python data_error ai_generated true

SQLAlchemy 操作错误：数据库被锁定。

sqlalchemy.exc.OperationalError: (sqlite3.OperationalError) database is locked

ID: python/flask-sqlalchemy-database-lock

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80%修复率
86%置信度
0证据数
2024-09-01首次发现

版本兼容性

版本状态引入弃用备注
3.x active — — —

根因分析

由于 Flask 应用中的并发写入或未提交事务，SQLite 数据库被锁定。

English

SQLite database locked due to concurrent writes or uncommitted transactions in Flask app.

generic

解决方案

  1. 80% 成功率 
    Set SQLite timeout: engine = create_engine('sqlite:///app.db', connect_args={'timeout': 30})
  2. 90% 成功率 
    Use WAL mode: with engine.connect() as conn:
    conn.execute("PRAGMA journal_mode=WAL")

无效尝试

常见但无效的做法:

  1. 70% 失败

    Timeout only waits for lock release; if transaction never commits, it still fails.

  2. 80% 失败

    Uncommitted sessions hold locks; need explicit commit or rollback.