zoukankan      html  css  js  c++  java
  • 使用SQLite数据库时注意多进程并发的错误处理

    sqlite3.OperationalError

    sqlite3.connect(database[, timeout, detect_types, isolation_level, check_same_thread, factory, cached_statements])

    Opens a connection to the SQLite database file database. You can use ":memory:" to open a database connection to a database that resides in RAM instead of on disk.

    When a database is accessed by multiple connections, and one of the processes modifies the database, the SQLite database is locked until that transaction is committed. The timeout parameter specifies how long the connection should wait for the lock to go away until raising an exception. The default for the timeout parameter is 5.0 (five seconds).

    貌似多线程情况下,可以设置

    check_same_thread 并设置串行模式,解决并发的问题  但自己没测过,只是参考别人的
    本文首发于博客园,任何其他站点均为爬虫或转载,爬虫最无耻。
  • 相关阅读:
    UVA
    codeforces #371div2 B
    POJ-3278 Catch That Cow
    巴士博弈
    权势二进制
    HDU
    SQL 函数
    SQL 查询语句×45
    SQL 触发器
    SQL 连接查询
  • 原文地址:https://www.cnblogs.com/codeape/p/2825885.html
Copyright © 2011-2022 走看看