The Extents window in TOAD version 10.x could be found in the location Database| Diagnose | Extents.
But this function no longer exists in Toad 11.x
This windows has been combined with the Tablespace windows in the database menu.
To access the same information in Toad 11:
- Go to Database | Administer | Tablespace and select the Objects tab.
- Select Tablespace, and the extents information will be provided from the previous function "Extents" in v10.