[B! SQLite] yyamanoã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

yyamano id:yyamano

SQLiteã«é–¢ã™ã‚‹yyamanoã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (6)

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Android ã‚¢ãƒ—ãƒªé–‹ç™ºã«ãŠã‘ã‚‹ SQLite ã®ãƒãƒƒã‚¯ã¨ãƒžãƒ«ãƒã‚¹ãƒ¬ãƒƒãƒ‰ã®è©± - ã²ã ã¾ã‚Šã‚½ã‚±ãƒƒãƒˆã¯å£Šã‚Œãªã„
Android ã‚¢ãƒ—ãƒªé–‹ç™ºã§ SQLite ã‚’ä½¿ã£ã¦ã„ã‚‹ã¨ã€ã—ã°ã—ã°æ¬¡ã®ã‚ˆã†ãªä¾‹å¤–ãŒæŠ•ã’ã‚‰ã‚Œã‚‹ã“ã¨ãŒã‚ã‚Šã¾ã™ã€‚*1 android.database.sqlite.SQLite DatabaseLockedException: database is locked (code 5) è»½ãèª¿ã¹ã¦ã¿ãŸã¨ã“ã‚ ã“ã®ã‚¨ãƒ©ãƒ¼ã‚’ããã£ã¦ã¿ã‚‹ã¨ã€ã€Œè¤‡æ•°ã‚¹ãƒ¬ãƒƒãƒ‰ã‹ã‚‰ SQLite ã‚’ä½¿ã†å ´åˆã«ã€ãã‚Œãžã‚Œã®ã‚¹ãƒ¬ãƒƒãƒ‰ã§ç•°ãªã‚‹ SQLite Database ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã‚’ä½¿ã£ã¦ã„ã‚‹ã¨ã“ã®ã‚¨ãƒ©ãƒ¼ãŒå‡ºã‚‹ã“ã¨ãŒã‚ã‚‹ã€ ã¨ã‹æ›¸ã‹ã‚Œã¦ã„ã¦ã€å›žé¿ç–ã¨ã—ã¦ ã€Œè¤‡æ•°ã‚¹ãƒ¬ãƒƒãƒ‰ã§ SQLite ã‚’ä½¿ã†å ´åˆã¯ 1 ã¤ã® SQLite Database ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã‚’è¤‡æ•°ã‚¹ãƒ¬ãƒƒãƒ‰ã§ä½¿ã„ã¾ã‚ã™ã“ã¨ã€ ã¨ã„ã†ã‚ˆã†ãªæƒ…å ±ãŒå¾—ã‚‰ã‚Œã¾ã—ãŸã€‚ ã‚ã¨ã¯å½“ãŸã‚Šå‰ã§ã™ãŒ ã€Œãƒˆãƒ©ãƒ³ã‚¶ã‚¯ã‚·ãƒ§ãƒ³ãŒã¡ã‚ƒã‚“ã¨é–‰ã˜ã‚‰ã‚Œã¦ã„ã‚‹ã‹ç¢ºèªã™ã‚‹ã“ã¨ã€ ã¨ã‹ã€‚ ã„ãã¤ã‹ã®è³ªå•ã‚„ãƒ–
yyamano 2015/02/05
SQLite
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[sqlite] SQLiteã®ãƒãƒƒã‚¯ãƒ»ãƒˆãƒ©ãƒ³ã‚¶ã‚¯ã‚·ãƒ§ãƒ³é–¢é€£ä»•æ§˜ã®æ•´ç†
ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ãƒ»ITé–¢é€£ã€‚çŸ¥ã£ã¦ã„ã‚‹ã¨ä¾¿åˆ©ãªã“ã¨ã€æ°—ã«ãªã£ã¦èª¿æŸ»ã—ãŸã“ã¨ã€ã¯ã¾ã£ãŸã‘ã©è§£æ±ºã§ããŸã“ã¨ãªã©ã€‚ SQLiteã¯å…±æœ‰ãƒãƒƒã‚¯ãƒ»æŽ’ä»–ãƒãƒƒã‚¯ã®ä»•çµ„ã¿ã‚’å‚™ãˆã¦ãŠã‚Šã€ãƒ—ãƒã‚»ã‚¹å†…ã®è¤‡æ•°ã‚¹ãƒ¬ãƒƒãƒ‰ã€ã ã‘ã§ãªãã€ãƒ—ãƒã‚»ã‚¹ã‚’ã¾ãŸãçŠ¶æ…‹ã§SQLãŒåŒæ™‚ã«ç™ºè¡Œã•ã‚Œã¦ã‚‚é©åˆ‡ã«å‡¦ç†ã•ã‚Œã¾ã™ã€‚ ãƒˆãƒ©ãƒ³ã‚¶ã‚¯ã‚·ãƒ§ãƒ³ã«è¤‡æ•°ã®ãƒ¢ãƒ¼ãƒ‰ãŒå˜åœ¨ã—ã€æŒ‡å®šã™ã‚‹ãƒ¢ãƒ¼ãƒ‰ã«ä¾ã£ã¦å–å¾—ã•ã‚Œã‚‹ãƒãƒƒã‚¯ãŒå¤‰ã‚ã‚Šã¾ã™ã€‚ã•ã‚‰ã«SQLã®å†…å®¹ã«ä¾å˜ã—ã¦ãƒãƒƒã‚¯çŠ¶æ…‹ãŒé·ç§»ã™ã‚‹ãŸã‚ã€è¤‡æ•°ãƒ—ãƒã‚»ã‚¹ãŒã‚¢ã‚¯ã‚»ã‚¹ã—ãŸã¨ãã®æŒ™å‹•ã‚’æ£ç¢ºã«æŠŠæ¡ã§ãã‚‹ã‚ˆã†ã€ä»•æ§˜ã‚’æ•´ç†ã—ã¦ã¿ã¾ã—ãŸã€‚ ï¼ˆæ–‡ä¸ã®ã€Œãƒ—ãƒã‚»ã‚¹ã€ã¯ã€æ£ç¢ºã«ã¯ã€Œãƒ—ãƒã‚»ã‚¹ã€ã‚‚ã—ãã¯ã‚¹ãƒ¬ãƒƒãƒ‰ã€ã‚’æ„å‘³ã—ã¾ã™ã€‚ï¼‰ DBã®ãƒãƒƒã‚¯çŠ¶æ…‹ã®ç¨®é¡žï¼š UNLOCKED ãƒãƒƒã‚¯ã•ã‚Œã¦ã„ãªã„çŠ¶æ…‹ã€‚èª°ã‚‚èªã¿æ›¸ãã—ã¦ã„ãªã„ã€‚DBã®åˆæœŸçŠ¶æ…‹ã€‚ SHARED readå¯ã€writeä¸å¯ãªçŠ¶æ…‹ã€‚è¤‡æ•°ãƒ—ãƒã‚»ã‚¹ãŒåŒæ™‚ã«SHAREDãƒãƒƒã‚¯ã‚’å–å¾—å¯èƒ½ã€‚è¤‡æ•°ãƒ—
yyamano 2015/02/05
SQLite
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File Locking And Concurrency In SQLite Version 3
An EXCLUSIVE lock is needed in order to write to the database file. Only one EXCLUSIVE lock is allowed on the file and no other locks of any kind are allowed to coexist with an EXCLUSIVE lock. In order to maximize concurrency, SQLite works to minimize the amount of time that EXCLUSIVE locks are held. The operating system interface layer understands and tracks all five locking states described abov
yyamano 2015/02/05
SQLite
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MySQLite: SQLiteãƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹ã‚’èªã¿æ›¸ãã™ã‚‹MySQLã‚¹ãƒˆãƒ¬ãƒ¼ã‚¸ã‚¨ãƒ³ã‚¸ãƒ³
yyamano 2014/02/19
MySQL

SQLite
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ä½“èª¿ä¸å…¨ã§ä¸€å›žä¼‘ã¿ - Backnumbers: Steps to Phantasien
2008-02-13 è¿‘æ³ ä½“èª¿ä¸å…¨ã§ä¸€å›žä¼‘ã¿. é€±æœ«ã®ã‚“ã ãã‚Œã¦å–‰ã‚’ã‚„ã‚‰ã‚Œã¦ã—ã¾ã£ãŸ. é…”ã£ã±ã‚‰ã„ã‚ˆããªã„... ç¦ç…™ã®ãƒ“ãƒ¼ãƒ«å±‹ãŒã‚ã£ã¦ã‚‚ã„ã„ã¨æ€ã†ã‚“ã ã‘ã©ãªã‚. ãã®ãƒ“ãƒ¼ãƒ«å±‹ã§çµ„ã¿è¾¼ã¿å±‹ã•ã‚“ã®å‹é”ã¨å®´ä¼šã‚’ã—ã¦ã„ã‚‹ã¨ãã«, sqlite ã„ã„ã‚ˆãã¨ã„ã†è©±ã«ãªã£ãŸ. web ã§ã® sqlite ã¯ rails ã‚„ php ã¨ä¸€ç·’ã«äººæ°—ãŒå‡ºãŸæ°—ãŒã™ã‚‹. çµ„ã¿è¾¼ã¿ç”¨é€”ã§ã‚‚äººæ°—. ãŸã¨ãˆã°ã‚²ãƒ¼ãƒ å±‹ã•ã‚“ã§ã¯ zlib ã¨ lua ã®æ¬¡ãã‚‰ã„ã«ä½¿ã‚ã‚Œã¦ã‚‹ã¨ã„ã†é¢¨èª¬ãŒã‚ã‚‹. (çœŸå½ä¸è©³.) ãƒ©ã‚¤ã‚»ãƒ³ã‚¹ãŒç·©ã„ã®ã‚‚ã„ã„. ç§ã‚‚ãªã‚“ã¨ãªããƒ•ã‚¡ãƒ³ã§, ãŸã¾ã«ã‚¦ã‚§ãƒ–ã‚µã‚¤ãƒˆã®æ–‡æ›¸ã‚’çœºã‚ãŸã‚Š è§¦ã£ã¦ã¿ãŸã‚Šã—ã¦ã„ã‚‹. ä»Šæ—¥ã‚‚ wiki ã‚’çœºã‚ã¦ã„ãŸã‚‰, ã„ã¤ã®ã¾ã«ã‹ FTS ã®ãƒãƒ¼ã‚¸ãƒ§ãƒ³ã¯ 3 ã«ãªã‚Š, ä»®æƒ³ãƒ†ãƒ¼ãƒ–ãƒ«ã«ç¶šã„ã¦ ä»®æƒ³ãƒ•ã‚¡ã‚¤ãƒ«ã‚·ã‚¹ãƒ†ãƒ ãªã‚“ã¦ã®ã‚‚ å®Ÿè£…ã•ã‚Œã¦ã„ãŸ. ã‚³ãƒ¼ãƒ‰ä»¥å¤–ã®è©±é¡Œã§ã¯ Mozilla ã¨
yyamano 2008/02/14
fsyncã®ãƒ–ãƒãƒƒã‚¯ã€symbianã€fossilè©±ã€‚

SQLite

Symbian OS
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Atomic Commit In SQLite
1. Introduction An important feature of transactional databases like SQLite is "atomic commit". Atomic commit means that either all database changes within a single transaction occur or none of them occur. With atomic commit, it is as if many different writes to different sections of the database file occur instantaneously and simultaneously. Real hardware serializes writes to mass storage, and wr
yyamano 2008/02/14
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Database

OS

SQLite
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