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    <p>It looks like you failed to link the command with the transaction you've created. Instead of:</p> <pre><code>using (SQLiteCommand command = conn.CreateCommand()) </code></pre> <p>You should use:</p> <pre><code>using (SQLiteCommand command = new SQLiteCommand("&lt;INSERT statement here&gt;", conn, trans)) </code></pre> <p>Or you can set its Transaction property after its construction.</p> <p>While we are at it - your handling of failures is incorrect:</p> <p>The command's ExecuteNonQuery method can also fail and you are not really protected. You should change the code to something like:</p> <pre><code> public void Commit() { using (SQLiteConnection conn = new SQLiteConnection(this.connString)) { conn.Open(); SQLiteTransaction trans = conn.BeginTransaction(); try { using (SQLiteCommand command = conn.CreateCommand()) { command.Transaction = trans; // Now the command is linked to the transaction and don't try to create a new one (which is probably why your database gets locked) command.CommandText = "INSERT OR IGNORE INTO [MY_TABLE] (col1, col2) VALUES (?,?)"; command.Parameters.Add(this.col1Param); command.Parameters.Add(this.col2Param); foreach (Data o in this.dataTemp) { this.col1Param.Value = o.Col1Prop; this. col2Param.Value = o.Col2Prop; command.ExecuteNonQuery(); } } trans.Commit(); } catch (SQLiteException ex) { // You need to rollback in case something wrong happened in command.ExecuteNonQuery() ... trans.Rollback(); throw; } } } </code></pre> <p>Another thing is that you don't need to cache anything in memory. You can depend on SQLite journaling mechanism for storing incomplete transaction state.</p>
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    1. PODatabase file is inexplicably locked during SQLite commit
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    1. USAndrew Barber
    1. USLiron Levi
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      1. VTUpMod
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    1. COGreat I'll need some time to digest all of this and try it out but thanks for the input!
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      1. USBrian Sweeney
    2. COAlso, I'm glad you mention caching. Originally I was doing it the way you suggest, but moved away from that since I was concerned that it was contributing to this commit failure mess. Once I get it working I'll go back and post some proper code samples...
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      1. USBrian Sweeney
    3. COwell i tried both methods - constructing by passing in the transaction and setting the property post-hoc. neither has alleviated my problem. thanks for the suggestions tho!
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