Question

我试图在Oracle数据库中的表上运行插入查询。以下是我正在进行的测试。

首先锁定我想从SQL Developer会话中插入的表
```
lock table RANDOM_TABLE in exclusive mode nowait
```
尝试使用DbCommand.ExecuteNonQuery
我已将CommandTimeout属性设置为60秒

即使在完成60秒后控件也没有返回，但是当我解锁表时，它正在执行插入操作并且还会抛出异常。

我认为，当命令超时到期时，.NET正在抛出异常，但是在表解锁之前，控制没有从本机代码返回。在这种情况下如何避免无限期等待？

 Public Shared Function ExecuteNonQuery(ByVal ConnectionString As String, ByVal factory As DbProviderFactory, ByVal sql As String) As Integer

    Dim rowsAffected As Integer = -1

    Using conn As DbConnection = factory.CreateConnection
        conn.ConnectionString = ConnectionString
        conn.Open()
        If conn.State.Equals(ConnectionState.Open) Then

            Try
                'This works
                Dim command As DbCommand = conn.CreateCommand
                command.CommandText = sql
                command.CommandType = CommandType.Text
                command.CommandTimeout = 60

                '**********This blocks and never returns.
                rowsAffected = command.ExecuteNonQuery()
            Catch ex As Exception
                Debug.Print(ex.Message)
            End Try

        End If
    End Using
    Return rowsAffected
End Function

DbCommand.ExecuteNonQuery无限期挂起

0 个答案: