问OracleBulkCopy内存泄漏(OutOfMemory异常)

EN

using (OracleBulkCopy bulkCopy = new OracleBulkCopy(VMSDATAConnectionString))
            {
                try
                {
                    foreach (OracleBulkCopyColumnMapping columnMapping in columnMappings)
                        bulkCopy.ColumnMappings.Add(columnMapping);

                    bulkCopy.DestinationTableName = destTableName;
                    //bulkCopy.BatchSize = dataTable.Rows.Count;
                    //bulkCopy.BulkCopyTimeout = 100;                   
                    int defaultSize = 5000;
                    int.TryParse(ConfigurationManager.AppSettings["OracleBulkCopyBatchSize"], out defaultSize);
                    bulkCopy.BatchSize = defaultSize;
                    int timeOut = 100;
                    int.TryParse(ConfigurationManager.AppSettings["OracleBulkCopyTimeout"], out timeOut);
                    bulkCopy.BulkCopyTimeout = timeOut;
                    Console.WriteLine("Bulk insert from {0} to {1} started at: {2}\r\nBatchSize : {3}, BulkCopyTimeout : {4} ", dataTable.TableName, destTableName, DateTime.Now.ToString("HH:mm:ss"), bulkCopy.BatchSize.ToString(), bulkCopy.BulkCopyTimeout.ToString());
                    bulkCopy.WriteToServer(dataTable);
                    Console.WriteLine("Bulk insert from {0} to {1} finished at: {2}", dataTable.TableName, destTableName, DateTime.Now.ToString("HH:mm:ss"));
                }
                catch (Exception ex)
                {
                    Console.WriteLine("Error happened during bulk copy from {0} to {1}\r\nBatchSize : {2}, BulkCopyTimeout : {3}\r\n Error message {4}", dataTable.TableName, destTableName, bulkCopy.BatchSize.ToString(), bulkCopy.BulkCopyTimeout.ToString(), ex.ToString());
                    bulkCopy.Close();
                    bulkCopy.Dispose();
                }
            }