transaction not available?

Q:

When i call the following method:

con.Begin_Transaction();

Method implementation:

 public void Begin_Transaction()
        {
            if (this.connection.State == ConnectionState.Open)
            {
        开发者_运维百科        this.current_trans = this.connection.BeginTransaction(IsolationLevel.Serializable);
            }
        }

Use the following Classes:

         DbProviderFactory providerFactory;
         IfxConnection connection;
         IfxCommand command;
         IfxTransaction m_current_trans;
         IfxParameter param;
         IfxDataReader DR;

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I get the following exception:

IBM.Data.Informix.If Exception: ERROR [HY000] [Informix .NET provider][Informix]Transaction not available

What is the problem here please? thanks in advance.

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For Transactions to work the database should be logging enabled, Please check if its done for your case, used in cases since it would be needed to undo changes