Troubleshooting "Python SQLite: database is locked" Error
Troubleshooting "Python SQLite: database is locked" Error
The "database is locked" error in Python SQLite indicates that multiple processes or threads are attempting to write to the database simultaneously. SQLite only supports one writer at a time. Solutions include ensuring exclusive write access, implementing proper connection management by closing connections and cursors after use to release locks. Using connection pooling can help reuse connections efficiently. If multiple threads are writing, employ Python's `threading.Lock` to serialize write operations. Increasing the `timeout` parameter in `sqlite3.connect()` might allow brief lock contentions to resolve, but it's not a fix for concurrency issues. Examine your code for unclosed connections or long-running write transactions that may be holding locks. If using a network drive, performance issues can also contribute to lock contention.
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