What is the key aspect of Direct Path loading in Oracle data pump?

The key aspect of Direct Path loading in Oracle Data Pump is that it writes directly to the datafiles. This method bypasses many of the conventional data loading processes, allowing for faster and more efficient data transfer. In Direct Path loading, data is written directly to the tablespace of the Oracle database, significantly improving performance because it avoids the overhead of logging and can utilize a more efficient block format.

This method is particularly effective for loading large amounts of data, as it can take advantage of parallel processing and keep the database from being bogged down by additional operations that are generally part of standard load processes. By writing directly to the datafiles, it minimizes the amount of intermediary processing that needs to occur, which is essential for achieving high throughput rates when handling large datasets.

The other choices do offer benefits in different contexts but do not emphasize the main feature of Direct Path loading. For instance, using external tables might be involved in other types of data loading but does not specifically pertain to the Direct Path method. In-memory operations may improve performance in some scenarios but do not characterize the essence of Direct Path loading, while requiring additional security credentials is unrelated to the mechanism of data loading itself. Thus, writing directly to the datafiles remains the defining feature of Direct