could not install oracle developer suite 10g 9.0.4.0.1 on vista

– set the setup.exe file compatibility mode to windows XP (SP2)
– set privilege level to run this program as an administrator
– set virtual memory manually with initial size 2048MB and maximum size 4096MB

Toad for Oracle keep prompting “No root element found in xml”

To fix this problem, do this step
– Quit from Toad
– Delete or rename the file desktops.xml (probably corrupt), located by default in C:\Program Files\Quest Software\Toad for Oracle\User Files.
– Open Toad (any custom desktop setting will lose)