Online Documentation for Data Export for Oracle
Step 5 - Selecting fields to export
At this step you can select fields to export and reorder them, if necessary.
By default all table fields are exported. Look through the list of exported objects and mark/unmark the fields that should be / should not be exported: check the corresponding box in the Is Exported column.
You may also click the Check all link below to export all fields of the table, or the Uncheck all label to exclude all fields of the table from export. The Invert all link changes each fields Is Exported state to opposite. You can also change the order of exported fields by selecting them and clicking the Move Up or Move Down buttons or context menu items.
Hint: If more convenient, you can check the Export all fields of all tables box to select all fields of all specified tables and queries for export.
Don't show this step anymore
When you are done, press the Next button to proceed to the next step.