Enlighten

Minimum Database rights to access Enlighten for Oracle and CSS
To access Enlighten,the minimum database rights required for Oracle and CSS is Read/Write access 
Minimum Database rights to access Architecture Checker for Oracle and CSS
To access Architecture Checker, the minimum database rights required for Oracle and CSS is Read access 
Minimum Database rights to access Action Plan Optimizer for Oracle and CSS 
To access Action Plan Optimizer,the minimum database rights required for Oracle and CSS is Read/Write access. 
Enlighten documentation missing in 7.2 and 7.3 online portal
Starting 7.2 and 7.3, the online documentation has been withdrawn since the documentation has been the same starting 7.0 and there has been no change in the product. If you need the documentation, please refer to 7.1 or 7.0 Enlighten documentation which is in line with the 7.2 and 7.3 features. Also, you can refer to the enlighten.CHM which that is located at the root of the CAST install folder which has the same information as in the online portal. 
Can CAST create links from Cobol code to the Mainframe if the Cobol code is calling the mainframe through a gateway?
If you go through a gateway or API to call mainframe code from Cobol code, the links are not created automatically by the analyzer. To detect these links, you must do the customization through the parameterization of Cobol calls or through a Reference finder tool. If you are new to creating these customizations, you may want to contact CAST consulting to assist you. 

Code Viewer

In which versions of Enlighten is Impact Analysis feature present ?

This feature is not found in CAST versions 8.0 onwards.

 The functionality known in previous releases of CAST AIP as the Column Level Impact Analysis (CLIA) for participating Microsoft SQL Server or Sybase ASE databases is no longer available (and has not been since CAST AIP 7.2.x).

The functionality known in previous releases of CAST AIP as the Fine Grain Impact Analysis (FGIA) for participating Oracle schemas is no longer available (and has not been since CAST AIP 7.2.x).  Note that this feature has never been available in CAST Enlighten when hosting your CAST schemas on a CAST Storage Service.

More details of this can be found at  Enlighten Limitations