OracleTransaction.Commit-Methode

Führt einen Commit der SQL-Datenbanktransaktion aus.

Namespace: System.Data.OracleClient
Assembly: System.Data.OracleClient (in system.data.oracleclient.dll)

Syntax

'Declaration
Public Overrides Sub Commit
'Usage
Dim instance As OracleTransaction

instance.Commit

public override void Commit ()

public:
virtual void Commit () override

public void Commit ()

public override function Commit ()

Ausnahmen

Ausnahmetyp	Bedingung
Exception	Fehler beim Ausführen eines Commits für die Transaktion.
InvalidOperationException	Es wurde bereits ein Commit bzw. ein Rollback für die Transaktion ausgeführt. - oder - Die Verbindung ist unterbrochen.

Beispiel

Im folgenden Beispiel werden eine OracleConnection und eine OracleTransaction erstellt. Darüber hinaus wird die Verwendung der Methoden BeginTransaction, Commit und Rollback veranschaulicht.

Public Sub RunOracleTransaction(ByVal connectionString As String)
    Using connection As New OracleConnection(connectionString)
        connection.Open()

        Dim command As OracleCommand = connection.CreateCommand()
        Dim transaction As OracleTransaction

        ' Start a local transaction
        transaction = connection.BeginTransaction(IsolationLevel.ReadCommitted)
        ' Assign transaction object for a pending local transaction
        command.Transaction = transaction

        Try
            command.CommandText = _
                "INSERT INTO Dept (DeptNo, Dname, Loc) values (50, 'TECHNOLOGY', 'DENVER')"
            command.ExecuteNonQuery()
            command.CommandText = _
                "INSERT INTO Dept (DeptNo, Dname, Loc) values (60, 'ENGINEERING', 'KANSAS CITY')"
            command.ExecuteNonQuery()
            transaction.Commit()
            Console.WriteLine("Both records are written to database.")
        Catch e As Exception
            transaction.Rollback()
            Console.WriteLine(e.ToString())
            Console.WriteLine("Neither record was written to database.")
        End Try
    End Using
End Sub

public void RunOracleTransaction(string connectionString)
{
    using (OracleConnection connection = new OracleConnection(connectionString))
    {
        connection.Open();

        OracleCommand command = connection.CreateCommand();
        OracleTransaction transaction;

        // Start a local transaction
        transaction = connection.BeginTransaction(IsolationLevel.ReadCommitted);
        // Assign transaction object for a pending local transaction
        command.Transaction = transaction;

        try
        {
            command.CommandText = 
                "INSERT INTO Dept (DeptNo, Dname, Loc) values (50, 'TECHNOLOGY', 'DENVER')";
            command.ExecuteNonQuery();
            command.CommandText = 
                "INSERT INTO Dept (DeptNo, Dname, Loc) values (60, 'ENGINEERING', 'KANSAS CITY')";
            command.ExecuteNonQuery();
            transaction.Commit();
            Console.WriteLine("Both records are written to database.");
        }
        catch (Exception e)
        {
            transaction.Rollback();
            Console.WriteLine(e.ToString());
            Console.WriteLine("Neither record was written to database.");
        }
    }
}

using System;
using System.Data;
using System.Data.OracleClient;

class Class1
{
    static void Main()
    {
    }

    public void RunOracleTransaction(string connectionString)
    {
        using (OracleConnection connection = new OracleConnection(connectionString))
        {
            connection.Open();

            OracleCommand command = connection.CreateCommand();
            OracleTransaction transaction;

            // Start a local transaction
            transaction = connection.BeginTransaction(IsolationLevel.ReadCommitted);
            // Assign transaction object for a pending local transaction
            command.Transaction = transaction;

            try
            {
                command.CommandText = 
                    "INSERT INTO Dept (DeptNo, Dname, Loc) values (50, 'TECHNOLOGY', 'DENVER')";
                command.ExecuteNonQuery();
                command.CommandText = 
                    "INSERT INTO Dept (DeptNo, Dname, Loc) values (60, 'ENGINEERING', 'KANSAS CITY')";
                command.ExecuteNonQuery();
                transaction.Commit();
                Console.WriteLine("Both records are written to database.");
            }
            catch (Exception e)
            {
                transaction.Rollback();
                Console.WriteLine(e.ToString());
                Console.WriteLine("Neither record was written to database.");
            }
        }
    }

Plattformen

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

.NET Framework unterstützt nicht alle Versionen sämtlicher Plattformen. Eine Liste der unterstützten Versionen finden Sie unter Systemanforderungen.

Versionsinformationen

.NET Framework

Unterstützt in: 2.0, 1.1

Siehe auch

Referenz

OracleTransaction-Klasse
OracleTransaction-Member
System.Data.OracleClient-Namespace
BeginTransaction
Rollback