所以我有一个有趣的问题与System.Data.SQLite和使用多个事务。基本上,我有以下的代码失败:System.Data.SQLite不支持多个事务
using (IDbConnection connection1 = new SQLiteConnection("connectionstring"), connection2 = new SQLiteConnection("connectionstring"))
{
connection1.Open();
connection2.Open();
IDbTransaction transaction1 = connection1.BeginTransaction();
IDbTransaction transaction2 = connection2.BeginTransaction(); // Fails!
using(IDbCommand command = new SQLiteCommand())
{
command.Text = "CREATE TABLE artist(artistid int, artistname text);";
command.CommandType = CommandType.Text;
command.Connection = connection1;
command.ExecuteNonQuery();
}
using (IDbCommand command = new SQLiteCommand())
{
command.Text = "CREATE TABLE track(trackid int, trackname text);";
command.CommandType = CommandType.Text;
command.Connection = connection2;
command.ExecuteNonQuery();
}
transaction1.Commit();
transaction2.Commit();
}
从我读过似乎System.Data.SQLite应该支持嵌套和扩展连续交易。该代码与下面的异常7号线(其中第二交易申报)失败:
System.Data.SQLite.SQLiteException: The database file is locked
System.Data.SQLite.SQLite3.Step(SQLiteStatement stmt)
System.Data.SQLite.SQLiteDataReader.NextResult()
System.Data.SQLite.SQLiteDataReader..ctor(SQLiteCommand cmd, CommandBehavior behave)
System.Data.SQLite.SQLiteCommand.ExecuteReader(CommandBehavior behavior)
System.Data.SQLite.SQLiteCommand.ExecuteNonQuery()
System.Data.SQLite.SQLiteTransaction..ctor(SQLiteConnection connection, Boolean deferredLock)
System.Data.SQLite.SQLiteConnection.BeginDbTransaction(IsolationLevel isolationLevel)
System.Data.Common.DbConnection.System.Data.IDbConnection.BeginTransaction()
有谁知道问题是什么或如何解决这个问题?我觉得并发事务对于任何数据库系统都是必不可少的,所以必须有一些方法来做到这一点。
谢谢!
看起来非常非常紧密你的代码...在第一次使用声明你新'command1',但你参考'命令' – JonH
Typo,让我修复 –