huge transfer with OleDbCommand

I have a strange problem. I have a .sql file that containts 3000 insert commands. I read every line and execute the command on the database. Till there there is no problem, it reads everything and executes everything. But if i watch to my datatransfer over the network, i have send and received 260Mb. That couldn't be normal. I work with OleDbCommand.ExecuteNonQuery, and maybe there will be the problem? this is my code: private OleDbConnection myConn; public create_database() { string connStr = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=//cpc-srv/datanl/testmap-stage/bank_database.mdb"; myConn = new OleDbConnection(connStr); myConn.Open(); } protected override void Dispose( bool disposing ) { myConn.Close(); } public string doe(string commando) { OleDbCommand comm = new OleDbCommand(commando,myConn); comm.ExecuteNonQuery(); } private void start(object sender, System.EventArgs e) { StreamReader objReader = new StreamReader("c:\\datab.sql"); string sLine=""; while (sLine != null) { sLine = objReader.ReadLine(); if (sLine != null && sLine!="") doe(sLine); } objReader.Close(); }