I am trying to use data adapter to insert records into a table. but for some reason, no records get inserted. The data base is oracle.

DataGateway aDataGateway = new DataGateway();
OracleConnection aMbsfas91Connection = aDataGateway.GetMbsFas91Connection();
aMbsfas91Connection.Open();
OracleDataAdapter adp = new OracleDataAdapter(sqlDataAdapter, aMbsfas91Connection);
OracleCommand command = new OracleCommand(ssqlInsert, aMbsfas91Connection);command.CommandType = CommandType.Text;
command.Parameters.Add("CUSIP", OracleType.VarChar, 20, "CUSIP");
command.Parameters.Add("SEC_ID", OracleType.VarChar, 20, "SEC_ID");

adp.InsertCommand = command;
adp.Fill(aDataTableMbsDeals);
adp.Update(aDataTableMbsDeals);
aMbsfas91Connection.Close();

No errors show up but the data doesn't get updated