After an out of disk space on my virtual hard drive in VirtualBox, starting the schema browser in Toad for Oracle resulted in a Stream Read Error. Uninstalling and reinstalling Toad did not resolve the issue. What did help was resetting Toad for Oracle, which you can do as follows:
- Close Toad for Oracle.
- Go to ‘c:\users\[user name]\AppData\Roaming\Quest Software\Toad for Oracle’ and rename the existing Toad folder, in my case I renamed ‘11.0 freeware’ to ‘_old_11.6 freeware’.
- Start Toad for Oracle again.
You have to add your connections again, but as the corrupted user data is now gone, the error will also be fixed.