{"id":103298,"date":"2022-02-11T15:36:48","date_gmt":"2022-02-11T13:36:48","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/obnovlenie-postgresql-vypusk-reshape-utility-dlya-migraczii-na-novuyu-shemu-bez-ostanovki-raboty"},"modified":"2022-02-11T15:36:48","modified_gmt":"2022-02-11T13:36:48","slug":"obnovlenie-postgresql-vypusk-reshape-utility-dlya-migraczii-na-novuyu-shemu-bez-ostanovki-raboty","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sv\/blog\/news\/obnovlenie-postgresql-vypusk-reshape-utility-dlya-migraczii-na-novuyu-shemu-bez-ostanovki-raboty","title":{"rendered":"Uppdatering av PostgreSQL. Utg\u00e5van reshape, verktyg f\u00f6r migration till en ny struktur utan driftstopp.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Korrigeringsuppdateringar har skapats f\u00f6r alla st\u00f6dda versioner av PostgreSQL: 14.2, 13.6, 12.10, 11.15 och 10.20, d\u00e4r 55 fel har \u00e5tg\u00e4rdats som uppt\u00e4cktes under de senaste tre m\u00e5naderna. Bland dessa har problem som s\u00e4llan ledde till indexkorruption vid f\u00f6r\u00e4ndringar av HOT-kedjor (heap-only tuple) under VACUUM-operationer eller vid REINDEX CONCURRENTLY-operationer f\u00f6r index p\u00e5 tabeller som anv\u00e4nder TOAST-lagringsmetoden \u00e5tg\u00e4rdats.     <\/p>\n<p>\u0423\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u044b \u0430\u0432\u0430\u0440\u0438\u0439\u043d\u044b\u0435 \u0437\u0430\u0432\u0435\u0440\u0448\u0435\u043d\u0438\u044f \u043f\u0440\u0438 \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0438 ALTER STATISTICS  \u0438 \u043f\u0440\u0438 \u0438\u0437\u0432\u043b\u0435\u0447\u0435\u043d\u0438\u0438 \u0434\u0430\u043d\u043d\u044b\u0445 \u0441 multirange-\u0442\u0438\u043f\u0430\u043c\u0438. \u0412 \u043f\u043b\u0430\u043d\u0438\u0440\u043e\u0432\u0449\u0438\u043a\u0435 \u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u044b \u043e\u0448\u0438\u0431\u043a\u0438, \u043f\u0440\u0438\u0432\u043e\u0434\u0438\u0432\u0448\u0438\u0435 \u043a \u0432\u044b\u0432\u043e\u0434\u0443 \u043d\u0435\u043a\u043e\u0440\u0440\u0435\u043a\u0442\u043d\u044b\u0445 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u043e\u0432. \u0423\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u044b \u0443\u0442\u0435\u0447\u043a\u0438 \u043f\u0430\u043c\u044f\u0442\u0438 \u043f\u0440\u0438  \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0438 \u0438\u043d\u0434\u0435\u043a\u0441\u043e\u0432 \u043f\u043e \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u044f\u043c \u0438 \u043f\u0440\u0438 \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0438 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438 &#171;REASSIGN OWNED BY&#187; \u043d\u0430\u0434 \u0431\u043e\u043b\u044c\u0448\u0438\u043c \u0447\u0438\u0441\u043b\u043e\u043c \u043e\u0431\u044a\u0435\u043a\u0442\u043e\u0432. \u041e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u043e \u043f\u043e\u0441\u0442\u0440\u043e\u0435\u043d\u0438\u0435 \u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u043d\u043e\u0439 \u0441\u0442\u0430\u0442\u0438\u0441\u0442\u0438\u043a\u0438 \u0434\u043b\u044f \u0441\u0435\u0433\u043c\u0435\u043d\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u0442\u0430\u0431\u043b\u0438\u0446.     <\/p>\n<p>En nyhet \u00e4r lanseringen av verktyget reshape, som m\u00f6jligg\u00f6r komplexa databasarkitekturuppdateringar i PostgreSQL utan driftstopp, vilket normalt kr\u00e4ver manuell \u00e4ndring och tempor\u00e4rt avbrott av tj\u00e4nster som anv\u00e4nder databasen. Verktyget g\u00f6r det m\u00f6jligt att byta fr\u00e5n den gamla databasstrukturen till den nya utan l\u00e5ngvariga l\u00e5sningar och utan att avbryta fr\u00e5gebehandlingen. Verktyget skapar automatiskt visningar av tabeller som applikationer kan forts\u00e4tta arbeta med under databasens migrationsprocess och st\u00e4ller \u00e4ven in triggers f\u00f6r att \u00f6verf\u00f6ra till\u00e4ggs- och borttagningsoperationer mellan den gamla och den nya strukturen.     <\/p>\n<p>Genom att anv\u00e4nda reshape under migreringen \u00e4r b\u00e5de den gamla och den nya strukturen tillg\u00e4ngliga samtidigt, och applikationerna kan gradvis flyttas \u00f6ver till den nya strukturen utan driftstopp (i stora infrastrukturer kan handhavare bytas ut stegvis fr\u00e5n den gamla till den nya). N\u00e4r \u00f6verg\u00e5ngen till den nya strukturen har slutf\u00f6rts tas de visningar och triggers som skapades f\u00f6r att st\u00f6dja den gamla strukturen bort. Om problem med applikationerna uppt\u00e4cks under migreringen kan f\u00f6r\u00e4ndringen av strukturen \u00e5ngras och tillbaka till det gamla tillst\u00e5ndet \u00e5terst\u00e4llas.<br \/>\n<br \/>K\u00e4lla: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=56677\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0421\u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u044b \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0435 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u0434\u043b\u044f \u0432\u0441\u0435\u0445 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u043c\u044b\u0445 \u0432\u0435\u0442\u043e\u043a PostgreSQL: 14.2, 13.6, 12.10, 11.15 \u0438 10.20, \u0432 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u043e 55 \u043e\u0448\u0438\u0431\u043e\u043a, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u043d\u044b\u0445 \u0437\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0438\u0435 \u0442\u0440\u0438 \u043c\u0435\u0441\u044f\u0446\u0430. \u0412 \u0442\u043e\u043c \u0447\u0438\u0441\u043b\u0435 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u044b \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u044b, \u043f\u0440\u0438\u0432\u043e\u0434\u0438\u0432\u0448\u0438\u0435 \u043f\u0440\u0438 \u0440\u0435\u0434\u043a\u043e\u043c \u0441\u0442\u0435\u0447\u0435\u043d\u0438\u0438 \u043e\u0431\u0441\u0442\u043e\u044f\u0442\u0435\u043b\u044c\u0441\u0442\u0432 \u043a \u043f\u043e\u0432\u0440\u0435\u0436\u0434\u0435\u043d\u0438\u044e \u0438\u043d\u0434\u0435\u043a\u0441\u043e\u0432 \u043f\u0440\u0438 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0438 \u0446\u0435\u043f\u043e\u0447\u0435\u043a HOT (heap-only tuple) \u0432\u043e \u0432\u0440\u0435\u043c\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438 VACUUM \u0438\u043b\u0438 \u043f\u0440\u0438 \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0438 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438 REINDEX CONCURRENTLY \u0434\u043b\u044f [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-103298","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - 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