修复SQLite-database disk image is malformed

转自：http://www.cnblogs.com/adinet/archive/2011/11/03/2233858.html

修复SQLite-database disk image is malformed

运行某些SQL语句出错database disk image is malformed

说明SQLite的内部数据格式,已经损坏

sqlite> PRAGMA integrity_check;

*** in database main ***

Main freelist: 3 of 3 pages missing from overflow list starting at 0

排除磁盘空间不够的原因

修复步骤

$ sqlite3 backup.sqlite

sqlite> .output “_temp.tmp”

sqlite> .dump

sqlite> .quit

$ sqlite3 new.sqlite

sqlite> .read “_temp.tmp”

sqlite> .quit

就将错误的backup.sqlite修复为new.sqlite了

另一种更快的修复方法

$echo “.dump” | sqlite3 old.db | sqlite3 new.db

直接将 old.db 修复为 new.db

或者

sqlite3 newsfeed.db .dump > newsfeed.sql

sqlite3 newsfeed.db < newsfeed.sql

请参考  http://www.sqlite.org/faq.html#q21

http://www.sqlite.org/sqlite.html

PHP使用popen调用sqlite shell来实现修复

$handle = popen(“mv ../backup.sqlite bad.sqlite && sqlite3 bad.sqlite .dump | sqlite3 good.sqlite && mv good.sqlite ../backup.sqlite”, ‘r’);

$read = fread($handle, 4096);

echo $read;

pclose($handle);

 

压缩

sqlite3 my.sqlite 'VACUUM;'

 

原文:http://zhiwei.li/text/2010/08/%e4%bf%ae%e5%a4%8dsqlite-database-disk-image-is-malformed/