{"id":164600,"date":"2026-03-14T11:12:15","date_gmt":"2026-03-14T09:12:15","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/sqlite-3-51-3-s-ispravleniem-vozmozhnogo-povrezhdeniya-bazy-dannyh-v-rezhime-wal"},"modified":"2026-03-14T11:12:15","modified_gmt":"2026-03-14T09:12:15","slug":"sqlite-3-51-3-s-ispravleniem-vozmozhnogo-povrezhdeniya-bazy-dannyh-v-rezhime-wal","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/sqlite-3-51-3-s-ispravleniem-vozmozhnogo-povrezhdeniya-bazy-dannyh-v-rezhime-wal","title":{"rendered":"SQLite 3.51.3 hib\u00e1kkal, amelyek a WAL m\u00f3dban adatb\u00e1zis-k\u00e1rosod\u00e1shoz vezethetnek.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"SQLite 3.51.3 hib\u00e1kkal, amelyek a WAL m\u00f3dban adatb\u00e1zis-k\u00e1rosod\u00e1shoz vezethetnek.\" src=\"\/wp-content\/uploads\/2026\/03\/3c442654f8b6d86974735255e8214cfe.jpg\" style=\"display:block;margin: 0 auto;\" \/>                              <noindex>      <noindex><\/p>\n<p>M\u00e1rcius 13-\u00e1n egy korrekci\u00f3s kiad\u00e1st tett\u00fcnk k\u00f6zz\u00e9 a 3.51.3-as kompakt be\u00e1gyazott DBMS-r\u0151l. <a rel=\"nofollow\" href=\"https:\/\/sqlite.org\">SQLite<\/a>. A projekt k\u00f3dja C nyelven \u00edr\u00f3dott \u00e9s k\u00f6zszabads\u00e1gk\u00e9nt (public domain) terjesztett.<\/p>\n<p><\/noindex><\/noindex> <noindex><\/p>\n<p>A visszafel\u00e9 kompatibilit\u00e1ssal kapcsolatos probl\u00e9m\u00e1k miatt, amelyek n\u00e9h\u00e1ny \u00faj funkci\u00f3val \u00e1lltak \u00f6sszef\u00fcgg\u00e9sben, a verzi\u00f3 <a rel=\"nofollow\" href=\"https:\/\/sqlite.org\/releaselog\/3_52_0.html\">3.52.0<\/a> (m\u00e1rcius 6-\u00e1n megjelent) visszavon\u00e1sra ker\u00fclt.<\/p>\n<p><\/noindex>  <\/p>\n<p>A 3.51.3 v\u00e1ltoz\u00e1sainak list\u00e1ja:<\/p>\n<ul>\n<li>M\u00e1rcius 3-\u00e1n az SQLite egyik fejleszt\u0151je (Dan) felfedezett \u00e9s kijav\u00edtott egy hib\u00e1t, amely ritka esetekben adatb\u00e1zis s\u00e9r\u00fcl\u00e9shez vezethetett, \u00e9s ezt nevezt\u00e9k <a rel=\"nofollow\" href=\"https:\/\/sqlite.org\/wal.html#walresetbug\">\u201eWAL-reset hiba\u201c<\/a>:\n<ul>\n<li>Ez a hiba csak WAL m\u00f3dban m\u0171k\u00f6d\u0151 adatb\u00e1zisokn\u00e1l fordul el\u0151, ha ugyanahhoz a f\u00e1jlhoz t\u00f6bb kapcsolat nyitva van k\u00fcl\u00f6nb\u00f6z\u0151 sz\u00e1lakban vagy folyamatokban, \u00e9s ha ezek a kapcsolatok egyszerre pr\u00f3b\u00e1lnak \u00edr\u00e1si m\u0171veletet v\u00e9grehajtani, vagy ellen\u0151rz\u0151 pontot l\u00e9trehozni.<\/li>\n<li>A hiba az adatokhoz val\u00f3 hozz\u00e1f\u00e9r\u00e9s \u00fctk\u00f6z\u00e9s\u00e9vel kapcsolatos szigor\u00fa id\u0151korl\u00e1tok mellett j\u00f6n l\u00e9tre. Norm\u00e1l m\u0171k\u00f6d\u00e9si felt\u00e9telek k\u00f6z\u00f6tt nagyon ritk\u00e1n fordul el\u0151. A fejleszt\u0151knek nem siker\u00fclt reproduk\u00e1lniuk ezt a hib\u00e1t term\u00e9szetes k\u00f6rnyezetben, \u00e9s k\u00e9nyszer\u00fclt\u00fcnk olyan tesztel\u00e9si logik\u00e1t bevezetni az SQLite-ba, amely sz\u00e1nd\u00e9kosan l\u00e9trehozza a hiba el\u0151fordul\u00e1s\u00e1hoz sz\u00fcks\u00e9ges felt\u00e9teleket, hogy megbizonyosodjunk arr\u00f3l, hogy a probl\u00e9ma megold\u00f3dott.<\/li>\n<li>A hiba akkor l\u00e9p fel, amikor:\n<ol>\n<li>Egy kapcsolat ellen\u0151rzi az ellen\u0151rz\u0151 pontot. Ezen els\u0151 ellen\u0151rz\u00e9snek be kell fejez\u0151dnie. M\u00e1s szavakkal, az ellen\u0151rz\u00e9s sor\u00e1n sikeresen le kell m\u00e1solni a WAL f\u00e1jl \u00f6sszes tartalm\u00e1t az adatb\u00e1zisba, \u00e9s a WAL f\u00e1jlt olyan \u00e1llapotba kell hozni, amely lehet\u0151v\u00e9 teszi az alaphelyzetbe \u00e1ll\u00edt\u00e1st.<\/li>\n<li>Az els\u0151 ellen\u0151rz\u0151 pont befejez\u00e9se ut\u00e1n a m\u00e1sodik ellen\u0151rz\u0151 pont azonnal elindul.<\/li>\n<li>Am\u00edg a 2. l\u00e9p\u00e9sb\u0151l a m\u00e1sodik ellen\u0151rz\u0151 pont elindul, egy m\u00e1sik adatb\u00e1zis-kapcsolat tranzakci\u00f3t r\u00f6gz\u00edt, amely vissza\u00e1ll\u00edtja a WAL f\u00e1jlt, \u00e9s \u00faj tartalmat \u00edr a WAL f\u00e1jl elej\u00e9re.<\/li>\n<li>Az adatokhoz val\u00f3 hozz\u00e1f\u00e9r\u00e9s \u00fctk\u00f6z\u00e9se miatt a 2. l\u00e9p\u00e9sb\u0151l sz\u00e1rmaz\u00f3 m\u00e1sodik ellen\u0151rz\u0151 pont nem veszi figyelembe, hogy a WAL f\u00e1jlt a 3. l\u00e9p\u00e9ssel t\u00f6rt\u00e9n\u0151 tranzakci\u00f3 r\u00f6gz\u00edt\u00e9se miatt vissza\u00e1ll\u00edtott\u00e1k. A m\u00e1sodik ellen\u0151rz\u0151 pont helytelen \u00e9rt\u00e9ket \u00e1ll\u00edt be a WAL index fejl\u00e9c\u00e9nek egyik mez\u0151j\u00e9ben. Ez a mez\u0151 azt jelzi, hogy a WAL f\u00e1jl egy r\u00e9sze m\u00e1r r\u00f6gz\u00edtve lett az ellen\u0151rz\u0151 pontban, pedig val\u00f3j\u00e1ban nem \u00edgy van.<\/li>\n<li>Tov\u00e1bbi tranzakci\u00f3k r\u00f6gz\u00edt\u00e9se a WAL f\u00e1jl lapjainak sz\u00e1m\u00e1nak n\u00f6veked\u00e9s\u00e9hez vezet, amely meghaladja az els\u0151 ellen\u0151rz\u0151 pont id\u0151pontj\u00e1ban l\u00e9tez\u0151 lapok sz\u00e1m\u00e1t az 1. l\u00e9p\u00e9sb\u0151l.<\/li>\n<li>K\u00e9s\u0151bb, amikor a harmadik ellen\u0151rz\u0151 pont megjelenik, az megker\u00fcli az \u00f6sszes vagy egy r\u00e9sz\u00e9t a harmadik szakaszban r\u00f6gz\u00edtett tranzakci\u00f3nak. \u00cdgy a harmadik szakaszb\u00f3l sz\u00e1rmaz\u00f3 tranzakci\u00f3k egy r\u00e9sze nem ker\u00fcl a database f\u00e1jlba, ami a database f\u00e1jl s\u00e9r\u00fcl\u00e9s\u00e9hez vezet.<\/li>\n<\/ol>\n<\/li>\n<li>A hiba val\u00f3sz\u00edn\u0171leg minden SQLite verzi\u00f3ban megtal\u00e1lhat\u00f3, kezdve a 3.7.0-t\u00f3l (2010.07.21) eg\u00e9szen a 3.51.2-ig. Tov\u00e1bb\u00e1, a kor\u00e1bbi verzi\u00f3k egyes jav\u00edt\u00e1sai is ki lettek adva: <a rel=\"nofollow\" href=\"https:\/\/sqlite.org\/src\/info\/863c171b76cd36e0\">3.44.6<\/a> \u00e9s <a rel=\"nofollow\" href=\"https:\/\/sqlite.org\/src\/info\/c7facf7ac58d2cda\">3.50.7<\/a>.<\/li>\n<\/ul>\n<\/li>\n<li>M\u00e1s kisebb jav\u00edt\u00e1sok.<\/li>\n<\/ul>\n<p>Forr\u00e1s: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.linux.org.ru\/news\/opensource\/18241537\">linux.org.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>13-\u0433\u043e \u043c\u0430\u0440\u0442\u0430 \u0441\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0439 \u0432\u044b\u043f\u0443\u0441\u043a 3.51.3 \u043a\u043e\u043c\u043f\u0430\u043a\u0442\u043d\u043e\u0439 \u0432\u0441\u0442\u0440\u0430\u0438\u0432\u0430\u0435\u043c\u043e\u0439 \u0421\u0423\u0411\u0414 SQLite. \u041a\u043e\u0434 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 \u043d\u0430\u043f\u0438\u0441\u0430\u043d \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 C \u0438 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u0442\u0441\u044f \u043a\u0430\u043a \u043e\u0431\u0449\u0435\u0441\u0442\u0432\u0435\u043d\u043d\u043e\u0435 \u0434\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 (public domain). \u0412 \u0441\u0432\u044f\u0437\u0438 \u0441 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430\u043c\u0438 \u043e\u0431\u0440\u0430\u0442\u043d\u043e\u0439 \u0441\u043e\u0432\u043c\u0435\u0441\u0442\u0438\u043c\u043e\u0441\u0442\u0438, \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u044b\u043c\u0438 \u0441 \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u043c\u0438 \u043d\u043e\u0432\u044b\u043c\u0438 \u0444\u0443\u043d\u043a\u0446\u0438\u044f\u043c\u0438, \u0432\u0435\u0440\u0441\u0438\u044f 3.52.0 (\u0432\u044b\u0448\u0435\u0434\u0448\u0430\u044f 6-\u0433\u043e \u043c\u0430\u0440\u0442\u0430) \u0431\u044b\u043b\u0430 \u043e\u0442\u043e\u0437\u0432\u0430\u043d\u0430. \u0421\u043f\u0438\u0441\u043e\u043a \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0439 \u0432\u0435\u0440\u0441\u0438\u0438 3.51.3: 3-\u0433\u043e \u043c\u0430\u0440\u0442\u0430 \u043e\u0434\u0438\u043d \u0438\u0437 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u043e\u0432 SQLite (Dan) \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0438\u043b \u0438 \u0443\u0441\u0442\u0440\u0430\u043d\u0438\u043b [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":8,"featured_media":164601,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-164600","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 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