Error: "Not enough storage is available" in ER Diagramer (26892)

Error: "Not enough storage is available" in ER Diagramer

Too many table dependencies.

Creating large ER Diagrams is out of the scope of the ER Diagram tool within Toad. For this use reverse engineer the database using Toad Data Modeler as follows

How to reverse engineer a database using Toad Data Modeler:
1. Launch Toad Data Modeler
2. Go to File | Reverse Engineering | Universal Reverse Engineering
3. On the Execute Script option, select your database and modify connection settings if needed
4. Input your User Name and Password in their respective fields then click connect
5. Check required tables you want to include in ERD then click on Execute
6. Close dialogue window