When you use bulk loading, the Data Integration Service bypasses the database log, which speeds performance.
Consider the following solutions to reduce bulk load bottlenecks:
Configure bulk loading in the write properties for a data object.
You can use bulk loading to improve the performance of a mapping that inserts a large amount of data into a DB2, Sybase ASE, Oracle, or Microsoft SQL Server database.
Without writing to the database log, the target database cannot perform rollback. As a result, you may not be able to perform recovery. When you use bulk loading, weigh the importance of improved mapping performance against the ability to recover an incomplete mapping.