 \uaca9\ub9ac \uc218\uc900\nSELECT @@session.tx_isolation;\n\n-- \ud604\uc7ac \ud2b8\ub79c\uc7ad\uc158 \uaca9\ub9ac \uc218\uc900(8.0 \uc774\ud6c4)\nSELECT @@transaction_isolation;<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Deadlock found when trying to get lock; try restarting transaction \uc6d0\uc778 \uc7a0\uae08 \uc21c\uc11c\uc758 \ubd88\uc77c\uce58: \ud2b8\ub79c\uc7ad\uc158 A\uac00 \ub9ac\uc18c\uc2a4 X\uc5d0 \uc7a0\uae08\uc744 \uac78\uace0 \ub9ac\uc18c\uc2a4 Y\ub97c \uc694\uccad\ud569\ub2c8\ub2e4. \ud2b8\ub79c\uc7ad\uc158 B\uac00 \ub9ac\uc18c\uc2a4 Y\uc5d0 \uc7a0\uae08\uc744 \uac78\uace0 \ub9ac\uc18c\uc2a4 X\ub97c \uc694\uccad\ud569\ub2c8\ub2e4. \ub450 \ud2b8\ub79c\uc7ad\uc158 \ubaa8\ub450 \uc0c1\ub300\ubc29\uc774 \uac00\uc9c4 \uc7a0\uae08\uc774 \ud480\ub9ac\uae30\ub97c \uc601\uc6d0\ud788 \uae30\ub2e4\ub9ac\uac8c \ub429\ub2c8\ub2e4. \uae34 \ud2b8\ub79c\uc7ad\uc158 \uc2dc\uac04: \ud2b8\ub79c\uc7ad\uc158\uc774 \ub108\ubb34 \uc624\ub798 \uc2e4\ud589\ub418\uba74, \ud574\ub2f9 \ud2b8\ub79c\uc7ad\uc158\uc774 \ubcf4\uc720\ud558\uace0 \uc788\ub294 \uc7a0\uae08 \ub54c\ubb38\uc5d0\u2026 <span class=\"read-more\"><a href=\"https:\/\/www.skyer9.pe.kr\/wordpress\/?p=11132\">Read More &raquo;<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[],"class_list":["post-11132","post","type-post","status-publish","format-standard","hentry","category-devops"],"_links":{"self":[{"href":"https:\/\/www.skyer9.pe.kr\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/11132","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.skyer9.pe.kr\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.skyer9.pe.kr\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.skyer9.pe.kr\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.skyer9.pe.kr\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=11132"}],"version-history":[{"count":1,"href":"https:\/\/www.skyer9.pe.kr\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/11132\/revisions"}],"predecessor-version":[{"id":11133,"href":"https:\/\/www.skyer9.pe.kr\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/11132\/revisions\/11133"}],"wp:attachment":[{"href":"https:\/\/www.skyer9.pe.kr\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=11132"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.skyer9.pe.kr\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=11132"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.skyer9.pe.kr\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=11132"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}