{"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\/et\/blog\/news\/sqlite-3-51-3-s-ispravleniem-vozmozhnogo-povrezhdeniya-bazy-dannyh-v-rezhime-wal","title":{"rendered":"SQLite 3.51.3 koos v\u00f5imaliku WAL-re\u017eiimi andmebaasi kahjustamise parandamisega","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"SQLite 3.51.3 koos v\u00f5imaliku WAL-re\u017eiimi andmebaasi kahjustamise parandamisega\" src=\"\/wp-content\/uploads\/2026\/03\/3c442654f8b6d86974735255e8214cfe.jpg\" style=\"display:block;margin: 0 auto;\" \/>                              <noindex>      <noindex><\/p>\n<p>13. m\u00e4rtsil toimus kompaktse sisseehitatud DBMS versiooni 3.51.3 korrigeeriv v\u00e4ljalase <a rel=\"nofollow\" href=\"https:\/\/sqlite.org\">SQLite<\/a>. Projekti kood on kirjutatud C keeles ja levitatakse kui avalik domeen.<\/p>\n<p><\/noindex><\/noindex> <noindex><\/p>\n<p>Seoses tagurpidi \u00fchilduvuse probleemidega, mis on seotud m\u00f5ne uue funktsiooniga, versioon <a rel=\"nofollow\" href=\"https:\/\/sqlite.org\/releaselog\/3_52_0.html\">3.52.0<\/a> (mis ilmus 6. m\u00e4rtsil) v\u00f5eti tagasi.<\/p>\n<p><\/noindex>  <\/p>\n<p>Versiooni 3.51.3 muudatuste loetelu:<\/p>\n<ul>\n<li>3. m\u00e4rtsil avastas ja k\u00f5rvaldas \u00fcks SQLite arendajatest (Dan) vea, mis harvadel juhtudel v\u00f5is p\u00f5hjustada andmebaasi kahjustumist ja mille nimeks oli <a rel=\"nofollow\" href=\"https:\/\/sqlite.org\/wal.html#walresetbug\">\u00abWAL-reset bug\u00bb<\/a>:\n<ul>\n<li>See viga ilmneb ainult andmebaasides, mis t\u00f6\u00f6tavad WAL-re\u017eiimis, kui sama faili avab kaks v\u00f5i rohkem \u00fchendust erinevates l\u00f5ngades v\u00f5i protsessides, ja kui need kaks \u00fchendust \u00fcritavad samal ajal kirjutada v\u00f5i luua kontrollpunkti.<\/li>\n<li>Viga on seotud andmete ligip\u00e4\u00e4su konfliktiga rangete ajapiirangute korral. Tavalistes t\u00f6\u00f6tingimustes esineb see \u00e4\u00e4rmiselt harva. Arendajatel ei \u00f5nnestunud seda viga looduslikes tingimustes korrata ning nad pidid SQLite-sse lisama erilise testimise loogika, mis tahtlikult loob tingimused vea tekkimiseks, et veenduda, et probleem on lahendatud.<\/li>\n<li>Viga ilmneb, kui:\n<ol>\n<li>\u00dcks \u00fchendus teostab kontrollpunkti kontrollimist. See esimene kontroll peab olema l\u00f5petatud. Teisis\u00f5nu, kontrolli k\u00e4igus tuleb t\u00f5husalt kopeerida kogu WAL-faili sisu tagasi andmebaasi ja viia WAL-fail seisundisse, kus seda saab l\u00e4htestada.<\/li>\n<li>Kohe p\u00e4rast esimese kontrollpunkti l\u00f5petamist k\u00e4ivitatakse teine.<\/li>\n<li>Kuni k\u00e4ivitatakse teine kontrollpunkt, mis tuleneb punktist 2, fikseerib teine andmebaasi\u00fchendus tehingu, mis l\u00e4htestab WAL-faili ja salvestab uue sisu WAL-faili algusesse.<\/li>\n<li>Andmete ligip\u00e4\u00e4su konflikti t\u00f5ttu ei arvestata teise kontrollpunkti puhul, mis tuleneb punktist 2, et WAL-fail oli l\u00e4htestatud tulemuste fikseerimise t\u00f5ttu punktis 3. Teine kontrollpunkt seadmise vale v\u00e4\u00e4rtuse \u00fcheks v\u00f5tmest WAL-indeksi p\u00e4isesse. See v\u00e4li n\u00e4itab, et osa WAL-failist on juba fikseeritud kontrollpunktis, kuigi tegelikult on see vale.<\/li>\n<li>Lisatehingute fikseerimine viib WAL-failis lehek\u00fclgede arvu suurenemiseni, mis \u00fcletab lehek\u00fclgede arvu, mis eksisteeris esimese kontrollpunkti ajal punktis 1.<\/li>\n<li>Hiljem, kui kolmas kontrollpunkt tekib, j\u00e4tab see vahele kogu v\u00f5i osa tehingust, mis on salvestatud etapis 3. Seet\u00f5ttu ei satu etapi 3 tehingu osad andmebaasifaili, mille tulemusel on andmebaasifail kahjustatud.<\/li>\n<\/ol>\n<\/li>\n<li>Viga on t\u00f5en\u00e4oliselt olemas k\u00f5igis SQLite versioonides alates 3.7.0 (21.07.2010) kuni 3.51.2. Samuti on v\u00e4lja antud parandused m\u00f5nedele varasematele versioonidele: <a rel=\"nofollow\" href=\"https:\/\/sqlite.org\/src\/info\/863c171b76cd36e0\">3.44.6<\/a> ja <a rel=\"nofollow\" href=\"https:\/\/sqlite.org\/src\/info\/c7facf7ac58d2cda\">3.50.7<\/a>.<\/li>\n<\/ul>\n<\/li>\n<li>Teised v\u00e4hem t\u00e4henduslikud parandused.<\/li>\n<\/ul>\n<p>Allikas: <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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