Question

Could anybody explain what is the difference between OracleBulkCopyOptions.Default and OracleBulkCopyOptions.UseInternalTransaction & how i can rollback all the record if any bulk insert error happens in between.

I am using OracleBulkCopy to bulk insert(records range varies from 100000 to 500000 ) to Oracle data base. My requirement is either all the records should insert into db or none of the record should insert into db(roll back all records). I am giving 25000 as BatchSize & 150 seconds as BulkCopyTimeout. Below is my current code block.

public bool WriteExcelDataToServerRouteOne(DataTable excelTable)
        {
            var columnMapping = from table in excelTable.Columns.Cast<DataColumn>() select new OracleBulkCopyColumnMapping(table.ColumnName, table.ColumnName);
            using (var bulkcopy = new OracleBulkCopy(ConnectionString, OracleBulkCopyOptions.Default))
            {
                bulkcopy.DestinationTableName = DestinationTable;
                foreach (var mapping in columnMapping)
                    bulkcopy.ColumnMappings.Add(mapping);
                bulkcopy.BulkCopyTimeout = TimeOut.Value;
                bulkcopy.BatchSize = BatchSize.Value;
                bulkcopy.WriteToServer(excelTable);
            }
            return true;
        }

Answer 1

OracleBulkCopy doesn’t support transaction for all the records, it only support transaction for batches if UseInternalTransaction is specified.

From OracleBulkCopy Class

• If BatchSize > 0 and the UseInternalTransaction bulk copy option is specified, each batch of the bulk copy operation occurs within a
  transaction. If the connection used to perform the bulk copy
  operation is already part of a transaction, an
  InvalidOperationException exception is raised.
• If BatchSize > 0 and the UseInternalTransaction option is not specified, rows are sent to the database in batches of size BatchSize,
  but no transaction-related action is taken.

For your question:

Could anybody explain what is the difference between
OracleBulkCopyOptions.Default and
OracleBulkCopyOptions.UseInternalTransaction

Default: Doesn’t uses transaction for batches.
UseInternalTransaction: Supports transaction for batches if the batch size is greater than 0.

See:
OracleBulkCopyOptions Enumeration