dotConnect for Oracle Documentation
Devart.Data.Oracle Namespace / OracleConnection Class / BeginTransaction Method / BeginTransaction() Method
Example

In This Topic
    BeginTransaction() Method
    In This Topic
    Begins a database transaction.
    Syntax
    'Declaration
     
    Public Overloads Shadows Function BeginTransaction() As OracleTransaction
    public new OracleTransaction BeginTransaction()

    Return Value

    An object representing the new transaction.
    Remarks
    To commit or roll back the transaction, you must explicitly use the Commit or Rollback methods.
    Example
    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();
      // Assign transaction object for a pending local transaction
      myCommand.Transaction = myTrans;
    
      try
      {
        myCommand.CommandText = "INSERT INTO Test.Dept(DeptNo, DName) Values(50, 'DEVELOPMENT')";
        myCommand.ExecuteNonQuery();
        myCommand.CommandText = "INSERT INTO Test.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()
      ' Assign transaction object for a pending local transaction
      myCommand.Transaction = myTrans
    
      Try
        myCommand.CommandText = "INSERT INTO Test.Dept(DeptNo, DName) Values(50, 'DEVELOPMENT')"
        myCommand.ExecuteNonQuery()
        myCommand.CommandText = "INSERT INTO Test.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
    Requirements

    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

    See Also