{"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\/nl\/blog\/news\/obnovlenie-postgresql-vypusk-reshape-utility-dlya-migraczii-na-novuyu-shemu-bez-ostanovki-raboty","title":{"rendered":"PostgreSQL-update. Uitgave reshape, een hulpprogramma voor migratie naar een nieuw schema zonder onderbreking van de werking.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Corrigerende updates zijn aangemaakt voor alle ondersteunde PostgreSQL-versies: 14.2, 13.6, 12.10, 11.15 en 10.20, waarin 55 fouten zijn opgelost die de afgelopen drie maanden zijn ontdekt. Onder andere zijn er problemen verholpen die in zeldzame gevallen leidden tot beschadiging van indices bij het aanpassen van HOT-ketens (heap-only tuple) tijdens de uitvoering van de VACUUM-operatie of bij het uitvoeren van de REINDEX CONCURRENTLY-operatie voor indices van tabellen die gebruikmaken van de TOAST-opslagsystemen.     <\/p>\n<p>Er werden noodgevallen bij het uitvoeren van ALTER STATISTICS en bij het ophalen van gegevens met multirange-typen opgelost. In de queryplanner zijn fouten verholpen die leidden tot onjuiste resultaten. Geheugenlekken bij het bijwerken van indexen op uitdrukkingen en bij het uitvoeren van de bewerking \u2018REASSIGN OWNED BY\u2019 over een groot aantal objecten zijn opgelost. Er is uitgebreide statistiek voor gelabelde tabellen opgebouwd.     <\/p>\n<p>Verder kan de release van de reshape-tool worden opgemerkt, waarmee complexe schema-updates in PostgreSQL zonder downtime kunnen worden uitgevoerd, die normaal gesproken handmatige wijzigingen en tijdelijke stopzetting van de services die de database gebruiken, vereisen. De tool maakt het mogelijk om van een oud datamodel naar een nieuw datamodel over te schakelen zonder lange blokkeringen en zonder de verwerking van verzoeken te onderbreken. De tool cre\u00ebert automatisch weergaven van tabellen waarmee applicaties gedurende de datamodel-migratie kunnen blijven werken, en configureert triggers die toevoeging en verwijdering van gegevens tussen het oude en nieuwe datamodel vertalen.     <\/p>\n<p>Bij gebruik van reshape tijdens de migratie blijven het oude en nieuwe datamodel tegelijkertijd toegankelijk, zodat applicaties geleidelijk naar het nieuwe datamodel kunnen worden overgezet zonder downtime (in grote infrastructuren kunnen verwerkers geleidelijk van oud naar nieuw worden vervangen). Na de voltooiing van de migratie van applicaties naar het nieuwe datamodel worden de weergaven en triggers die zijn gemaakt ter ondersteuning van het oude datamodel verwijderd. Mocht zich tijdens de migratie een probleem met applicaties voordoen, dan kan de wijziging van het datamodel worden teruggedraaid en kan er naar de oude staat worden teruggekeerd.<br \/>\n<br \/>Bron: <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 5.0.3 - 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