Online Documentation for Data Comparer for Oracle
Selecting schemas for refreshing
Before you proceed to the Setting tables and fields correspondence step of the wizard, you are offered to specify the schemas to be refreshed using the Select schemas for refreshing... dialog.
Hint: For your convenience the context menu is available in both the Source schemas and Target schemas lists. Using the context menu you can 
Check all, 
Uncheck all and 
Invert items selection in the lists.
Refresh all schemas and don't show this window in the future
Set this option to specify all of your Oracle schemas for refreshing and skip this dialog in the future sessions of the wizard.
Note: To activate/deactivate this dialog, use the Show select schemas window option in the General section of the Preferences dialog.
When you are done, press OK to proceed to Step 2 of the wizard.
