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Potential timeouts that may occur if a long-running query in one thread Therefore your own responsibility in a multi-threaded environment to handle Understand again that SQLite has no fine-grained locking mechanisms. You May NOT pass a SQLiteCommand, SQLiteDataReader, SQLiteDataAdapter orĪny other SQLite provider class except a cloned SQLiteConnection to another.Perfectly acceptable and will behave predictably.Ĭall methods or properties or otherwise reference any SQLite provider classes Multiple connections on multiple threads to the same database file are SQLiteConnection and subsequent objects for accessing a database. Once passed, the other thread becomes the new owner of theĬloned connection, and the original thread must not keep a reference to theĬreate multiple threads, and those threads can create their own Here are the restrictions:Ĭlone() a SQLiteConnection object in one thread and pass the cloned object toĪnother thread. Multi-threading in SQLite must be done carefully. Transaction, all readers on other connections will be blocked until the You want to write to the database! If you hold open an "immediate" Opening a transaction is considered a write operation, so only use them when That transaction was created before or after the command.Ī SQLiteCommand object can be re-assigned a new SQLiteConnection objectĪs long as no DataReaders are active on the command. In theĬase of transactions, any SQLiteCommand created on a connection will (whenĮxecuted) automatically join a transaction in progress, regardless of whether Hierarchical DataReaders are not supported. If any of the downloadable packages are obtained elsewhere, it. This page and the associated NuGet packages are the only official distribution points for these downloadable packages. sources, binaries, etc) for the current release version of the official '' project. SQLite.NET provider will use the database schema information it can glean toĮnforce type-ness, but it is an inexact science. This page contains all supported downloadable packages (e.g. NET-speak) Int64, Double, String and Blob. SQLite is inherently type-less, and only understands a few basic datatypes Internally if a database is locked, up to the CommandTimeout property of the The SQLite.NET provider attempts to retry When a connection locks the database for writing, no other connection or process may read or write to the database until the write operation is complete. Support for row-level or table-level locks. Limitations of this ADO.NET SQLite Data ProviderĪs providers go, this one doesn't have many restrictions.