BeginTransaction(IsolationLevel) Method
Begins a database transaction with the specified isolation level.
Parameters
- il
Return Value
An object representing the new transaction.
The following example creates a
OracleConnection and a
OracleTransaction. It also demonstrates how to use the
BeginTransaction(),
Commit, and
Rollback methods.
public void RunOracleTransaction(string myConnString)
{
OracleConnection myConnection = new OracleConnection(myConnString);
myConnection.Open();
OracleCommand myCommand = new OracleCommand();
myCommand.Connection = myConnection;
OracleTransaction myTrans;
// Start a local transaction
myTrans = myConnection.BeginTransaction(IsolationLevel.ReadCommitted);
// Assign transaction object for a pending local transaction
myCommand.Transaction = myTrans;
try
{
myCommand.CommandText = "INSERT INTO Dept(DeptNo, DName) Values(50, 'DEVELOPMENT')";
myCommand.ExecuteNonQuery();
myCommand.CommandText = "INSERT INTO Dept(DeptNo, DName) Values(60, 'PRODUCTION')";
myCommand.ExecuteNonQuery();
myTrans.Commit();
Console.WriteLine("Both records are written to database.");
}
catch(Exception e)
{
myTrans.Rollback();
Console.WriteLine(e.ToString());
Console.WriteLine("Neither record was written to database.");
}
finally
{
myConnection.Close();
}
}
Public Sub RunOracleTransaction(myConnString As String)
Dim myConnection As New OracleConnection(myConnString)
myConnection.Open()
Dim myCommand As New OracleCommand()
myCommand.Connection = myConnection
Dim myTrans As OracleTransaction
' Start a local transaction
myTrans = myConnection.BeginTransaction(IsolationLevel.ReadCommitted)
' Assign transaction object for a pending local transaction
myCommand.Transaction = myTrans
Try
myCommand.CommandText = "INSERT INTO Dept(DeptNo, DName) Values(50, 'DEVELOPMENT')"
myCommand.ExecuteNonQuery()
myCommand.CommandText = "INSERT INTO Dept(DeptNo, DName) Values(60, 'PRODUCTION')"
myCommand.ExecuteNonQuery()
myTrans.Commit()
Console.WriteLine("Both records are written to database.")
Catch e As Exception
myTrans.Rollback()
Console.WriteLine(e.ToString())
Console.WriteLine("Neither record was written to database.")
Finally
myConnection.Close()
End Try
End Sub
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2