php 赶上SQLite错误“数据库已锁定”这是一个偶然性问题。sqlite规范明确指出，在多进程（PHP就是这样，如果多个请求同时命中文件）或多线程环境中，如果两个SELECT查询同时命中同一个表，“后面”的查询将得到此错误。不幸的是，在PHP中处理这个问题时，您没有太多的选择。我甚至不认为您可以在请求结束时结束的环境中启用共享缓存，
import win.ui; import fsys.dlg; import sqlite import string; //打开数据库连接 var sqlConn = sqlite("/data.db") var dbtable = sqlConn.getTable("SELECT COUNT(*) FROM sqlite_master where type='table' and name='url';") //遍列所有行记录 if( not tonumber( dbtable[1]["COUNT(*)"]...
SQLITE_ERROR SQLite error (or database not found). SQLITE_INTERNAL An internal SQLite error. SQLITE_PERM Access permission denied. SQLITE_ABORT Callback routine aborted. SQLITE_BUSY The database file is currently locked. SQLITE_LOCKED A table within the database is locked. SQLITE_NOMEM SQLite ...
if(stripos($e->getMessage(),'DATABASE IS LOCKED') !==false) { // This should be specific to SQLite, sleep for 0.25 seconds // and try again. We do have to commit the open transaction first though $conn->commit(); usleep(250000); } else { $conn->rollBack(); throw$e; } } ...
When set to 0, busy handlers will be disabled and SQLite will return immediately with a SQLITE_BUSY status code if another process/thread has the database locked for an update. PHP sets the default busy timeout to be 60 seconds when the database is opened. Note: There are one ...
/* 错误信息代码函数 */function error_code($code, $line_num, $debug=DEBUG){ if ($code<-6 || $code>-1) { return false; } switch($code) { case -1: $errmsg = "Create database file error."; break; case -2: $errmsg = "Open sqlite database file failed."; break; case -3: ...
SQLite version 3.2.2 Enter ".help" for instructions sqlite> # SQLite的提示符,如果想查看命令帮助输入 .help,在sqlite中所有系统命令都是 . 开头的: sqlite> .help .databases List names and files of attached databases .dump ?TABLE? ... Dump the database in an SQL text format ...
New Profile Database System One of the big challenges for STAAD users in the past has been the...
if(stripos($e->getMessage(),'DATABASE IS LOCKED') !==false) { // This should be specific to SQLite, sleep for 0.25 seconds // and try again. We do have to commit the open transaction first though $conn->commit(); usleep(250000); ...
query The SQL query to execute (typically an INSERT, UPDATE, or DELETE query). 返回值¶ Returnstrueif the query succeeded,falseon failure. 示例¶ 示例#1SQLite3::exec()example <?php $db= newSQLite3('mysqlitedb.db'); $db->exec('CREATE TABLE bar (bar TEXT)'); ...