This attribute controls the commit frequency during insert operations when you cannot use an "INSERT AS SELECT" type statement.
You cannot use Insert as Select in the following cases:
The table has a LONG column.
If the Database Link to Source destination repository attribute is not set during the Copy to Destination step.
If the table processed has a user-defined type column, such as WF_EVENT_T, and the database version is Oracle 9i or lower during the Copy to Destination step.
The Generate Candidates and Copy to Staging steps use Insert as Select type statements except when the table contains a LONG column. Undo usage is minimal during these steps, because the Data Archive engine adds an APPEND hint to the insert statement. In this case, Oracle does a direct path data load above the table high water mark.