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ionis id:ionis

mysqlã¨innodbã«é–¢ã™ã‚‹ionisã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (4)

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ionis 2015/10/13
mysql

ãƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹

DB

innodb

MVCC
ãƒªãƒ³ã‚¯
MySQL(InnoDB) ã§ "Index column size too large. The maximum column size is 767 bytes." ã„ã‚ã‚Œã‚‹ã¨ãã®å¯¾ç– - ã‹ã¿ã½ã‚ãƒ¼ã‚‹
tl;dr: MySQL 5.5.14ä»¥é™ã ã¨innodb_large_prefixã‚ªãƒ—ã‚·ãƒ§ãƒ³ã§3072ãƒã‚¤ãƒˆã¾ã§ã‚¤ãƒ³ãƒ‡ãƒƒã‚¯ã‚¹å¼µã‚Œã‚‹ MySQL(InnoDB)ã§ã¯ã€ã²ã¨ã¤ã®ã‚«ãƒ©ãƒ ã®ã‚ãƒ¼ãƒ—ãƒ¬ãƒ•ã‚£ãƒƒã‚¯ã‚¹ã®æœ€å¤§å€¤ãŒ767ãƒã‚¤ãƒˆã¨ã„ã†åˆ¶é™ãŒã‚ã‚‹ã®ã§ã€ã¤ã„ã†ã£ã‹ã‚Šã—ã¦ Index column size too large. The maximum column size is 767 bytes. ã¨ã‹ Specified key was too long; max key length is 767 bytes ã¨ã„ã£ãŸã‚¨ãƒ©ãƒ¼ã‚’è¦‹ãŸã“ã¨ã‚ã‚‹äººã¯å¤šã„ã®ã§ã¯ãªã„ã‹ã¨æ€ã„ã¾ã™ã€‚ ã‚ˆãã‚ã‚‹ã‚±ãƒ¼ã‚¹ã ã¨ã€varchar(256)ä»¥ä¸Šã®utf8ãªã‚«ãƒ©ãƒ ã«ã‚¤ãƒ³ãƒ‡ãƒƒã‚¯ã‚¹ã‚’å¼µã‚ã†ã¨ã™ã‚‹ã¨ã“ã®ã‚¨ãƒ©ãƒ¼ã¨ã”å¯¾é¢ã§ãã¾ã™ã€‚ CREATE TABLE t (c varchar(256), index (c)); ERROR
ionis 2014/07/16
mysql

innodb
ãƒªãƒ³ã‚¯
MySQL InnoDB Pluginã®ãƒ‡ãƒ¼ã‚¿åœ§ç¸®æ©Ÿèƒ½ - SH2ã®æ—¥è¨˜
InnoDB Pluginã®é¢ç™½ã„æ©Ÿèƒ½ã®ä¸€ã¤ã«ã€ãƒ‡ãƒ¼ã‚¿åœ§ç¸®æ©Ÿèƒ½ãŒã‚ã‚Šã¾ã™ã€‚ä»Šå›žã¯ãã®ä»•çµ„ã¿ã¨åŠ¹æžœã«ã¤ã„ã¦è¦‹ã¦ã„ããŸã„ã¨æ€ã„ã¾ã™ã€‚ã¾ãšã¯ã‚°ãƒ©ãƒ•ã‚’ã”è¦§ãã ã•ã„ã€‚ ã“ã‚Œã¯Wikipediaæ—¥æœ¬èªžç‰ˆã®ãƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹ã‚’ãƒ€ã‚¦ãƒ³ãƒãƒ¼ãƒ‰ã—ã€è¨˜äº‹æœ¬æ–‡ã®æ ¼ç´ã•ã‚Œã¦ã„ã‚‹textãƒ†ãƒ¼ãƒ–ãƒ«ã‚’MySQL 5.1ï¼‹InnoDB Plugin 1.0ã®ç’°å¢ƒã«ãƒãƒ¼ãƒ‰ã—ãŸã‚‚ã®ã§ã™ã€‚ å…ƒãƒ†ã‚ã‚¹ãƒˆï¼šä»Šå›žåˆ©ç”¨ã—ãŸãƒ‡ãƒ¼ã‚¿ã¯2009/06/21ç‰ˆã®ã‚‚ã®ã§ã™(jawiki-20090621-pages-articles.xml.bz2)ã€‚å…ƒãƒ†ã‚ã‚¹ãƒˆã¯ã“ã“ã‹ã‚‰Xml2sqlã‚’ç”¨ã„ã¦ã‚¿ãƒ–åŒºåˆ‡ã‚Šãƒ†ã‚ã‚¹ãƒˆã‚’å–ã‚Šå‡ºã—ãŸã‚‚ã®ã‚’ç”¨ã„ã¦ã„ã¾ã™ã€‚ã“ã®ãƒ•ã‚¡ã‚¤ãƒ«ã«ã¯1,167,411ä»¶ã®è¨˜äº‹ãŒæ ¼ç´ã•ã‚Œã¦ãŠã‚Šã€å®¹é‡ã¯3,436MBã¨ãªã£ã¦ã„ã¾ã™ã€‚ å…ƒãƒ†ã‚ã‚¹ãƒˆ gzipï¼šå…ƒãƒ†ã‚ã‚¹ãƒˆã‚’gzipã‚³ãƒžãƒ³ãƒ‰ã§åœ§ç¸®ã—ãŸã‚‚ã®ã§ã™ã€‚ MyISAMï¼šè¨˜äº‹ã‚’MyISAMã®ãƒ†ãƒ¼ãƒ–ãƒ«ã«
ionis 2014/07/16
mysql

DB

ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°

innodb
ãƒªãƒ³ã‚¯
ãƒ¡ãƒ¢ã®æ—¥ã€…(2006-02-15)
â– [db] MySQLï¼ˆ4.0.26ï¼‰ãŒèµ·å‹•ã—ãªããªã£ãŸ my.cnfã«InnoDBã«é–¢ã™ã‚‹è¨å®šé …ç›®ã‚’è¿½åŠ ã—ãŸã‚‰èµ·å‹•ã—ãªããªã£ã¦ã—ã¾ã£ãŸã€‚ã‚¨ãƒ©ãƒ¼ãƒã‚°ã‚’è¦‹ã‚‹ã¨ InnoDB: Error: log file /xxxx/ib_logfile0 is of different size 0 5242880 bytes InnoDB: than specified in the .cnf file 0 67108864 bytes! ã¨ã‚ã‚Šã€ib_logfile0ã¨ã„ã†ãƒ•ã‚¡ã‚¤ãƒ«ã®ã‚µã‚¤ã‚ºãŒmy.cnfã«ã‚ã‚‹è¨å®šå€¤ã¨ç•°ãªã‚‹ã®ã§èµ·å‹•ã§ããªã„ã‚ˆã†ã ã€‚è¨å®šå€¤ã‚’å¤‰ãˆãŸã®ã ã‹ã‚‰ã‚µã‚¤ã‚ºãŒé•ã†ã®ã¯å½“ãŸã‚Šå‰ã ã€‚ æ–°ã—ã„è¨å®šå€¤ã‚’åæ˜ ã•ã›ã‚‹æ–¹æ³•ãŒã‚ã‚‹ã®ã‹ã¨æ€ã£ã¦èª¿ã¹ãŸãŒåˆ†ã‹ã‚‰ãªã‹ã£ãŸã€‚InnoDBã®ãƒã‚°ãƒ•ã‚¡ã‚¤ãƒ«ã®ã‚µã‚¤ã‚ºã¯é€”ä¸ã§å¤‰ãˆã‚‹ã“ã¨ãŒã§ããªã„ã®ã ã‚ã†ã‹ã€‚ MySQLã®ãƒ•ã‚©ãƒ¼ãƒ©ãƒ ã«åŒã˜ã‚ˆã†ãªã‚¨ãƒ©ãƒ¼ã¸ã®å›žç”ãŒã‚ã£ã¦ã€
ionis 2009/07/24
my.cnfã«InnoDBã«é–¢ã™ã‚‹è¨å®šé …ç›®ã‚’è¿½åŠ ã—ãŸæ™‚èµ·å‹•ã—ãªã„äº‹ãŒã‚ã‚‹ã‚‰ã—ãƒ¼

mysql

innodb
ãƒªãƒ³ã‚¯
1